Pinpoint Test O: The Parking Aid Module (PAM) Does Not Respond To The Scan Tool

Communications Network

Pinpoint Test O: The Parking Aid Module (PAM) Does Not Respond To The Scan Tool

Refer to Wiring Diagram Set 14, Module Communications Network for schematic and connector information [1][2]Diagrams By Number.

Refer to Wiring Diagram Set 131, Parking Aid for schematic and connector information [1][2]Diagrams By Number.

Normal Operation

The Parking Aid Module (PAM) communicates with the scan tool and other modules through the High Speed Controller Area Network (HS-CAN).

This pinpoint test is intended to diagnose the following:

- Fuse

- Wiring, terminals or connectors

- PAM (Parking Aid Module)

PINPOINT TEST O : THE PAM (Parking Aid Module) DOES NOT RESPOND TO THE SCAN TOOL

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: Failure to disconnect the battery when instructed results in false resistance readings.

O1 CHECK THE PAM (Parking Aid Module) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

- Disconnect: PAM (Parking Aid Module) C4014.

- Ignition ON.

- Measure the voltage between the PAM (Parking Aid Module) C4014-1, circuit CBP32 (GN/VT), harness side and ground.





Is the voltage greater than 10 volts?

Yes
GO to O2.

No
VERIFY the Smart Junction Box (SJB) fuse 32 (10A) is OK. If OK, REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short [1][2]Diagrams By Number.

O2 CHECK THE PAM (Parking Aid Module) GROUND CIRCUIT FOR AN OPEN

- Ignition OFF.

- Disconnect: Negative Battery Cable.

- Measure the resistance between the PAM (Parking Aid Module) C4014-4, circuit GD110 (BK/WH), harness side and ground





Are the resistances less than 5 ohms?

Yes
GO to O3.

No
REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.

O3 CHECK THE HS-CAN (High Speed Controller Area Network) CIRCUITS BETWEEN THE PAM (Parking Aid Module) AND THE DLC (Data Link Connector) FOR AN OPEN

- Measure the resistance between the PAM (Parking Aid Module) C4014-3, circuit VDB04 (WH/BU), harness side and the Data Link Connector (DLC) C251-6, circuit VDB04 (WH/BU), harness side.





- Measure the resistance between the PAM (Parking Aid Module) C4014-11, circuit VDB05 (WH), harness side and the DLC (Data Link Connector) C251-14, circuit VDB05 (WH), harness side.





Are the resistances less than 5 ohms?

Yes
GO to O4.

No
REPAIR the circuit in question. CONNECT the negative battery cable. CLEAR the DTCs. REPEAT the network test with the scan tool.

O4 CHECK FOR CORRECT PAM (Parking Aid Module) OPERATION

- Disconnect the PAM (Parking Aid Module) connector.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect the PAM (Parking Aid Module) connector and make sure it seats correctly.

- Operate the system and verify the concern is still present.

Is the concern still present?

Yes
INSTALL a new PAM (Parking Aid Module). CLEAR the DTCs. REPEAT the network test with the scan tool.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.