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Power Liftgate System Inhibit Monitors

The following is a list of inhibit monitors that may be observed using an appropriate diagnostic scan tool.

INHIBIT MONITOR POSSIBLE CAUSES CORRECTION
$80 OPEN INHIBIT - VOLTAGE TOO LOW 1. Low or dead battery. 1. Test and charge battery. Replace if required.
$82 CLOSE INHIBIT - VOLTAGE TOO LOW 2. Ineffective power or ground circuits to the Power LiftGate Module (PLGM). 2. Check the power and ground circuits for the PLGM. Repair if required.
3. Inaccurate voltage reading from the PLGM. 3. Compare the PLGM battery reading using a diagnostic scan tool with a voltmeter reading at the PLGM wiring connections. If a voltage difference of 0.5 Volt or greater is obtained, replace the PLGM.
$81 OPEN INHIBIT - VOLTAGE TOO HIGH 1. Charging system over voltage. 1. Test the charging system. Repair if required.
$83 CLOSE INHIBIT - VOLTAGE TOO HIGH 2. Inaccurate voltage reading from the PLGM. 2. Compare the PLGM battery reading using a diagnostic scan tool with a voltmeter reading at the PLGM wiring connections. If a voltage difference of 0.5 Volt or greater is obtained, replace the PLGM.
$84 OPEN INHIBIT - TEMPERATURE TOO LOW 1. Temperature was below -30° C (-22° F) when the operation was attempted. 1. Inform customer of power liftgate system temperature operating range.
$86 CLOSE INHIBIT - TEMPERATURE TOO LOW 2. Open or high resistance to right pinch sensor thermistor through signal or ground circuit. 2. Check the signal and ground circuits between the pinch sensor and the PLGM including the in-line connectors. Repair if required.
3. Ineffective right pinch sensor or thermistor. 3. Allow vehicle to sit in a constant temperature environment for one hour with the liftgate open. Test the resistance of the right pinch sensor and thermistor compared to specification. Replace if required.
4. Inaccurate temperature reading from the PLGM. 4. Allow vehicle to sit in a constant temperature environment for one hour with the liftgate open. Compare the PLGM temperature reading using a diagnostic scan tool with the temperature indicated by the resistance specification of the right pinch sensor and thermistor. If the right pinch sensor and thermistor are within range of specification and the temperature difference at the PLGM is greater than 4.5° C (8° F), replace the PLGM.
$85 OPEN INHIBIT - TEMPERATURE TOO HIGH 1. Temperature was above 65° C (149° F) when the operation was attempted. 1. Inform customer of power liftgate system temperature operating range.
$87 CLOSE INHIBIT - TEMPERATURE TOO HIGH 2. Shorted or partially shorted right pinch sensor thermistor through signal or ground circuit. 2. Check the signal and ground circuits between the pinch sensor and the PLGM including the in-line connectors. Repair if required.
3. Ineffective right pinch sensor or thermistor. 3. Allow vehicle to sit in a constant temperature environment for one hour with the liftgate open. Test the resistance of the right pinch sensor and thermistor compared to specification. Replace if required.
4. Inaccurate temperature reading from the PLGM. 4. Allow vehicle to sit in a constant temperature environment for one hour with the liftgate open. Compare the PLGM temperature reading using a diagnostic scan tool with the temperature indicated by the resistance specification of the right pinch sensor and thermistor. If the right pinch sensor and thermistor are within range of specification and the temperature difference at the PLGM is greater than 4.5° C (8° F), replace the PLGM.
$88 CLOSE INHIBIT - LEFT PINCH SENSOR ACTIVE 1. Left pinch sensor was activated prior to activation of power close cycle. 1. Check for obstructions causing pinch sensor activation. Repair if required. If no obstructions found, inform customer of pinch sensor operation.
2. Short to ground on left pinch sensor signal circuit. 2. Check the signal circuit between the pinch sensor and the PLGM including the in-line connectors. Repair if required.
3. Ineffective left pinch sensor. 3. Test the resistance of the left pinch sensor in an unpinched state. If the resistance is less than 9 kilohms, replace the left pinch sensor.
