B1553

DTC B1553: CAN Communication Circuit Malfunction

DTC Detecting Condition and Trouble Area






DTC Troubleshooting



1.
Was "Air Conditioning System Check" performed?
YES
Go to Step 2.
NO
Go to Air Conditioning System Check:Auto A/C.

2. DTC check

Connect scan tool to DLC with ignition switch turned OFF.
Check DTC in BCM.

Is DTC U0073 (No.0073), U0100 (No.0100) and/or U0155 (No.0155) detected?
YES
Go to applicable DTC diag. flow.
NO
Substitute a known-good HVAC control module and a known-good BCM individually and recheck.