Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, create a Vehicle Scan Report and attach it to the repair order.
3. Erase the DTCs.
4. Turn the ignition off and then turn the ignition on.
5. With the scan tool, read the RFHM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE (P30) LIFTGATE HANDLE SWITCH SENSE CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the RFHM C2 harness connector.
3. Turn the ignition on.
  NOTE:
  To cycle the ignition on the Passive Entry Keyless Go (PEKG)/Keyless Ignition Node (KIN) system when the RFHM C2 connector is disconnected, use the rounded end of the FOBIK to press the Stop/Start button.
4. Measure the voltage between ground and the (P30) Liftgate Handle Switch Sense circuit.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (P30) Liftgate Handle Switch Sense circuit.
  No
  - Go To 3
CHECK THE (P39) LIFTGATE EXTERIOR HANDLE SWITCH RETURN CIRCUIT FOR A SHORT TO VOLTAGE
1. Be sure the ignition is still on.
2. Measure the voltage between ground and the (P39) Liftgate Exterior Handle Switch Return circuit at the RFHM Module C2 harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (P39) Liftgate Exterior Handle Switch Return circuit.
  No
  - Go To 4
CHECK THE (P30) LIFTGATE HANDLE SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the RFHM Module C2 harness connector.
3. Check for continuity between ground and the (P30) Liftgate Handle Switch Sense circuit at the RFHM Module C2 harness connector.
  Is there continuity between ground and the (P30) Liftgate Handle Switch Sense circuit?
  
  Yes
  - Repair the (P30) Liftgate Handle Switch Sense circuit for a short to ground.
  No
  - Go To 5
CHECK THE (P39) LIFTGATE EXTERIOR HANDLE SWITCH RETURN CIRCUIT FOR A SHORT TO GROUND
1. Check for continuity between ground and the (P39) Liftgate Exterior Handle Switch Return circuit at the RFHM Module C2 harness connector.
  Is there continuity between ground and the (P39) Liftgate Exterior Handle Switch Return circuit?
  
  Yes
  - Repair the (P39) Liftgate Exterior Handle Switch Return circuit for a short to ground.
  No
  - Go To 6
CHECK THE (P30) LIFTGATE HANDLE SWITCH SENSE CIRCUIT FOR AN OPEN
1. Measure the resistance of the (P30) Liftgate Handle Switch Sense circuit between the RFHM C2 connector and the Liftgate Handle Switch connector.
  Is the resistance below 2.0 Ohms?
  
  Yes
  - Go To 7
  No
  - Repair the open in the (P30) Liftgate Handle Switch Sense circuit.
CHECK THE (P39) LIFTGATE EXTERIOR HANDLE SWITCH RETURN CIRCUIT FOR AN OPEN
1. Measure the resistance of the (P39) Liftgate Exterior Handle Switch Return circuit between the RFHM C2 connector and the Liftgate Handle Switch connector.
  Is the resistance below 2.0 Ohms?
  
  Yes
  - Go To 8
  No
  - Repair the open in the (P39) Liftgate Exterior Handle Switch Return circuit.
CHECKING THE (P30) LIFTGATE HANDLE SWITCH SENSE CIRCUIT BEING SHORTED TO THE (P39) LIFTGATE EXTERIOR HANDLE SWITCH RETURN CIRCUIT
1. Check for continuity between the (P30) Liftgate Handle Switch Sense circuit and the (P39) Liftgate Exterior Handle Switch Return circuit at the RFHM C2 harness connector.
  Is there continuity between the (P30) Liftgate Handle Switch Sense circuit and the (P39) Liftgate Exterior Handle Switch Return circuit?
  
  Yes
  - Repair the (P30) Liftgate Handle Switch Sense circuit for a short to the (P39) Liftgate Exterior Handle Switch Return circuit.
  No
  - Go To 9
CHECKING THE LIFTGATE HANDLE
1. Replace the Liftgate Handle in accordance with Service Information. Refer to HANDLE, EXTERIOR, REMOVAL AND INSTALLATION .
2. Turn the ignition on.
3. Using the scan tool, record and erase the DTCs.
4. With the scan tool, select: Radio Frequency Hub Module (RFHM), More Options and System Tests.
5. Perform the Radio Frequency Hub Module (RFHM) LF Antenna Verification Tests.
6. With the scan tool, read the Active DTCs.
  Did the DTC return?
  
  Yes
  - Go To 10
  No
  - Test complete.
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all RFHM harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
5. Reconnect all RFHM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Using the recorded Vehicle Scan Report, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
10. With the scan tool, read RFHM DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Radio Frequency Hub Module (RFHM) in accordance with the Service Information. Refer to MODULE, RADIO FREQUENCY (RF HUB), REMOVAL AND INSTALLATION .
  - Perform the RADIO FREQUENCY HUB (RF-HUB) VERIFICATION TEST. Refer to RADIO FREQUENCY HUB (RF HUB) VERIFICATION TEST .
  No
  - Perform the RADIO FREQUENCY HUB (RF-HUB) VERIFICATION TEST. Refer to RADIO FREQUENCY HUB (RF HUB) VERIFICATION TEST .
  - Test complete.