4. Ineffective PLGM. 4. Use a diagnostic scan tool to observe the voltage of the left pinch sensor input. With the sensor disconnected the reading should be approximately 5 volts. Short the pinch sensor circuit to ground and the reading should be approximately 0 volts. If the readings are not okay, replace the PLGM.
$89 CLOSE INHIBIT - RIGHT PINCH SENSOR ACTIVE 1. Right pinch sensor was activated prior to activation of power close cycle. 1. Check for obstructions causing pinch sensor activation. Repair if required. If no obstructions found, inform customer of pinch sensor operation.
2. Short to ground on right pinch sensor signal circuit. 2. Check the signal circuit between the pinch sensor and the PLGM including the in-line connectors. Repair if required.
3. Ineffective right pinch sensor. 3. Test the resistance of the right pinch sensor in an unpinched state. If the resistance is less than 9 kilohms, replace the right pinch sensor.
4. Ineffective PLGM. 4. Use a diagnostic scan tool to observe the voltage of the right pinch sensor input. With the sensor disconnected the reading should be approximately 5 volts. Short the pinch sensor circuit to ground and the reading should be approximately 0 volts. If the readings are not okay, replace the PLGM.
$8A OPEN INHIBIT - NOT IN PARK OR NEUTRAL 1. Operator attempted power open cycle when vehicle was not in Park or Neutral. 1. Inform customer of power liftgate system operating restrictions.
2. Operator attempted manual latch release with exterior handle when vehicle was not in Park or Neutral. 2. Inform customer of power liftgate system operating restrictions.
3. Ignition switch status problem. 3. Use a diagnostic scan tool to observe the electronic message inputs received by the PLGM over the CAN data bus. Verify the ignition switch status reads correctly. Repair if required.
4. Transmission Range Sensor (TRS) problem. 4. Use a diagnostic scan tool to observe the electronic message inputs received by the PLGM over the CAN data bus. Verify PRNDL status reads correctly. If not okay, repair or replace the TRS if required.
5. Overhead console power liftgate switch problem. 5. Use a diagnostic scan tool to observe the overhead console liftgate switch inputs to the PLGM. Verify the inputs are correct under different voltage and driving conditions. If not okay, repair or replace the switch if required.
6. FOB with Integrated Key (FOBIK) or Keyless Ignition Node (KIN) problem. 6. Verify proper operation of the FOBIK and the Remote Keyless Entry (RKE) system. Repair or replace if required.
7. Exterior liftgate latch handle switch problem. 7. Use a diagnostic scan tool to observe the exterior liftgate latch handle switch inputs to the PLGM. Verify the inputs are correct under different voltage and driving conditions. If not okay, repair or replace the switch if required.
$8B CLOSE INHIBIT - NOT IN PARK OR NEUTRAL 1. Operator attempted power close cycle when vehicle was not in Park or Neutral. 1. Inform customer of power liftgate system operating restrictions.
2. Ignition switch status problem. 2. Use a diagnostic scan tool to observe the electronic message inputs received by the PLGM over the CAN data bus. Verify the ignition switch status reads correctly. Repair if required.
3. TRS problem. 3. Use a diagnostic scan tool to observe the electronic message inputs received by the PLGM over the CAN data bus. Verify PRNDL status reads correctly. If not okay, repair or replace the TRS if required.
4. Overhead console power liftgate switch problem. 4. Use a diagnostic scan tool to observe the overhead console liftgate switch inputs to the PLGM. Verify the inputs are correct under different voltage and driving conditions. If not okay, repair or replace the switch if required.
5. FOBIK or KIN problem. 5. Verify proper operation of the FOBIK and the RKE system. Repair or replace if required.
$8C OPEN INHIBIT - NON-ZERO VEHICLE SPEED 1. Operator attempted power open cycle when vehicle is in Neutral and rolling. 1. Inform customer of power liftgate system operating restrictions.
