B1340 0B
WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, use a scan tool to clear the current and history diagnostic trouble code.
- 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 lumbar vertical motor
- Passenger seat lumbar vertical motor
- Steering column tilt actuator
- Steering column telescope actuator
- Clear the diagnostic trouble codes.
- Ignition OFF, disconnect the harness connector at the appropriate lumbar motor or steering column motor for which the DTC set.
- Ignition ON, operate the motor adjuster switch in both directions. DTC B1340 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.
- Driver seat lumbar vertical motor terminal A and terminal B
- Passenger seat lumbar vertical motor terminal A X354 and terminal B X354
- Steering column tilt actuator terminal A X1 and terminal B X1
- Steering column telescope actuator terminal A X1 and terminal B X1
- If greater than the specified value, test the control circuit for a short to voltage.
- If the DTC sets, test for a short between the appropriate motor control circuits listed below. If the circuits test normal, replace the MSM.
- Test the appropriate control circuits listed below for a high resistance.
- Driver seat lumbar vertical motor terminal A and terminal B
- Passenger seat lumbar vertical motor terminal A X354 and terminal B X354
- Steering column tilt actuator terminal A X1 and terminal B X1
- Steering column telescope actuator terminal A X1 and terminal B X1
- If the circuits test normal, test or replace the appropriate lumbar motor or steering column motor.