B212F

B212F-IGNITION RUN/ACC CONTROL CIRCUIT LOW

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

When the ignition is in the accessory or on position, the Totally Integrated Power Module (TIPM) energizes the Run/Accessory Relay. The TIPM internally grounds the coil for the Run/Accessory Relay.

- When Monitored:
With the ignition on.

Battery voltage greater than 10 volts.

With the Run/Accessory Relay commanded on.

- Set Condition:
The Totally Integrated Power Module (TIPM) detects a short to ground in the internal Run/Accessory Relay Control circuit.





1. CHECK FOR AN INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all DTCs.
3. Cycle the ignition from off to on.
4. With the scan tool, read DTCs.

Does the scan tool display DTC: B212F-IGNITION RUN/ACC CONTROL CIRCUIT LOW?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. RUN/ACCESSORY RELAY
1. Turn the ignition off.
2. Remove the Run/Accessory Relay and substitute it with a known good relay.
3. Turn the ignition on.
4. With the scan tool, clear all DTCs.
5. Turn the ignition off.
6. Turn the ignition on.
7. With the scan tool, read DTCs.

Does the scan tool display DTC: B212F-IGNITION RUN/ACC CONTROL CIRCUIT LOW?

Yes

- Go To 3

No

- Replace the Run/Accessory Relay.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. TOTALLY INTEGRATED POWER MODULE

NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

1. Using the schematics as a guide, inspect the wire harness and connectors.
2. Pay particular attention to all Power and Ground circuits.

Were any problems found?

Yes

- Repair as necessary.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the TIPM. Totally Integrated Power Module (TIPM) - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.