2. Ignition switch status problem. 2. Use a diagnostic scan tool to observe the electronic message inputs received by the PLGM over the CAN data bus. Verify the ignition switch status reads correctly. Repair if required.
3. Vehicle Speed Sensor (VSS) problem. 3. Use a diagnostic scan tool to observe the electronic message inputs received by the PLGM over the CAN data bus. Verify the vehicle speed status reads correctly. If not okay, repair or replace the VSS if required.
4. Overhead console power liftgate switch problem. 4. Use a diagnostic scan tool to observe the overhead console liftgate switch inputs to the PLGM. Verify the inputs are correct under different voltage and driving conditions. If not okay, repair or replace the switch if required.
5. FOBIK or KIN problem. 5. Verify proper operation of the FOBIK and the RKE system. Repair or replace if required.
6. Exterior liftgate latch handle switch problem. 6. Use a diagnostic scan tool to observe the exterior liftgate latch handle switch inputs to the PLGM. Verify the inputs are correct under different voltage and driving conditions. If not okay, repair or replace the switch if required.
$8D CLOSE INHIBIT - NON-ZERO VEHICLE SPEED 1. Operator attempted power close cycle when vehicle is in Neutral and rolling. 1. Inform customer of power liftgate system operating restrictions.
2. Ignition switch status problem. 2. Use a diagnostic scan tool to observe the electronic message inputs received by the PLGM over the CAN data bus. Verify the ignition switch status reads correctly. Repair if required.
3. VSS problem. 3. Use a diagnostic scan tool to observe the electronic message inputs received by the PLGM over the CAN data bus. Verify the vehicle speed status reads correctly. If not okay, repair or replace the VSS if required.
4. Overhead console power liftgate switch problem. 4. Use a diagnostic scan tool to observe the overhead console liftgate switch inputs to the PLGM. Verify the inputs are correct under different voltage and driving conditions. If not okay, repair or replace the switch if required.
5. FOBIK or KIN problem. 5. Verify proper operation of the FOBIK and the RKE system. Repair or replace if required.
$8E OPEN INHIBIT - IGNITION IN START POSITION 1. Operator attempted power open cycle with the ignition switch in the Start position. 1. Inform customer of power liftgate system operating restrictions.
2. Ignition switch status problem. 2. Use a diagnostic scan tool to observe the electronic message inputs received by the PLGM over the CAN data bus. Verify the ignition switch status reads correctly. Repair if required.
3. Overhead console power liftgate switch problem. 3. Use a diagnostic scan tool to observe the overhead console liftgate switch inputs to the PLGM. Verify the inputs are correct under different voltage and driving conditions. If not okay, repair or replace the switch if required.
4. FOBIK or KIN problem. 4. Verify proper operation of the FOBIK and the RKE system. Repair or replace if required.
$8F CLOSE INHIBIT - IGNITION IN START POSITION 1. Operator attempted power close cycle with the ignition switch in the Start position. 1. Inform customer of power liftgate system operating restrictions.
2. Ignition switch status problem. 2. Use a diagnostic scan tool to observe the electronic message inputs received by the PLGM over the CAN data bus. Verify the ignition switch status reads correctly. Repair if required.
3. Overhead console power liftgate switch problem. 3. Use a diagnostic scan tool to observe the overhead console liftgate switch inputs to the PLGM. Verify the inputs are correct under different voltage and driving conditions. If not okay, repair or replace the switch if required.
4. FOBIK or KIN problem. 4. Verify proper operation of the FOBIK and the RKE system. Repair or replace if required.
$90 OPEN INHIBIT - IN-PLANT MODE 1. Power open cycle will not function because the PLGM is in the in-plant mode. 1. Use a diagnostic scan tool to perform the PLGM learn cycle. If learn cycle does not correct the problem, replace the PLGM if required.
$91 CLOSE INHIBIT - IN-PLANT MODE 1. Power close cycle will not function because the PLGM is in the in-plant mode. 1. Use a diagnostic scan tool to perform the PLGM learn cycle. If learn cycle does not correct the problem, replace the PLGM if required.
