Test Notes

Fault Code 46-Open Splice Center Air Bag Sensor Ground Monitor

Normal Operation

The air bag diagnostic monitor measures the resistance between pin 22 (circuit 620 P/LB) and pin 3 (diagnostic monitor reference ground). If the air bag diagnostic monitor measures a difference of more than 2.0 ohms between pin 22 and pin 3, it will flash a code 46.

Pin 22 is used in a three air bag sensor system as the third sensor ground monitor. In this case pin 22 is spliced into the center radiator crash ground monitor of the center air bag sensor and bracket, because only two sensors are used.

Possible Causes

High resistance on pin 22 (circuit 934 "BR") to ground can be caused by:

1. An open or damaged wire in circuit 620 P/LB from pin 22 of the diagnostic monitor harness connector to the splice which joins it to the P/LB wire coming from pin 21.