Circuit/System Testing

• X510 @ A9A Outside Rearview Mirror - Driver
• X610 @ A9B Outside Rearview Mirror - Passenger

• If the test lamp does not turn On 

1. Test for less than 2 ohms between the test points: Ground circuit terminal 5 @ Component harness & Ground circuit terminal
   • If 2 ohms or greater - Repair the open/high resistance in the circuit.
   • If less than 2 ohms - Repair the open/high resistance in the ground connection.

• Go to next step: If the test lamp turns On 

Verify the test lamp turns On and Off.

• If the test lamp is always Off 

1. Ignition/Vehicle - Off & Remove - Test lamp
2. Disconnect the electrical connector: B218R Side Object Sensor Module - Right
3. Test for infinite resistance between the test points: Control circuit terminal 15 @ Component harness & Ground
   • If less than infinite resistance - Repair the short to ground on the circuit.
   • Go to next step: If infinite resistance
4. Test for less than 2 ohms between the test points: Control circuit terminal 15 @ Component harness & The other end of the circuit @ Control module harness
   • If 2 ohms or greater - Repair the open/high resistance in the circuit.
   • If less than 2 ohms - Replace the component: B218R Side Object Sensor Module - Right

• If the test lamp is always On 

1. Ignition/Vehicle - Off & Remove - Test lamp
2. Disconnect the electrical connector: B218R Side Object Sensor Module - Right
3. Ignition - On / Vehicle - In Service Mode
4. Test for less than 1 V between the test points: Control circuit terminal 15 @ Component harness & Ground
   • If 1 V or greater - Repair the short to voltage on the circuit.
   • If less than 1 V - Replace the component: B218R Side Object Sensor Module - Right

• Go to next step: If the test lamp turns On and Off