Pinpoint Test D: DTCs B1B44:96, B1B46:96, B1B48:96 And B1B50:96
Parking Aid
Pinpoint Tests
Pinpoint Test D: DTCs B1B44:96, B1B46:96, B1B48:96 And B1B50:96
Normal Operation
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). A fault condition occurs when the signal or the attenuation time is out of normal range.
This pinpoint test is intended to diagnose the following:
- Parking aid sensor
- PAM
PINPOINT TEST D: DTCs B1B44:96, B1B46:96, B1B48:96 AND B1B50:96
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D1 RETRIEVE THE RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PAM SELF-TESTS
- Retrieve the recorded PAM DTCs from the continuous and on-demand self-tests.
- Are parking aid DTCs other than B1B44:96, B1B46:96, B1B48:96 and B1B50:96 recorded?
Yes
DIAGNOSE the other DTCs first. REFER to DTC Charts. Parking Aid
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 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.
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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 reads 255 cm (8.4 ft) on a correctly functioning sensor.
- Does the PID read 255 cm (8.4 ft)?
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 all of the attenuation PIDs read between 0 and 16 ms?
Yes
GO to D6.
No
GO to D5.
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D5 INSTALL A KNOWN GOOD SENSOR
- Ignition OFF.
- 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.
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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. 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.
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