C1701

Parking Aid

Pinpoint Test D: DTCs C1701, C1704, C1707 And C1710


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) calculates the distance to an object by the use of 4 ultrasonic sensors mounted in the rear bumper. The parking aid sensors can detect obstructions in the path behind the vehicle. The attenuation time for the rear parking aid sensors is the time required for a sensor to detect the distance to an object expressed in milliseconds (ms).





This pinpoint test is intended to diagnose the following:

- Dirty or obstructed parking aid sensor

- Parking aid sensor

- Parking aid bumper harness

- PAM (Parking Aid Module)

PINPOINT TEST D : DTCs C1701, C1704, C1707 AND C1710

D1 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 parking aid DTCs other than C1701, C1704, C1707 or C1710 recorded?

Yes
DIAGNOSE the other DTCs first. REFER to DTC Charts. Parking Aid

No
GO to D2.

D2 CHECK THE PARKING AID SENSOR OPERATION

NOTE: Make sure the area around the vehicle is clear of anything that can activate the parking aid system.

- Clean the rear bumper and sensors with high-pressure water.

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

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

Does the parking aid system pass both system checks?

Yes
The system is operating correctly at this time. The concern may have been caused by a dirty or blocked parking aid sensor. CLEAR the DTCs. TEST the system for normal operation.

No
GO to D3.

D3 CHECK THE PARKING AID SENSOR DISTANCE PIDs

- Make sure the suspect parking aid sensor(s) is flush-mounted in the bezel.

- Ignition ON.

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

- With the brake pedal applied, shift the transmission into REVERSE (R) and monitor the parking aid sensor distance PID. The PID reads 255 cm (100 in or 8.4 ft) on a correctly functioning sensor.

Does the PID read 255 cm (100 in or 8.4 ft)?

Yes
GO to D4.

No
GO to D5.

D4 CHECK THE PARKING AID SENSOR ATTENUATION PIDs

- Check the parking aid sensor attenuation PIDs.

Do the attenuation PIDs read between 0 and 16 ms?

Yes
GO to D6.

No
GO to D5.

D5 CHECK THE PARKING AID SENSORS

- Install a new sensor for the suspect parking aid sensor.

- Ignition ON.

- Clear the DTCs. Repeat the self-test. Operate the system and verify the concern is still present.

Is the concern still present?

Yes
GO to D6.

No
The cause of the concern was an inoperative parking aid sensor. The system is now operating correctly.

D6 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) 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. REPEAT the self-test.