The A/C Control Module receives the A/C Pressure Transducer (APT) Sensor input from the PCM through CAN lines. If the pressure reading is low the A/C Control Unit will shut off the A/C Compressor until the pressure is within range.
DTC B1672 will set if APT signal has not been received through the CAN line.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
–
Check CAN signal. | 1. Faulty APT sensor. 2. CAN communication. 3. Faulty APT Sensor wiring. |
Enable Conditions |
–
Ignition ON | |
Threshold value |
–
No CAN signal for 1.5 seconds or Error value received. | |
Failsafe |
–
Substitued APT value as '0' |
