Pinpoint Test F : DTC B1B36:12, B1B38:12, B1B40:12 Or B1B42:12
WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Before disconnecting the PAM or any of the sensors, verify that the connectors are properly seated and latched.
- F1 CHECK THE PAM DTCs
- Ignition ON.
- Using a scan tool, perform the PAM self-test.
Are multiple front parking aid sensor DTCs recorded?
Yes GO to F2. No GO to F3. - F2 CHECK THE FRONT BUMPER WIRING HARNESS
- Ignition OFF.
- Inspect the front bumper wiring harness for opens, shorts, grounds, or corrosion.
Is the wiring harness OK?
Yes GO to F3. No REPAIR or INSTALL a new front bumper wiring harness. - F3 CHECK THE FRONT SENSOR SIGNAL CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: PAM C4014B .
- Ignition ON.
- Measure:
DTC B1B36:12
Positive Lead Measurement / Action Negative Lead C1431-2 Ground DTC B1B38:12
Positive Lead Measurement / Action Negative Lead C1430-2 Ground DTC B1B40:12
Positive Lead Measurement / Action Negative Lead C1428-2 Ground DTC B1B42:12
Positive Lead Measurement / Action Negative Lead C1429-2 Ground
Is any voltage present?
Yes REPAIR the circuit(s) in question. No GO to F4. - F4 CHECK THE FRONT SENSOR VOLTAGE SUPPLY AND SIGNAL CIRCUITS FOR A SHORT TOGETHER
- Ignition OFF.
- Measure:
DTC B1B36:12
Positive Lead Measurement / Action Negative Lead C1428-2 C4011-1 DTC B1B38:12
Positive Lead Measurement / Action Negative Lead C4012-2 C4012-1 DTC B1B40:12
Positive Lead Measurement / Action Negative Lead C4009-2 C4009-1 DTC B1B42:12
Positive Lead Measurement / Action Negative Lead C4010-2 C4010-1
Is the resistance greater than 10, 000 ohms?
Yes If all of the parking aid sensors recorded DTCs, GO to F5.If one or more (but not all) parking aid sensor(s) recorded DTCs, INSTALL a new sensor(s) for the one in question. REFER to Parking Aid Sensor - Front . No REPAIR the circuits in question. - F5 CHECK FOR CORRECT PAM OPERATION
- Disconnect and inspect the PAM connectors.
- Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged 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 TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new PAM. REFER to Parking Aid Module (PAM) . No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.