Instrument Cluster

B2122-IGNITION RUN CONTROL CIRCUIT LOW





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
Continuously

- Set Condition:
When the Cluster senses a low condition on the (F102) Ignition Run Relay Control circuit for over 10 seconds, this code will set.





Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION
With the scan tool, record and erase DTC's
Cycle the ignition from on to off.
Turn the ignition on.
With the scan tool, read DTC's.
Does the scan tool display: B2122-IGNITION RUN CONTROL CIRCUIT LOW?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2. IGNITION RUN RELAY
Turn the ignition off.
Install a substitute relay in place of the original Ignition Run Relay.
Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 30 seconds.
With the scan tool, read the DTC's.
Does the scan tool display this DTC as active?

Yes

- Go To 3

No

- Replace the original Ignition Run/ACC Delay Relay.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

3. JUNCTION BLOCK
NOTE: Perform this test with the relay removed.

Turn the ignition off.
Disconnect the Junction Block C2 connector (on top of junction block).
From the Relay cavity 85, measure for voltage.
Is voltage present?

Yes

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

No

- Go To 4
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

4. (F102) IGNITION RUN RELAY CONTROL CIRCUIT SHORT TO GROUND
Disconnect the Junction Block C2 connector (on top of junction block).
Disconnect the Cluster C2 harness connector.
Measure the resistance between ground and the (F102) Ignition Run Relay Control circuit in the Cluster C2 connector.
Is the resistance below 10K ohms?

Yes

- Repair the (F102) Ignition Run Relay Control circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

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