$92 OPEN INHIBIT - GEAR/SPEED MISMATCH 1. Power open cycle will not function because of a conflict between the TRS and VSS inputs. 1. Use a diagnostic scan tool to observe the electronic message inputs to the PLGM over the CAN data bus. Verify the vehicle speed and the PRNDL status read correctly. If not okay, repair or replace the TRS or VSS if required. NOTE:  This inhibitor could also have been operator induced by placing the transmission in Park when the vehicle is still rolling and immediately attempting a power open cycle command.
2. Ignition switch status problem. 2. Use a diagnostic scan tool to observe the electronic message inputs received by the PLGM over the CAN data bus. Verify the ignition switch status reads correctly. Repair if required.
$93 CLOSE INHIBIT - GEAR/SPEED MISMATCH 1. Power close cycle will not function because of a conflict between the TRS and VSS inputs. 1. Use a diagnostic scan tool to observe the electronic message inputs to the PLGM over the CAN data bus. Verify the vehicle speed and the PRNDL status read correctly. If not okay, repair or replace the TRS or VSS if required. NOTE:  This inhibitor could also have been operator induced by placing the transmission in Park when the vehicle is still rolling and immediately attempting a power close cycle command.
2. Ignition switch status problem. 2. Use a diagnostic scan tool to observe the electronic message inputs received by the PLGM over the CAN data bus. Verify the ignition switch status reads correctly. Repair if required.
$94 OPEN INHIBIT - NOT FULLY OPEN OR FULLY CLOSED 1. Operator induced by placing the liftgate latch in the primary or secondary latch position while the liftgate was open. 1. Inform customer of proper power liftgate and latch operation.
2. Conflict between power liftgate latch switches and PDU full open switch inputs to the PLGM. 2. Use a diagnostic scan tool to observe the liftgate latch full open, primary, secondary, sector and pawl switch readings with the liftgate in the fully open position. Verify that the full open, primary, secondary and pawl switch readings are all Closed  and the sector switch reading is Open  . Then, with the liftgate in the fully closed position, verify that the full open, primary, secondary and pawl switch readings are all Open  and the sector switch reading is Closed  . Repair if required.
3. PDU full open switch problem. 3. Use a diagnostic scan tool to verify proper operation of the full open switch during a power liftgate cycle. Repeat during a manual liftgate cycle. In each case the switch reading should be Closed  with the liftgate a few degrees below fully opened and Open  in all other positions. Repair if required.
$95 LATCH RELEASE INHIBIT - LOCK ENGAGED 1. Vehicle was locked when the operator attempted to release the power liftgate latch using the exterior latch handle. 1. Inform customer of proper power liftgate and latch operation.
2. Invalid lock status received by the PLGM. 2. Use a diagnostic scan tool to observe the electronic message inputs to the PLGM over the CAN data bus. Cycle the power door locks using the FOBIK, the interior lock switches and the automatic (or rolling) lock feature. Verify that the lock status reads correctly. Repair if required.
$96 LATCH CINCH ABORTED - LEFT PINCH SENSOR ACTIVE 1. Left pinch sensor was activated when power liftgate latch was cinching. 1. Check for obstructions causing pinch sensor activation. Check the pinch sensor for areas that may be coming into contact with other parts of the vehicle. Ensure the pinch sensor is properly secured to the liftgate. Repair if required. If no obstructions found, inform customer of pinch sensor operation.
2. Short to ground on left pinch sensor signal circuit. 2. Check the signal circuit between the pinch sensor and the PLGM including the in-line connectors. Repair if required.
3. Ineffective left pinch sensor. 3. Test the resistance of the left pinch sensor in an unpinched state. If the resistance is less than 9 kilohms, replace the left pinch sensor.
4. Ineffective PLGM. 4. Use a diagnostic scan tool to observe the voltage of the left pinch sensor input. With the sensor disconnected the reading should be approximately 5 volts. Short the pinch sensor circuit to ground and the reading should be approximately 0 volts. If the readings are not okay, replace the PLGM.
