Test G: The Parking Aid Module Does Not Respond To The Diagnostic Tool

PINPOINT TEST G: THE PARKING AID MODULE DOES NOT RESPOND TO THE DIAGNOSTIC TOOL

G1-G3:

G3-G4:

Normal Operation
The Navigator parking aid module communicates with the diagnostic tool through the medium speed controller area network (CAN), circuits 2180 (WH/BK) and 2181 (BK/YE). The Expedition parking aid module communicates with the diagnostic tool through the international standards organization (ISO) 9141 communications network, circuit 70 (LB/WH). Check the communication circuits between the parking aid module C4226 (Expedition) or C4014b (Navigator) and the data link connector (DLC) C251. The total resistance values must not be more than 5 ohms. If the resistance is more than 5 ohms there is an open in one of the communication network circuits, damage to the DLC C251, damage to the parking aid module connectors, or a problem in an in-line connector.

Possible Causes
- ISO 9141 circuit 70 (LB/WH) open (Expedition only)
- medium speed CAN circuit 2180 (WH/BK) open (Navigator only)
- medium speed CAN circuit 2181 (BK/YE) open (Navigator only)
- parking aid module
- parking aid module C4226 (Expedition) or C4014b (Navigator)