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DTC Troubleshooting

B1561: SYMPTOM TROUBLESHOOTING REFERENCE CHART

Step Action YES NO
1  Was "Air Conditioning System Check" performed?  Go to Step 2. Go to AIR CONDITIONING SYSTEM CHECK: AUTO A/C .
2  DTC check 
  1. Connect scan tool to DLC with ignition switch turned OFF.
  2. Check DTC in ECM.

Is DTC P0116, P0117 or P0118 detected? 		 Go to applicable DTC diag. flow. Substitute a known-good HVAC control module and a known-good BCM individually and recheck.
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