Pinpoint Test A: No Communication With The Parking Aid Module

WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

A1 CHECK THE PARKING AID MODULE CIRCUIT 294 (WH/LB) FOR AN OPEN
- Key in OFF position.
- Disconnect: Parking Aid Module C2023.
- Key in ON position.
- Measure the voltage between the parking aid module C2023-1, circuit 294 (WH/LB), harness side and ground.
  
  Fig 1: Measuring Voltage Between Parking Aid Module C2023-1, Circuit 294 (WH/LB), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
- Yes : GO to A2.
- No : REPAIR the circuit. TEST the system for normal operation.
A2 CHECK CIRCUIT 857 (BK/LB) FOR AN OPEN
- Key in OFF position.
- Measure the resistance between the parking aid module C2023-4, circuit 875 (BK/LB), harness side and ground.
  
  Fig 2: Measuring Resistance Between Parking Aid Module C2023-4, Circuit 875 (BK/LB), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : REFER to MODULE COMMUNICATIONS NETWORK to continue diagnosis of the communication network.
- No : REPAIR the circuit. TEST the system for normal operation.