$97 LATCH CINCH ABORTED - RIGHT PINCH SENSOR ACTIVE 1. Right pinch sensor was activated when power liftgate latch was cinching. 1. Check for obstructions causing pinch sensor activation. Check the pinch sensor for areas that may be coming into contact with other parts of the vehicle. Ensure the pinch sensor is properly secured to the liftgate. Repair if required. If no obstructions found, inform customer of pinch sensor operation.
2. Short to ground on right pinch sensor signal circuit. 2. Check the signal circuit between the pinch sensor and the PLGM including the in-line connectors. Repair if required.
3. Ineffective right pinch sensor. 3. Test the resistance of the right pinch sensor in an unpinched state. If the resistance is less than 9 kilohms, replace the right pinch sensor.
4. Ineffective PLGM. 4. Use a diagnostic scan tool to observe the voltage of the right pinch sensor input. With the sensor disconnected the reading should be approximately 5 volts. Short the pinch sensor circuit to ground and the reading should be approximately 0 volts. If the readings are not okay, replace the PLGM.
$98 OPEN CANCELLED - HANDLE ACTIVE 1. Operator induced by grabbing the exterior handle while a power open cycle was taking place. 1. Inform customer of power liftgate system operating restrictions.
2. Exterior liftgate latch handle switch problem. 2. Use a diagnostic scan tool to observe the exterior liftgate latch handle switch inputs to the PLGM. Verify the liftgate latch handle switch (located in the exterior latch handle assembly) reading is approximately 2.4 volts with handle activated and greater than 4.6 volts when released. Using a digital multimeter, measure the resistance of the liftgate latch handle switch. The multimeter should read approximately 4.7 kilohms activated, and open with the handle released. If not okay, repair or replace the switch if required.
$99 OPEN CANCELLED - RKE ACTIVE 1. A power open cycle was cancelled during the first two seconds (while chiming) by an RKE signal. 1. Inform customer of power liftgate system operating restrictions. FOBIK buttons may get inadvertently pressed when in a pocket or purse. Rapid pressing of the buttons may also be the cause.
2. FOBIK or KIN problem. 2. Verify proper operation of the FOBIK and the RKE system. Repair or replace if required.
$9A OPEN CANCELLED - OVERHEAD/IP ACTIVE 1. A power open cycle was cancelled during the first two seconds (while chiming) by an overhead console power liftgate switch signal. 1. Inform customer of power liftgate system operating restrictions. The overhead console power liftgate switch may have been double pressed.
2. Overhead console power liftgate switch problem. 2. Use a diagnostic scan tool to observe the overhead console liftgate switch inputs to the PLGM. Verify the inputs are correct under different voltage and driving conditions. If not okay, repair or replace the switch if required.
$9B CLOSE CANCELLED - HANDLE ACTIVE 1. Operator induced by grabbing the exterior handle while a power close cycle was taking place. 1. Inform customer of power liftgate system operating restrictions.
2. Exterior liftgate latch handle switch problem. 2. Use a diagnostic scan tool to observe the exterior liftgate latch handle switch inputs to the PLGM. Verify the liftgate latch handle switch (located in the exterior latch handle assembly) reading is approximately 2.4 volts with handle activated and greater than 4.6 volts when released. Using a digital multimeter, measure the resistance of the liftgate latch handle switch. The multimeter should read approximately 4.7 kilohms activated, and open with the handle released. If not okay, repair or replace the switch if required.
$9C CLOSE CANCELLED - RKE ACTIVE 1. A power close cycle was cancelled during the first two seconds (while chiming) by an RKE signal. 1. Inform customer of power liftgate system operating restrictions. FOBIK buttons may get inadvertently pressed when in a pocket or purse. Rapid pressing of the buttons may also be the cause.
2. FOBIK or KIN problem. 2. Verify proper operation of the FOBIK and the RKE system. Repair or replace if required.
$9D CLOSE CANCELLED - OVERHEAD/IP ACTIVE 1. A power close cycle was cancelled during the first two seconds (while chiming) by an overhead console power liftgate switch signal. 1. Inform customer of power liftgate system operating restrictions. The overhead console power liftgate switch may have been double pressed.
