Pinpoint Test C : B13F3:08, B13F3:31 And B13F3:1F
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
- C1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST
- Ignition ON.
- Using a diagnostic scan tool, perform the PAM self-test.
- Check the PAM Diagnostic Trouble Codes (DTCs) from the self-test.
Are Diagnostic Trouble Codes (DTCs) for multiple front parking aid sensors recorded?
Yes GO to C2 No *For Diagnostic Trouble Codes (DTCs) B13F3:08, B13F3:31, or B13F3:1F GO to C3
* For all other PAM Diagnostic Trouble Codes (DTCs), REFER to PAM DTC Chart . - C2 CHECK THE REAR BUMPER WIRING HARNESS
- Inspect the rear bumper wiring harness for opens, shorts, grounds or corrosion.
Is the rear bumper wiring harness OK?
Yes GO to C3 No REPAIR or INSTALL a new rear bumper wiring harness. - C3 CHECK FOR VOLTAGE TO THE SENSOR
- Ignition OFF.
- Disconnect left rear active park assist sensor C4220 .
- Ignition ON.
Is the voltage greater than 9 volts?
Yes GO to C4 No REPAIR the circuit. - C4 CHECK FOR GROUND AT THE SENSOR
Is the voltage greater than 9 volts?
Yes GO to C5 No REPAIR the circuit. - C5 CHECK THE SENSOR FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect left rear active park assist sensor C4220 .
Is the resistance greater than 10, 000 ohms?
Yes GO to C6 No REPAIR the circuit. - C6 CHECK THE SENSOR FOR A SHORT TO POWER
- Ignition ON.
Is any voltage present?
Yes REPAIR the affected circuits. No GO to C7 - C7 CHECK THE SENSOR FOR A SHORT TO VREF OR SIGNAL RETURN CIRCUITS
- Ignition OFF.
- Disconnect PAM C4226A .
Are the resistances greater than 10, 000 ohms?
Yes GO to C8 No REPAIR the affected circuits. - C8 CHECK THE SENSOR CIRCUITS FOR AN OPEN
- Ignition OFF.
- Disconnect left rear active park assist sensor C4220 .
- Disconnect PAM C4226A .
- Measure:
Positive Lead Measurement / Action Negative Lead C4220-1 C4226A-3 C4220-2 C4226A-17 C4220-3 C4226A-10
Are the resistances less than 3 ohms?
Yes GO to C9 No REPAIR the affected circuit. - C9 INSTALL A KNOWN GOOD SENSOR
- Connect PAM C4226A .
- Install a known good sensor for the suspect left rear active park assist sensor. REFER to: Rear Active Park Assist Sensors .
- Ignition ON.
- Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs) and repeat the self-test.
Is DTC B13F3:08, B13F3:31 or B13F3:1F still present?
Yes GO to C10 No INSTALL a new left rear active park assist sensor for the one in question. REFER to: Rear Active Park Assist Sensors . - C10 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.