Pinpoint Test A: The Parking Aid Is Inoperative

Parking Aid

Pinpoint Test A: The Parking Aid Is Inoperative

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

Normal Operation

The parking aid system is enabled when the ignition switch is in the RUN position and the REVERSE (R) gear is selected. The Parking Aid Module (PAM) receives a reverse gear input from the PCM through the High Speed Controller Area Network (HS-CAN). A reference voltage and signal return is supplied to the parking aid sensors from the PAM (Parking Aid Module). The PAM (Parking Aid Module) receives an input signal from each individual parking aid sensor. The system can be disabled through the message center which is part of the Instrument Panel Cluster (IPC).

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- Parking aid sensor(s) alignment

- Parking aid sensor(s)

- PAM (Parking Aid Module)

- Rear bumper cover

PINPOINT TEST A : THE PARKING AID IS INOPERATIVE

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

A1 CHECK THE DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PAM (Parking Aid Module) SELF-TESTS

- Check the PAM (Parking Aid Module) DTCs from the continuous and on-demand self-tests.

Are any PAM (Parking Aid Module) DTCs recorded?

Yes
REFER to DTC Charts. Parking Aid

No
GO to A2.

A2 CHECK THE MESSAGE CENTER FOR PARKING AID DISABLE OPERATION

- While observing the IPC (Instrument Panel Cluster) message center, disable and enable the parking aid system.

Does the message center display PARK AID OFF when the parking aid system is disabled, and display PARK AID ON when the parking aid system is enabled?

Yes
GO to A3.

No
REFER to Instrument Panel, Gauges and Warning Indicators.

A3 CHECK FOR CORRECT REVERSE GEAR INPUT

- Apply the parking brake.

- Ignition ON.

- Select REVERSE.

- Enter the following diagnostic mode on the scan tool: PAM (Parking Aid Module) DataLogger.

- Monitor the PAM (Parking Aid Module) PID (TRANSGR).

Does the PID read REVERSE?

Yes
GO to A4.

No
GO to A5.

A4 CHECK THE PARKING AID SENSORS FOR CORRECT ALIGNMENT

NOTE: If the vehicle was in a rear end collision, the parking aid sensors may not be aligned correctly.

- Check the bumper for correct alignment.

- Carry out the azimuth system check. Refer to Azimuth System Check .

- Carry out the elevation system check. Refer to Elevation System Check .

Does the parking aid system pass both system checks?

Yes
GO to A6.

No
REALIGN or INSTALL a new bumper cover. If the vehicle was in a rear end collision, further body work may be required to bring the parking aid sensors into correct alignment.

A5 CHECK THE PCM FOR DIGITAL TRANSMISSION RANGE SENSOR DTCs

- Check the PCM for DTCs P0705, P0706, P0708 and P0709.

Are any of these DTCs present?

Yes
REFER to Automatic Transmission/Transaxle &/or Transmission Control Systems to continue diagnosis of the digital TR (Transmission Range) sensor.

No
GO to A7.

A6 MONITOR THE PAM (Parking Aid Module) DISTANCE PIDs

- Enter the following diagnostic mode on the scan tool: PAM (Parking Aid Module) DataLogger.

- Monitor the PAM distance PIDs while moving a test object into and out of the semicircular field directly behind each of the rear sensors:

PID Description LRO_DIST Left rear outer parking aid sensor distance LRI_DIST Left rear inner parking aid sensor distance RRO_DIST Right rear outer parking aid sensor distance RRI_DIST Right rear inner parking aid sensor distance

Do the PID readings correspond to the approximate distance between the sensor and the test object?

Yes
GO to A7.

No
INSTALL a new sensor(s) for the one in question. REFER to Parking Aid Sensor . TEST the system for normal operation.

A7 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 determine if the concern is still present.

Is the concern still present?

Yes
INSTALL a new PAM (Parking Aid Module). REFER to Parking Aid Module (PAM) . 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.