2. Overhead console power liftgate switch problem. 2. Use a diagnostic scan tool to observe the overhead console liftgate switch inputs to the PLGM. Verify the inputs are correct under different voltage and driving conditions. If not okay, repair or replace the switch if required.
$9E CLOSE CANCELLED - LEFT PINCH SENSOR DETECTED 1. A power close cycle was cancelled during the first two seconds (while chiming) by a left pinch sensor signal. 1. Check for obstructions causing pinch sensor activation. Check the pinch sensor for areas that may be coming into contact with other parts of the vehicle. Ensure the pinch sensor is properly secured to the liftgate. Repair if required. If no obstructions found, inform customer of pinch sensor operation.
2. Short to ground on left pinch sensor signal circuit. 2. Check the signal circuit between the pinch sensor and the PLGM including the in-line connectors. Repair if required.
3. Ineffective left pinch sensor. 3. Test the resistance of the left pinch sensor in an unpinched state. If the resistance is less than 9 kilohms, replace the left pinch sensor.
4. Ineffective PLGM. 4. Use a diagnostic scan tool to observe the voltage of the left pinch sensor input. With the sensor disconnected the reading should be approximately 5 volts. Short the pinch sensor circuit to ground and the reading should be approximately 0 volts. If the readings are not okay, replace the PLGM.
$9F CLOSE CANCELLED - RIGHT PINCH SENSOR DETECTED 1. A power close cycle was cancelled during the first two seconds (while chiming) by a right pinch sensor signal. 1. Check for obstructions causing pinch sensor activation. Check the pinch sensor for areas that may be coming into contact with other parts of the vehicle. Ensure the pinch sensor is properly secured to the liftgate. Repair if required. If no obstructions found, inform customer of pinch sensor operation.
2. Short to ground on right pinch sensor signal circuit. 2. Check the signal circuit between the pinch sensor and the PLGM including the in-line connectors. Repair if required.
3. Ineffective right pinch sensor. 3. Test the resistance of the right pinch sensor in an unpinched state. If the resistance is less than 9 kilohms, replace the right pinch sensor.
4. Ineffective PLGM. 4. Use a diagnostic scan tool to observe the voltage of the right pinch sensor input. With the sensor disconnected the reading should be approximately 5 volts. Short the pinch sensor circuit to ground and the reading should be approximately 0 volts. If the readings are not okay, replace the PLGM.
$A0 OPEN REVERSAL - GEAR OR SPEED STATE CHANGE 1. Operator shifted vehicle out of Park or Neutral while a power open cycle was in progress. 1. Inform customer of power liftgate system operating restrictions.
2. VSS problem. 2. Use a diagnostic scan tool to observe the electronic message inputs received by the PLGM over the CAN data bus. Verify the vehicle speed status reads correctly. If not okay, repair or replace the VSS if required.
3. TRS problem. 3. Use a diagnostic scan tool to observe the electronic message inputs received by the PLGM over the CAN data bus. Verify PRNDL status reads correctly. If not okay, repair or replace the TRS if required.
$A1 OPEN REVERSAL - USER INPUT 1. Operator activated either a FOBIK button or the overhead console power liftgate switch while a power open or power close cycle was in progress 1. Inform customer of power liftgate system operating restrictions. The overhead console power liftgate switch may have been double pressed or the FOBIK buttons may get inadvertently pressed when in a pocket or purse. Rapid pressing of the buttons may also be the cause.
2. Overhead console power liftgate switch problem. 2. Use a diagnostic scan tool to observe the overhead console liftgate switch inputs to the PLGM. Verify the inputs are correct under different voltage and driving conditions. If not okay, repair or replace the switch if required.
3. FOBIK or KIN problem. 3. Verify proper operation of the FOBIK and the RKE system. Repair or replace if required.
$A2 CLOSE REVERSAL - USER INPUT 1. Operator activated either a FOBIK button or the overhead console power liftgate switch while a power open or power close cycle was in progress. 1. Inform customer of power liftgate system operating restrictions. The overhead console power liftgate switch may have been double pressed or the FOBIK buttons may get inadvertently pressed when in a pocket or purse. Rapid pressing of the buttons may also be the cause.
