Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read Comfort Seat Wheel Module (CSWM) DTCs and record on the repair order.
2. With the scan tool, erase CSWM DTCs.
3. Turn the ignition off for ten seconds, then start the engine.
4. With the scan tool, read CSWM DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE BCM FOR DTCS
1. With the scan tool, read Body Control Module (BCM) DTCs and record on the repair order.
  Are there any BCM DTCs set?
  
  Yes
  - Repair the DTC(s) in the BCM. Refer to DIAGNOSIS AND TESTING .
  No
  - Go To 2
CHECK THE POWER SEAT RELAY OUTPUT CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the CSWM 24 pin connector.
3. Remove the Power Seat Relay from the rear PDC.
4. Measure the resistance of the Power Seat Relay Output circuit between the CSWM C connector and the Power Seat Relay connector.
  Is the resistance above 2.0 Ohms?
  
  Yes
  - Repair the Power Seat Relay Output Circuit for an open or high resistance.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
CHECK THE POWER SEAT RELAY SUPPLY CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
1. Turn the ignition on.
2. Using a 12 volt test light connected to ground, check the Power Seat Relay Supply Circuit in the Power Seat Relay connector.
  NOTE:
  The test light should illuminate brightly. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly?
  
  Yes
  - Go To 5
  No
  - Repair the Power Seat Relay Supply Circuit for an open or high resistance.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE POWER SEAT RELAY CONTROL CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
1. Using a 12 volt test light connected to ground, check the Power Seat Relay Control Circuit in the Power Seat Relay connector.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 6
  No
  - Repair the Power Seat Relay Control Circuit for an open or high resistance.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE POWER SEAT RELAY GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
1. Using a 12 volt test light connected to 12 volts, check the Power Seat Relay Ground Circuit in the Power Seat Relay connector.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 7
  No
  - Repair the Power Seat Relay Ground Circuit for an open or high resistance.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK DTCS WITH THE POWER SEAT RELAY REMOVED AND A JUMPER WIRE INSTALLED
1. Turn the ignition off.
2. Connect a jumper wire between the Power Seat Relay Ground Circuit and the Power Seat Relay Output Circuit.
3. Turn the ignition on.
4. With the scan tool, erase CSWM DTCs.
5. Turn the ignition off for ten seconds, then start the engine.
6. With the scan tool, read CSWM DTCs.
  Did DTC B101B-13-POWER SEAT RELAY - CIRCUIT OPEN return?
  
  Yes
  - Go To 8
  No
  - Replace the Power Seat Relay.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK RELATED WIRING AND HARNESS CONNECTIONS
1. Turn the ignition off.
2. Check the related component and module power supply and ground circuits.
3. Disconnect the CSWM harness connector(s).
4. Disconnect all related in-line harness connections (if equipped).
5. Disconnect the related component harness connectors.
6. 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.
7. Reconnect all harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
8. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
9. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
10. With the scan tool, erase DTCs.
11. Using the recorded information along with the When Monitored and Set Conditions, operate the vehicle within the conditions that set the DTC.
12. With the scan tool, read CSWM DTCs.
  Did the DTC return?
  
  Yes
  - Replace the CSWM in accordance with the Service Information. Refer to MODULE, COMFORT SEAT AND WHEEL (CSWM), REMOVAL AND INSTALLATION .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  - Test complete.