C1078

C1078-TIRE REVOLUTIONS RANGE PERFORMANCE

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

- When Monitored:
With the ignition on.

- Set Condition:
The DTC will set if the stored tire size is out of range as received from the Body Control Module (BCM).





Diagnostic Test

1. DTC CONDITION IS PRESENT
1. Turn the ignition on.
2. Observe the ABS Warning Indicator.

Is the ABS Warning Indicator Flashing?

Yes

- Go To 2

No

- Go To 3

2. INCORRECT TIRES PROGRAMMED INTO BCM





1. Inspect all four tires on the vehicle and note the size of each tire.

NOTE: A non-production size tire cannot be programmed into the BCM. The production Powertrain, with the production size tires, is the only emissions certified configuration that is available for reprogramming.

2. Verify the correct Tire/wheel information is programmed in the BCM.

Is the correct value programmed in the BCM according to the chart?

Yes

- Test complete.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

No

- Program the correct Tire/Wheel information in the BCM.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

3. WIRING HARNESS INSPECTION
1. Turn the ignition off.
2. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
3. Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.
4. Perform any Hotline letters or Technical Service Bulletins that may apply.

Were any problems found?

Yes

- Repair as necessary.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time.