Test Notes

LH Primary Crash Sensor Feed/Return Circuit Open

Normal Operation
The voltage at Pin C1-18, Circuit 619 (PK/W) is approximately 10 volts ± 1 volt. Circuit 619 (PK/W) is connected to Circuit 625 (Y/LG) inside LH primary crash sensor. Therefore, the voltage at Pin C1-6 should be the same as the voltage at Pin C1-18. If the voltage at Pin C1-6 is lower than the voltage at Pin C1-18, the air bag diagnostic monitor will flash DTC 42.

Possible Causes
Low voltage on Pin C1-6 can be caused by:
1. An open circuit in the wiring harness in either Circuit 619 (PK/W) or Circuit 625 (Y/LG).
2. An open circuit in LH primary crash sensor across the PK/W and Y/LG wires.