B2148

B2148-IGNITION RUN CONTROL 2 CIRCUIT LOW





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

- When Monitored:
With the ignition on.

- Set Condition:
Ignition Run Control 2 Circuit Low.





1. CHECK FOR ACTIVE DTC
1. Check all fuses. If any fuses are open, diagnose the appropriate circuit.
2. With the scan tool, read the DTCs.
3. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 10 seconds.
4. With the scan tool, read the DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- If the DTC is stored, check for an intermittent condition. Using the wiring diagram/schematic as a guide, visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.

2. CHECK THE (F937) CIRCUIT FOR AN INTERNAL SHORT TO GROUND
1. Remove Fuse 30.
2. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 10 seconds.
3. With the scan tool, read the DTCs.

Does the scan tool display this DTC as active?

Yes

- Replace the TIPM.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK THE HEATED SEATS MODULE FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the Heated Seats Module harness connector.
3. Reinstall Fuse 30.
4. Turn the ignition on, leaving the ignition on for a minimum of 10 seconds.
5. With the scan tool, read the DTCs.

Does the scan tool display this DTC as active?

Yes

- Repair the (F937) Fused Ignition Switch Output (Run) circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Heated Seats Module.
- Perform the BODY VERIFICATION TEST. Body Verification Test.