Power Seats

U0024-CAN B BUS (-) CIRCUIT OPEN





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
Continuously

- Set Condition:
The Memory Seat Module detects the (D54) CAN B Bus (-) circuit is open.





Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, record and erase MSM DTC's
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read active MSM DTC's.
Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.


2. (D54) CAN B BUS (-) CIRCUIT OPEN




Turn the ignition off.
Disconnect the Memory Seat Module C1 harness connector.
Measure the voltage between the (D54) CAN B Bus (-) circuit and ground.
Is there any voltage present?

Yes

- Inspect the wiring and connectors for damage or shorted circuits. If ok, replace the Memory Seat Module.
- Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1. Verification Tests

No

- Repair the (D54) CAN B Bus (-) circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Verification Tests