DTC B132B-B132E
Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptors DTC B132B Parking Assist Rear Sensor Left Corner Circuit DTC B132C Parking Assist Rear Sensor Left Middle Circuit DTC B132D Parking Assist Rear Sensor Right Middle Circuit DTC B132E Parking Assist Rear Sensor Right Corner Circuit For symptom byte information, refer to Symptom Byte List. Diagnostic Fault Information
| Circuit Number | Circuit Function | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performan |
|---|---|---|---|---|---|
| 2374 | Voltage Reference | B1A30 11 | B132B 13, B132B 16, B132C 13, B132C 16, B132D 13, B132D 16, B132E 13, B132E 16 | B1A30 12 | — |
| 2375 | Signal | B132B 11, B132B 16 | B132B 13, B132B 16 | B132B 12 | B132B 29, B132B 92 |
| 2376 | Signal | B132C 11, B132C 16 | B132C 13, B132C 16 | B132C 12 | B132C 29, B132C 92 |
| 2377 | Signal | B132D 11, B132D 16 | B132D 13, B132D 16 | B132D 12 | B132D 29, B132D 92 |
| 2378 | Signal | B132E 11, B132E 16 | B132E 13, B132E 16 | B132E 12 | B132E 29, B132E 92 |
| 2379 | Low Reference | — | B132B 12, B132C 12, B132D 12, B132E 12, B1A30 19 | — | — |
The B306 Parking Assist Alarm Sensors are 3-wire ultrasonic sensors that are used to determine the distance between the vehicle and an object. The K182 Parking Assist Control Module supplies a voltage reference to the B306 Parking Assist Alarm Sensors via voltage reference circuit 2374 and provides ground via low reference circuit 2379. The K182 Parking Assist Control Module triggers the B306 Parking Assist Alarm Sensors in a sequential loop. After each B306 Parking Assist Alarm Sensor transmits, the K182 Parking Assist Control Module uses the sensor echo received through the signal circuits 2375, 2376, 2377, and 2378 to calculate the distance and position of an object. Conditions for Running the DTC Ignition ON Parking assist is activated Conditions for Setting the DTC B132B 11, B132C 11, B132D 11, B132E 11 The K182 Parking Assist Control Module has determined signal circuit 2375, 2376, 2377, or 2378 is shorted to ground B132B 12, B132C 12, B132D 12, B132E 12 The K182 Parking Assist Control Module has determined the voltage on signal circuit 2375, 2376, 2377, or 2378 is high B132B 13, B132C 13, B132D 13, B132E 13 The K182 Parking Assist Control Module has determined the signal circuit 2375, 2376, 2377, or 2378 is open B132B 16, B132C 16, B132D 16, B132E 16 The K182 Parking Assist Control Module has determined the signal circuit 2375, 2376, 2377, or 2378 is shorted to ground or open B132B 29, B132C 29, B132D 29, B132E 29 The K182 Parking Assist Control Module has received an invalid signal. B132B 4A, B132C 4A, B132D 4A, B132E 4A The K182 Parking Assist Control Module determines the wrong sensor type is installed. B132B 92, B132C 92, B132D 92, B132E 92 The K182 Parking Assist Control Module determines poor signal performance Action Taken When the DTC Sets The parking assist system is disabled. A service message may be displayed on the driver information center . Conditions for Clearing the DTC The condition for setting the DTC is no longer present. Reference Information Schematic Reference Parking Assistance Systems Schematics Connector End View Reference Master Electrical Component List Description and Operation Parking Assist Description and Operation Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for scan tool information Circuit/System Verification
- Ignition ON.
- Verify DTC B1A30 is not set. ⇒ If DTC B1A30 is set Refer to DTC B1A30. ⇓ If DTC B1A30 is not set
- Verify DTC B132B 12, B132C 12, B132D 12, or B132E 12 is not set. ⇒ If DTC B132B 12, B132C 12, B132D 12, or B132E 12 is set 3.1. Verify the appropriate B306 Parking Assist Alarm Sensors are not contaminated with snow, mud, dirt, slush, or ice. ⇒ If contaminated, clean the B306 Parking Assist Alarm Sensors. ⇓ If there is no contamination 3.2. Refer to Circuit/System Testing. ⇓ If DTC B132B 12, B132C 12, B132D 12, or B132E 12 is not set
- Verify DTC B132B 4A, B132C 4A, B132D 4A or B132E 4A is not set. ⇒ If DTC B132B 4A, B132C 4A, B132D 4A or B132E 4A is set Replace the appropriate B306 Parking Assist Alarm Sensor with the correct sensor type. ⇓ If DTC B132B 4A, B132C 4A, B132D 4A or B132E 4A is not set
- Refer to Circuit/System Testing. Circuit/System Testing
- Ignition OFF, disconnect the connector at the appropriate B306 Parking Assist Alarm Sensor: DTC B132B = B306E Parking Assist Alarm Sensor – Rear Left Outer DTC B132C = B306F Parking Assist Alarm Sensor – Rear Left Middle DTC B132D = B306G Parking Assist Alarm Sensor – Rear Right Middle DTC B132E = B306H Parking Assist Alarm Sensor – Rear Right Outer
- Verify a test lamp illuminates between low reference circuit terminal 3 and B+ ⇒ If the test lamp does not illuminate 2.1. Test circuit 2379 for an open/high resistance. ⇒ If an open/high resistance is found, repair the fault on the circuit. ⇓ If an open/high resistance is not found 2.2. Replace the K182 Parking Assist Control Module ⇓ If the test lamp illuminates
- Ignition ON.
- Verify a test lamp illuminates between voltage reference circuit terminal 1 and ground. ⇒ If a test lamp does not illuminate 4.1. Test circuit 2374 for a short to ground. ⇒ If a short to ground is found, repair the fault on the circuit. ⇓ If a short to ground is not found 4.2. Test circuit 2374 for an open/high resistance ⇒ If an open/high resistance is found, repair the fault on the circuit. ⇓ If an open/high resistance is not found 4.3. Replace the K182 Parking Assist Control Module ⇓ If a test lamp illuminates
- Test for 3.5 – 12.0 V between signal circuit terminal 2 and ground. ⇒ If less than 3.5 V 5.1. Test the appropriate circuit for a short to ground: DTC B132B = Circuit 2375 DTC B132C = Circuit 2376 DTC B132D = Circuit 2377 DTC B132E = Circuit 2378 ⇒ If a short to ground is found, repair the fault on the circuit. ⇓ If a short to ground is not found 5.2. Test the appropriate circuit for an open/high resistance: DTC B132B = Circuit 2375 DTC B132C = Circuit 2376 DTC B132D = Circuit 2377 DTC B132E = Circuit 2378 ⇒ If an open/high resistance is found, repair the fault on the circuit. ⇓ If an open/high resistance is not found 5.3. Replace the K182 Parking Assist Control Module ⇒ If greater than 12.0 V 5.1. Test the appropriate circuit for a short to voltage: DTC B132B = Circuit 2375 DTC B132C = Circuit 2376 DTC B132D = Circuit 2377 DTC B132E = Circuit 2378 ⇒ If a short to voltage is found, repair the fault on the circuit. ⇓ If a short to voltage is not found 5.2. Replace the K182 Parking Assist Control Module ⇓ If between 3.5 – 12.0 V
- Replace the appropriate B306 Parking Assist Alarm Sensor. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair. Parking Assistance Systems Component Replacement Reference Control Module References for control module replacement, programming, and setup.