Circuit/System Testing

B1335 00 or B1335 0B

1. Ignition ON, use a scan tool to clear the current and history diagnostic trouble code.
2. Determine which motor set this DTC by operating the motors listed below 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. Clear the diagnostic trouble codes.
4. Ignition OFF, disconnect the harness connector at the appropriate seat or lumbar motor for which the DTC set.
5. Ignition ON, operate the motor adjuster switch in both directions. DTC B1335 00 or B1335 0B should not set.
   • If the DTC sets, test for a short between the appropriate motor control circuits listed below. If the circuits test normal, replace the MSM.
   • Front vertical motor terminal 1 and terminal 2
   • Rear vertical motor terminal 1 and terminal 2
   • Seat horizontal motor terminal 1 and terminal 2
   • Seat recline motor terminal 1 and terminal 2
   • Lumbar horizontal motor terminal 1 and terminal 5
6. Test the appropriate control circuits listed below for a high resistance. If the circuits test normal, test or replace the seat or lumbar motor.
   • Front vertical motor terminal 1 and terminal 2
   • Rear vertical motor terminal 1 and terminal 2
   • Seat horizontal motor terminal 1 and terminal 2
   • Seat recline motor terminal 1 and terminal 2
   • Lumbar horizontal motor terminal 1 and terminal 5

DTC B1335 42 or B1335 4B 

Verify that DTC B1335 42 or B1335 4B is not set.

• If either DTC is set, replace the MSM.