Circuit/System Testing

DTCs B1335 00 or B1335 0B

1. Use a scan tool to clear the current and history diagnostic trouble code.
2. Ignition ON, determine which motor set this DTC by operating the following motors one at a time in both directions. Check for the DTC to set between each motor test.
   • Driver seat front vertical motor
   • Driver seat rear vertical motor
   • Driver seat horizontal motor
   • Driver seat recline motor
   • Driver seat lumbar horizontal motor
3. Use a scan tool to clear the current and history diagnostic trouble code.
4. Ignition OFF, disconnect the harness connector at the seat or lumbar motor for which the DTC set.
5. Ignition ON, operate the motor in both directions then verify that the DTC set.
   • If the DTC did not set, test or replace the motor.
6. Ignition OFF, disconnect the appropriate (C1 or C4) harness connector at the memory seat module.
7. Ignition ON, test for 0 volt between each motor control circuit and ground.
   • If greater than 0 volt, test the control circuit for a short to voltage.
8. Test for infinite resistance between each control circuit and ground.
   • If less than infinite resistance, test the control circuit for a short to ground.
9. Test for infinite resistance between the motor control circuits:
   • If less than infinite resistance, test for a short between the control circuits.
10. If all circuits test normal, test or replace the memory seat module.

DTCs B1335 42 or B1335 4B 

If either DTC is set history or current, the only option is module replacement.