The Air conditioner Control Module sets DTC B16A4 when ECV voltage is over 3.5V for more than 0.3 sec. in non-operation ECV condition.(within 0.5 sec. after engine start.)
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Monitoring the Voltage | 1. Poor connection in wiring harness 2. Open in control circuit 3. Open in ground circuit 4. Faulty ECV 5. Faulty A/C control Module |
Enable Conditions |
•
IG KEY ON | |
Threshold value |
•
When ECV voltage is over 3.5V for more than 0.3 sec. in non-operation ECV condition.(within 0.5 sec. after engine start.) | |
Failsafe |
•
Stop of compressor operation |
