ABS Lamp On DTC C0820 - keywords brake DTC EBCM EBTCM indicator light MIL
| Subject: | ABS Lamp On DTC C0820 |
| Models: | 2004-2007 Cadillac XLR |
| 2005-2007 Chevrolet Corvette |
This PI was updated to include 2007 model year vehicles. Please discard PIC3430A.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may experience a ABS lamp on with a DTC C0820 set in the Electronic Brake Control Module. This may be due to a loose ground in the engine compartment.
Recommendation/Instructions:
Inspect and secure G104 and/or G106. These two grounds are not for the EBCM, but if left loose, can back feed and cause this DTC to set. Before suspecting the EBCM for this concern, verify grounds G104 and/or G106 are secured with no excessive voltage drop
Note: The other end of G104 and G106, are formed into the negative battery cable end. Gently pull on these cables to be sure they are secured and not loose in the battery cable end.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