2. Overhead console power liftgate switch problem. 2. Use a diagnostic scan tool to observe the overhead console liftgate switch inputs to the PLGM. Verify the inputs are correct under different voltage and driving conditions. If not okay, repair or replace the switch if required.
3. FOBIK or KIN problem. 3. Verify proper operation of the FOBIK and the RKE system. Repair or replace if required.
$A3 CLOSE REVERSAL - LEFT PINCH SENSOR DETECTED 1. A power close cycle reversed direction due to a left pinch sensor signal. 1. Check for obstructions causing pinch sensor activation. Check the pinch sensor for areas that may be coming into contact with other parts of the vehicle. Ensure the pinch sensor is properly secured to the liftgate. Repair if required. If no obstructions found, inform customer of pinch sensor operation.
2. Short to ground on left pinch sensor signal circuit. 2. Check the signal circuit between the pinch sensor and the PLGM including the in-line connectors. Repair if required.
3. Ineffective left pinch sensor. 3. Test the resistance of the left pinch sensor in an unpinched state. If the resistance is less than 9 kilohms, replace the left pinch sensor.
4. Ineffective PLGM. 4. Use a diagnostic scan tool to observe the voltage of the left pinch sensor input. With the sensor disconnected the reading should be approximately 5 volts. Short the pinch sensor circuit to ground and the reading should be approximately 0 volts. If the readings are not okay, replace the PLGM.
$A4 CLOSE REVERSAL - RIGHT PINCH SENSOR DETECTED 1. A power close cycle reversed direction due to a right pinch sensor signal. 1. Check for obstructions causing pinch sensor activation. Check the pinch sensor for areas that may be coming into contact with other parts of the vehicle. Ensure the pinch sensor is properly secured to the liftgate. Repair if required. If no obstructions found, inform customer of pinch sensor operation.
2. Short to ground on right pinch sensor signal circuit. 2. Check the signal circuit between the pinch sensor and the PLGM including the in-line connectors. Repair if required.
3. Ineffective right pinch sensor. 3. Test the resistance of the right pinch sensor in an unpinched state. If the resistance is less than 9 kilohms, replace the right pinch sensor.
4. Ineffective PLGM. 4. Use a diagnostic scan tool to observe the voltage of the right pinch sensor input. With the sensor disconnected the reading should be approximately 5 volts. Short the pinch sensor circuit to ground and the reading should be approximately 0 volts. If the readings are not okay, replace the PLGM.
$A5 CLOSE REVERSAL - HANDLE ACTIVE 1. A power close cycle reversed direction due to the operator grabbing the exterior handle while the cycle was taking place. 1. Inform customer of power liftgate system operating restrictions.
2. Exterior liftgate latch handle switch problem. 2. Use a diagnostic scan tool to observe the exterior liftgate latch handle switch inputs to the PLGM. Verify the liftgate latch handle switch (located in the exterior latch handle assembly) reading is approximately 2.4 volts with handle activated and greater than 4.6 volts when released. Using a digital multimeter, measure the resistance of the liftgate latch handle switch. The multimeter should read approximately 4.7 kilohms activated, and open with the handle released. If not okay, repair or replace the switch if required.
$A6 OPEN ABORTED - HANDLE ACTIVE 1. A power open cycle was aborted due to the operator grabbing the exterior handle while the cycle was taking place. 1. Inform customer of power liftgate system operating restrictions.
2. Exterior liftgate latch handle switch problem. 2. Use a diagnostic scan tool to observe the exterior liftgate latch handle switch inputs to the PLGM. Verify the liftgate latch handle switch (located in the exterior latch handle assembly) reading is approximately 2.4 volts with handle activated and greater than 4.6 volts when released. Using a digital multimeter, measure the resistance of the liftgate latch handle switch. The multimeter should read approximately 4.7 kilohms activated, and open with the handle released. If not okay, repair or replace the switch if required.
