Circuit/System Testing
- Ignition ON, use a scan tool clear the current and history DTC.
- Determine which motor set the 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 horizontal lumbar motor
- Driver seat vertical lumbar motor
- Driver seat recline motor
- Steering column telescope motor
- Steering column tilt motor
- Clear the diagnostic trouble code.
- Ignition OFF, disconnect the harness connector at the appropriate seat, lumbar, or steering column motor listed below for which the DTC set.
- Seat adjuster assembly X1
- Seat recline motor X1
- Lumbar horizontal motor X1
- Lumbar vertical motor X2
- Steering column telescope motor X1
- Steering column tilt motor X1
- Ignition ON, operate the motor adjuster switch in both directions. DTC B1335 0B should not set.
- If the DTC sets, test for a short to ground or a short between the appropriate control circuits listed below: If the circuits test normal, replace the MSM.
- Front vertical motor terminal 2 and terminal 5
- Rear vertical motor terminal 1 and terminal 4
- Seat horizontal motor terminal 3 and terminal 6
- Seat recline motor terminal A and terminal B
- Lumbar vertical motor terminal A and terminal B
- Lumbar horizontal motor terminal A and terminal B
- Steering column telescope motor terminal A and terminal B
- Steering column tilt motor terminal A and terminal B
- If all circuits test normal, test or replace the appropriate seat, lumbar or steering column motor assembly.