U0023

U0023 - CAN B BUS (+) CIRCUIT HIGH





For a complete wiring diagram Refer to Diagrams/Electrical.

- When Monitored:

With the ignition switch on.

- Set Condition:

The Multi-Purpose Module (Police And Taxi Interface Module-PTIM) has detected the (W527) VSIM CAN B Bus (+) circuit is above a calibrated value.





Diagnostic Test

1.CHECK FOR ACTIVE DTC

With the scan tool, read the active DTCs.

Erase the DTCs.

Turn the ignition off, wait 10 seconds, then turn the ignition on.

With the scan tool, read the active DTC's.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals, and repair any obvious problems.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2.VSIM CAN B BUS CIRCUITS SHORTED TO VOLTAGE





Turn the ignition off.

Disconnect the Multi-Purpose Module (Police And Taxi Interface Module-PTIM) C2 harness connector.

Disconnect the scan tool from the DLC.

Turn the ignition on.

Measure the voltage of the VSIM CAN B Bus circuits.

Is the voltage above 6.0 volts for either circuit?

Yes

- Repair the VSIM CAN B Bus circuit(s) for a short to voltage.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Inspect the wiring and connectors for damage or shorted circuits. If ok, replace the Multi-Purpose Module (Police And Taxi Interface Module-PTIM).
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test