Pinpoint Test A: The Parking Aid Is Inoperative

Parking Aid - Expedition

Pinpoint Tests

Pinpoint Test A: The Parking Aid Is Inoperative

Normal Operation

The parking aid system is disabled if any fault is detected and the message center indicates the parking aid is disabled. The parking aid system is also disabled when the operator selects parking aid disable through the message center. The parking aid system remains disabled until either the ignition key is cycled from OFF to RUN, or parking aid enable is selected through the message center. The Parking Aid Module (PAM) communicates with the scan tool, the Smart Junction Box (SJB), the Audio Control Module (ACM) and the Instrument Cluster (IC) on the Medium Speed Controller Area Network (MS-CAN).

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- PAM



PINPOINT TEST A: THE PARKING AID IS INOPERATIVE

-------------------------------------------------
A1 VERIFY THE PAM COMMUNICATES WITH THE SCAN TOOL


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Carry out the network test.
- Does the PAM communicate with the scan tool?

Yes
GO to A2.

No
REFER to Information Bus.

-------------------------------------------------
A2 CHECK THE DTCs FROM THE PAM ON-DEMAND SELF-TEST


- Enter the following diagnostic mode on the scan tool: PAM Self-Test.
- Retrieve the DTCs from the PAM on-demand self-test.
- Are any DTCs recorded?

Yes
REFER to DTC Charts. Parking Aid

No
GO to A3.

-------------------------------------------------
A3 CHECK THE MESSAGE CENTER DISPLAY


- Observe the message center.
- Does the message center display PARK AID OFF?

Yes
ENABLE parking aid in the message center. REPEAT the on-demand self-test.

No
GO to A4.

-------------------------------------------------
A4 CHECK FOR CORRECT PAM OPERATION


- Disconnect the PAM connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the PAM connector and make sure it seats correctly.
- Operate the system and determine if the concern is still present.
- Is the concern still present?

Yes
INSTALL a new PAM. REFER to Parking Aid Module (PAM) - Expedition Service and Repair. TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

-------------------------------------------------