$A7 OPEN OBSTACLE 1. A power open cycle reversed direction due to an obstacle detected while the cycle was taking place. 1. Normal operation. Inform customer of power liftgate system operating restrictions.
2. Binding or sticking of components. 2. Use a diagnostic scan tool to determine the Gate Position indicated in the Inhibit Monitor record. Move the liftgate manually to that location and note the components involved in the obstruction or binding. Repair or replace the components if required.
3. The PLGM is not properly calibrated. 3. Use a diagnostic scan tool to perform the PLGM learn cycle. If learn cycle does not correct the problem, replace the PLGM if required.
$A8 CLOSE OBSTACLE 1. A power close cycle reversed direction due to an obstacle detected while the cycle was taking place. 1. Normal operation. Inform customer of power liftgate system operating restrictions.
2. Binding or sticking of components. 2. Use a diagnostic scan tool to determine the Gate Position indicated in the Inhibit Monitor record. Move the liftgate manually to that location and note the components involved in the obstruction or binding. Repair or replace the components if required.
3. The PLGM is not properly calibrated. 3. Use a diagnostic scan tool to perform the PLGM learn cycle. If learn cycle does not correct the problem, replace the PLGM if required.
$AA LATCH IS NOT NEAR SECONDARY STATE 1. Operator induced by placing the liftgate latch in the primary or secondary latch position while the liftgate was open. 1. Inform customer of proper power liftgate and latch operation.
2. Wiring problem. Use a diagnostic scan tool to observe and verify that the position sensor 1 and 2 in the PDU toggle between Open  and Closed  . If readings are inaccurate, diagnose the wiring for possible opens or shorts to ground or voltage. Refer to the appropriate wiring information. Repair if required.
3. PDU position sensor problem. 3. Manually open the liftgate to the fully open position. Bring the liftgate down to just before the latch contacts the striker. Using a diagnostic scan tool observe the Gate Position counts. If the count is greater than 20, replace the ineffective PDU.
4. PLGM problem. Use a diagnostic scan tool to observe the position sensor 1 and 2 status. Disconnect the PDU electrical connector. Apply opens and grounds to the position sensor signal circuits. Verify that the PLGM reads the correct Open  and Closed  status. If not okay, replace the PLGM if required.
$AB OPEN INHIBIT - VTA ARMED 1. The overhead console power liftgate switch would not initiate a power open cycle because the Vehicle Theft Alarm (VTA) was armed. 1. Normal operation. Inform customer of power liftgate system operating restrictions.
2. Invalid VTA status. 2. Use a diagnostic scan tool to observe and verify that electronic messages from the instrument cluster (also known as the Cab Compartment Node/CCN) over the CAN data bus indicate proper operation of the VTA system. If not okay, repair or replace components if required.
$AC OPEN INHIBIT - INVALID INPUT 1. The power liftgate D-pillar switch would not initiate a power open cycle because a power open is not allowed from that input. 1. Normal operation. Inform customer of power liftgate system operating restrictions.
$AD OPEN INHIBIT - FLIPPER GLASS AJAR 1. Operator attempted a power open cycle while the liftgate flip-up glass was ajar. 1. Normal operation. Inform customer of power liftgate system operating restrictions.
2. Liftgate flip-up glass ajar switch problem. 2. Use a diagnostic scan tool to observe and verify that electronic messages from the Body Control Module (BCM) over the CAN data bus indicate the proper status of the liftgate flip-up glass. If not okay, repair or replace flip-up glass ajar switch if required.
$AE CLOSE INHIBIT - FLIPPER GLASS AJAR 1. Operator attempted a power close cycle while the liftgate flip-up glass was ajar. 1. Normal operation. Inform customer of power liftgate system operating restrictions.
2. Liftgate flip-up glass ajar switch problem. 2. Use a diagnostic scan tool to observe and verify that electronic messages from the Body Control Module (BCM) over the CAN data bus indicate the proper status of the liftgate flip-up glass. If not okay, repair or replace flip-up glass ajar switch if required.
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