B127A

B127A-COMPASS PERFORMANCE





For a complete wiring diagram refer to Diagrams/Electrical.

- When Monitored:

With the ignition on.

- Set Condition:

Compass performance.





Diagnostic Test

1. CHECK FOR AN ACTIVE DTC

NOTE: Remove any electronic devices (laptop computers, cell phones) from the instrument panel.

NOTE: Before proceeding, check the compass variance and calibration.

Turn the ignition on.

With the scan tool, record and erase DTCs.

Wait 30 seconds.

With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2. (F921) FUSED RUN RELAY OUTPUT CIRCUIT OPEN





Measure the voltage of the (F921) Fused Run Relay Output circuit for an open.

Is the voltage above 10 volts?

Yes

- Go To 3

No

- Repair the (F921) Fused Run Relay Output circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

3. (Z916) GROUND CIRCUIT OPEN





Measure the resistance of the (Z916) Ground circuit for an open.

Is the resistance above 10K ohms?

Yes

- Repair the (Z916) Ground circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Replace the Compass Module.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test