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. Operate the Left Rear Heated Seat Switch in both positions several times.
4. With the scan tool, read the DMRL 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 .
DISCONNECT THE LEFT REAR HEATED SEAT SWITCH
1. Turn the ignition off.
2. Disconnect the Left Rear Heated Seat Switch harness connector.
3. With the scan tool erase the DTCs.
4. Turn the ignition switch off then back on.
5. With the scan tool, read the DTCs.
  Does the DTC return?
  
  Yes
  - Go To 3
  No
  - Replace the Left Rear Heated Seat Switch in accordance with the Service Information. Refer to SWITCH, HEATED SEAT, REMOVAL AND INSTALLATION .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
DISCONNECT THE LEFT REAR DOOR MODULE C5 HARNESS CONNECTOR AND CHECK FOR VOLTAGE
1. Turn the ignition off.
2. Disconnect the Left Rear Door Module C5 harness connector.
3. Turn the ignition on.
4. Measure the voltage between ground and the (P181) Left Rear Heated Seat Low Indicator Driver circuit at the Left Rear Door Module C5 harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (P181) Left Rear Heated Seat Low Indicator Driver circuit for a short to battery.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go to 4.
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all Left Rear Door Module 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 Left Rear Door Module 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 DMRL DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Left Rear Door Module in accordance with the Service Information. Refer to REAR
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  - Test complete.