Circuit/System Testing

Vehicle OFF and all vehicle systems OFF, disconnect the harness connector at the appropriate E17 Outside Rearview Mirror Glass. It may take up to 2 min for all vehicle systems to power down.
Test for less than 10 Ω between the ground circuit terminal 5 and ground.
- If 10 Ω or greater
1. Vehicle OFF.
2. Test for less than 2 Ω in the ground circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, repair the open/high resistance in the ground connection.
- If less than 10 Ω
Vehicle ON, connect a test lamp between the control circuit terminal 15 and the ground circuit terminal 5.
Verify the test lamp turns ON and OFF when commanding the appropriate Object Detection Indicator On and Off with a scan tool.
- If the test lamp is always OFF
1. Vehicle OFF, disconnect the harness connector at the appropriate B218 Side Object Sensor Module.
2. Test for infinite resistance between the control circuit and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - If infinite resistance
3. Test for less than 2 Ω in the control circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the B218 Side Object Sensor Module.
- If the test lamp is always ON
1. Vehicle OFF, disconnect the harness connector at the B218 Side Object Sensor Module, vehicle ON.
2. Test for less than 1 V between the control circuit and ground.
  - If 1 V or greater, repair the short to voltage on the circuit.
  - If less than 1 V, replace the B218 Side Object Sensor Module.
- If the test lamp turns ON and OFF
Test or replace the E17 Outside Rearview Mirror Glass.