Pinpoint Test Q: B1B44:98, B1B46:98, B1B48:98, B1B50:98

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B44:98	Right Rear Outer Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the RHR outer parking aid sensor detects an over temperature event.
PAM B1B46:98	Right Rear Inner Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the RHR inner parking aid sensor detects an over temperature event.
PAM B1B48:98	Left Rear Outer Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the LHR outer parking aid sensor detects an over temperature event.
PAM B1B50:98	Left Rear Inner Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the LHR inner parking aid sensor detects an over temperature event.
IPMB B1B44:98	Right Rear Outer Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the RHR outer parking aid sensor detects an over temperature event.
IPMB B1B46:98	Right Rear Inner Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the RHR inner parking aid sensor detects an over temperature event.
IPMB B1B48:98	Left Rear Outer Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the LHR outer parking aid sensor detects an over temperature event.
IPMB B1B50:98	Left Rear Inner Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the LHR inner parking aid sensor detects an over temperature event.

Possible Sources

Aftermarket parts
Damage to the rear bumper or sensor
Rear parking aid sensor
PAM (vehicles without 360 degree view camera)
IPMB (vehicles with 360 degree view camera)

Q1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360 DEGREE VIEW CAMERA) SELF-TEST
- Ignition ON.
- Using a diagnostic scan tool, perform the PAM or IPMB (for vehicles with 360 degree view camera) self-test.
- Check the parking aid Diagnostic Trouble Codes (DTCs) from the self-test.
Are parking aid Diagnostic Trouble Codes (DTCs) other than B1B44:98, B1B46:98, B1B48:98 or B1B50:98 recorded?

Yes For all other Diagnostic Trouble Codes (DTCs), REFER to Diagnostic Trouble Code (DTC) Chart .

No GO to Q2

Q2 CHECK THE PARKING AID SENSOR FOR PROPER VENTILATION

NOTE: The operating temperature range for the parking aid sensors is -40deg.C (-40deg.F) to 85deg.C (176deg.F).
- Clean the rear bumper and sensors with high-pressure water.
- Make sure the suspect parking aid sensor(s) has its heat shield and is flush-mounted in the bezel.
- Check for damage, debris or any aftermarket air dams that may restrict sensor ventilation.
- Check for aftermarket exhaust or other aftermarket parts.
Is there any damage or aftermarket parts restricting the ventilation to the sensor(s)?

Yes REPAIR or REMOVE the parts as needed.

No GO to Q3

Q3 CHECK THE PARKING AID SENSORS
- Ignition OFF.
- Install a known good sensor for the suspect parking aid sensor. REFER to: Rear Parking Aid Sensor .
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM or IPMB (for vehicles with 360 degree view camera) self-test.
Is the concern still present?

Yes For vehicles without 360 degree view camera, GO to Q4 For vehicles with 360 degree view camera, GO to Q5

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

Q4 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes	CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new PAM. REFER to: Parking Assist Control Module (PAM) .

No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

Q5 CHECK FOR CORRECT IPMB (IMAGE PROCESSING MODULE B) OPERATION

Ignition OFF.

Disconnect and inspect all IPMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPMB connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes	CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new. IPMB. REFER to: Image Processing Module B (IPMB) .

No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.