C1239

C1239-00-EMISSION ROLLS TEST ACTIVE

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

- When Monitored:
Continuously with the ignition on and the Totally Integrated Power Module (TIPM) has the Emissions Test Mode bit set.

- Set Condition:
If the Anti-lock Brake System (ABS) Module receives two messages in a row indicating that the Body Control Module (BCM) has been requested to activate the Emission Rolls Test.





1. VERIFY DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool record and erase the DTCs.
3. Turn the ignition off.
4. Turn the ignition on.
5. Using the scan tool, read the DTCs.

Is this DTC active?

Yes

- Go To 2

No

- Perform the ABS-INTERMITTENT CONDITION TEST. Testing and Inspection.

2. EMISSION ROLLS TEST ENABLED
1. Turn the ignition on.
2. Using the scan tool, under "Miscellaneous Functions" DISABLE the Emission Rolls Test in the BCM.
3. With the scan tool, erase the DTCs.
4. Turn the ignition off and wait ten seconds.
5. Turn the ignition on.
6. Using the scan tool, the read DTCs in ABS.

Is the DTC active at this time?

Yes

- Go To 3

No

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

3. ANTI-LOCK BRAKE SYSTEM (ABS) MODULE
1. Turn the ignition off.
2. Replace the Anti-Lock Brake System (ABS) Module. Anti-Lock Brake System Module - Removal.
3. Turn the ignition on.
4. Using the scan tool, read DTCs in the ABS.

Is the DTC still remain active?

Yes

- Replace the Body Control Module (BCM). Body Control Module - Removal.

No

- Test complete.