Pinpoint Test D: DTC C1701, C1704, C1707 Or C1710
Parking Aid
Pinpoint Tests
Pinpoint Test D: DTC C1701, C1704, C1707 Or C1710
Refer to Wiring Diagram Set 131 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Parking Aid for schematic and connector information. Diagrams By Number
Normal Operation
The parking aid system is enabled when the vehicle ignition is in RUN and REVERSE (R) 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. A variable rate warning tone is generated from a parking aid speaker. The parking aid speaker increases the warning tone rate as the vehicle gets closer to an obstacle.
If no objects are present, the parking aid PIDs should read 255 cm (100 in).
C1701-C1710:
This pinpoint test is intended to diagnose the following:
- Parking aid sensor
- PAM
PINPOINT TEST D: DTC C1701, C1704, C1707 OR C1710
D1 CHECK THE DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PAM SELF-TESTS
- Check the PAM 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. [1][2]Diagnostic Trouble Code Descriptions
No
GO to D2.
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D2 CHECK THE PARKING AID SENSOR OPERATION
NOTE: Make sure the area around the vehicle is clear of anything that might 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. REPEAT the self-test.
No
GO to D3.
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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: Parking Aid PID.
- With the brake pedal applied, shift the transmission into REVERSE (R) and monitor the parking aid sensor distance PID. The PID will read 255 cm (100 in) on a correctly functioning sensor.
- Does the PID read 255 cm (100 in)?
Yes
GO to D4.
No
GO to D5.
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D4 CHECK THE PARKING AID SENSOR ATTENUATION PIDs
- Check the parking aid sensor attenuation PIDs.
- Do the attenuation PIDs read between 0 and 16?
Yes
GO to D6.
No
GO to D5.
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D5 INSTALL A KNOWN GOOD SENSOR
- Install a known good 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
INSTALL a new parking aid sensor. REFER to Parking Aid Sensor Service and Repair. CLEAR the DTCs. REPEAT the self-test.
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D6 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) Service and Repair. REPEAT the self-test.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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