OPS Checksum Error (ATC)

OPS CHECKSUM ERROR (ATC)

For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
With the ignition on and IOD fuse installed after a battery disconnect.

- Set Condition:
If the calculated check sum does not match the stored value.





NOTE: This DTC must be active for the results of this test to be valid. Do not perform this test if this DTC is stored. Refer to HVAC System Test (ATC) for stored DTC test procedures.

Diagnostic Test

1. REPLACE THE A/C HEATER CONTROL


Repair

- Replace the A/C Heater Control.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.