Circuit/System Testing

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

Ignition OFF. Disconnect the harness connector at the B60 Passenger Presence Sensor, wait 120 seconds.
Test for less than 30 Ω between the low reference circuit terminal 2 and ground.
- If 30 Ω or greater
1. Ignition OFF, disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.
2. Test for less than 2 Ω in the low reference circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
- If less than 30 Ω
Ignition ON.
Test for 4.75-5.25 V between the signal circuit terminal 1 and ground.
- If less than 4.75 V
1. Disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module.
2. Test for infinite resistance between the signal circuit and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
3. Test for less than 2 Ω in the signal circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
- If greater than 5.25 V
1. Ignition OFF. Disconnect the X2 harness connector at the K36 Inflatable Restraint Sensing and Diagnostic Module. Ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
  - If 1 V or greater, repair the short to voltage on the circuit.
  - If less than 1 V, replace the K36 Inflatable Restraint Sensing and Diagnostic Module.
- If between 4.75-5.25 V
Replace the B60 Passenger Presence Sensor.