Pinpoint Test B : Poor Image Quality - Rear Parking Aid Camera

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.

B1 CHECK AND CLEAN THE CAMERA LENS

Clean and make sure the rear video camera lens is clear of any debris and scratches.

Test the rear video camera system and inspect the video camera image

Is the concern still present?

Yes

GO to B2

No	The system is operating correctly at this time. The concern may have been caused by dirt or debris on the camera lens or intermittent electromagnetic interference from an outside source.

B2 CHECK THE COAXIAL CABLE CORE AND SHIELD FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect IPMB C2821B .

Disconnect rear parking aid camera C4360B .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4360B-1	Courtesy of FORD MOTOR COMPANY	Ground
C4360B-Shield	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPLACE the affected coaxial cable.

GO to B3

B3 CHECK THE COAXIAL CABLE CORE AND SHIELD FOR A SHORT TO GROUND

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4360B-1	Courtesy of FORD MOTOR COMPANY	Ground
C4360B-Shield	Courtesy of FORD MOTOR COMPANY	Ground

Are the resistances greater than 10, 000 ohms?

Yes

GO to B4

No	REPLACE the affected coaxial cable.

B4 CHECK COAXIAL CABLE CORE AND SHIELD FOR AN OPEN BETWEEN THE IPMB (IMAGE PROCESSING MODULE B) AND REAR PARKING AID CAMERA

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4360B-1	Courtesy of FORD MOTOR COMPANY	C2821B-2
C4360B-Shield	Courtesy of FORD MOTOR COMPANY	C2821B-2 Shield

Are the resistances less than 3 ohms?

Yes

GO to B5

No	REPLACE the affected coaxial cable.

B5 CHECK COAXIAL CABLE CORE AND SHIELD FOR A SHORT TOGETHER AT THE REAR PARKING AID CAMERA

Measure:

Rear Camera

Positive Lead	Measurement / Action	Negative Lead
C4360B-1	Courtesy of FORD MOTOR COMPANY	C4360B-Shield

Are the resistances greater than 10, 000 ohms?

Yes

GO to B6

No	REPLACE the affected coaxial cable.

B6 CHECK FOR VOLTAGE AT THE IPMB (IMAGE PROCESSING MODULE B)

Ignition OFF.

Disconnect IPMB C2821A .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2821A-10	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to B7

No	INSPECT BJB fuse 15 (15A). If the fuse is OK, repair the circuit for an open. If the fuse is not OK, REFER to the Wiring Diagrams information to identify the possible causes of the short circuit.

B7 CHECK FOR GROUND AT THE IPMB (IMAGE PROCESSING MODULE B)

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2821A-24	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes

GO to B8

No	REPAIR the circuit.

B8 CHECK THE VIDEO SIGNAL AND SHIELD CIRCUITS FOR A SHORT TO VOLTAGE BETWEEN THE IPMB (IMAGE PROCESSING MODULE B) AND APIM (SYNC MODULE)

Disconnect APIM C2383A .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2821A-1	Courtesy of FORD MOTOR COMPANY	Ground
C2821A-2	Courtesy of FORD MOTOR COMPANY	Ground
C2821A-11	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes

GO to B9

No	REPAIR the circuit in question.

B9 CHECK THE VIDEO SIGNAL CIRCUITS FOR AN OPEN BETWEEN THE IPMB (IMAGE PROCESSING MODULE B) AND APIM (SYNC MODULE)

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2821A-1	Courtesy of FORD MOTOR COMPANY	C2383A-14
C2821A-2	Courtesy of FORD MOTOR COMPANY	C2383A-33
C2821A-11	Courtesy of FORD MOTOR COMPANY	C2383A-15

Are the resistances less than 3 ohms?

Yes

GO to B10

No	REPAIR the circuit in question.

B10 CHECK THE VIDEO SIGNAL CIRCUITS FOR A SHORT TO GROUND BETWEEN THE IPMB (IMAGE PROCESSING MODULE B) AND APIM (SYNC MODULE)

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2821A-1	Courtesy of FORD MOTOR COMPANY	Ground
C2821A-11	Courtesy of FORD MOTOR COMPANY	Ground

Are the resistances greater than 10, 000 ohms?

Yes

GO to B12

No	REPAIR the circuit in question.

B11 INSTALL A KNOWN GOOD REAR PARKING AID CAMERA
- Ignition OFF.
- Install a known good rear parking aid camera. REFER to: Rear Parking Aid Camera .
- Ignition ON.
- Using a diagnostic scan tool, clear the IPMB Diagnostic Trouble Codes (DTCs) and repeat the self-test.
Is the concern still present?

Yes GO to B12

No INSTALL a new rear parking aid camera, REFER to: Rear Parking Aid Camera .

B12 CHECK FOR CORRECT IPMB (IMAGE PROCESSING MODULE B) OPERATION

Ignition OFF.

Disconnect and inspect the 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) . If the concern is still present after IPMB replacement, GO to B13

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.

B13 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the APIM 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 APIM connectors. Make sure it seats and latches 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, Refer to APIM GUIDED ROUTINE TESTING -- NAVIGATOR .

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.