B2188

B2188-IGNITION START CONTROL CIRCUIT LOW





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
With the ignition in the Start position.

- Set Condition:
The TIPM detects a short to ground condition in the (F962) Fused Ignition Switch Output (Start) circuit.





Diagnostic Test

1. CHECK FOR ACTIVE DTC
With the scan tool, read the DTC's.
Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 10 seconds.
With the scan tool, read the 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. 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 TIPM FOR INTERNAL SHORT




Turn the ignition off.
Disconnect the TIPM C5 harness connector.
Turn the ignition on, wait 30 seconds.
With the scan tool, read TIPM DTCs.
Does the scan tool display this DTC as active?

Yes

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

No

- Go to 3

3. VEHICLE EQUIPPED WITH DIESEL OR GAS ENGINE
Which type of engine is the vehicle equipped with?

Gas

- Go to 4

Diesel

- Go to 5

4. (GAS) CHECK (F962) IGNITION SWITCH OUTPUT (START) CIRCUIT FOR A SHORT TO GROUND




Turn the ignition off.
Disconnect the PCM C1 harness connector.
Measure the resistance between ground and the (F962) Ignition Switch Output (Start) circuit.
Is the resistance below 10K ohms?

Yes

- Repair the (F962) Ignition Switch Output (Start) circuit for a short to ground.
- Perform BODY VERIFICATION TEST VER 1 Body Verification Test

No

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

5. (DIESEL) CHECK (F962) IGNITION SWITCH OUTPUT (START) CIRCUIT FOR A SHORT TO GROUND




Turn the ignition off.
Disconnect the ECM C1 harness connector.
Measure the resistance between ground and the (F962) Ignition Switch Output (Start) circuit.
Is the resistance below 10K ohms?

Yes

- Repair the (F962) Ignition Switch Output (Start) circuit for a short to ground.
- Perform BODY VERIFICATION TEST VER 1 Body Verification Test

No

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