Pinpoint Test B: Poor Image Quality

NOTE: Before disconnecting the rear parking aid camera, verify that the connector is properly seated and latched.

Refer to PARKING AID for schematic and connector information.

Normal Operation and Fault Conditions

The rear parking aid camera transmits the video signal on twisted pair, shielded wires to help reduce interference. A compromise of the integrity of the camera ground circuit, video signal circuits or video shield circuit can affect the quality of the image.

Possible Sources
- Fuse
- Dirty or scratched camera lens
- Wiring, terminals or connectors
- Rear parking aid camera
- Interference from other sources
Visual Inspection and Pre-checks
- Make sure the rear parking aid camera lens is clear of any debris.

B1 CHECK AND CLEAN THE CAMERA LENS

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

Test the rear parking aid camera system while observing 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 VOLTAGE TO THE REAR CAMERA

Ignition OFF.

Disconnect Rear Parking Aid Camera C4357.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4357-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to B3

No	INSPECT BJB fuse 61 (15A). If the fuse is OK, repair the circuit for an open. If the fuse is not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible causes of the short circuit.

B3 CHECK THE CAMERA GROUND CIRCUIT

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4357-5	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes

GO to B4

No	REPAIR the circuit.

B4 CHECK THE VIDEO SIGNAL AND SHIELD CIRCUITS FOR A SHORT TO VOLTAGE

Disconnect APIM C2383A (if equipped with SYNC).

Disconnect ACM C240A (without SYNC).

Disconnect Interior Mirror C9039 (if equipped with display in mirror).

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4357-3	Courtesy of FORD MOTOR COMPANY	Ground
C4357-4	Courtesy of FORD MOTOR COMPANY	Ground
C4357-5	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit in question.

GO to B5

B5 CHECK THE VIDEO SIGNAL AND SHIELD CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4357-3	Courtesy of FORD MOTOR COMPANY	Ground
C4357-4	Courtesy of FORD MOTOR COMPANY	Ground

Are the resistances greater than 10, 000 ohms?

Yes

GO to B6

No	REPAIR the circuit in question.

B6 CHECK THE VIDEO SIGNAL CIRCUITS FOR A SHORT TO THE VIDEO SHIELD

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4357-3	Courtesy of FORD MOTOR COMPANY	C4357-5
C4357-4	Courtesy of FORD MOTOR COMPANY	C4357-5

Are the resistances greater than 10, 000 ohms?

Yes

GO to B7

No	REPAIR the circuit in question.

B7 CHECK VIDEO SIGNAL CIRCUITS FOR AN OPEN

Measure:

With SYNC

Positive Lead	Measurement / Action	Negative Lead
C4357-4	Courtesy of FORD MOTOR COMPANY	C2383A-14
C4357-3	Courtesy of FORD MOTOR COMPANY	C2383A-15

Without SYNC

Positive Lead	Measurement / Action	Negative Lead
C4357-4	Courtesy of FORD MOTOR COMPANY	C240A-14
C4357-3	Courtesy of FORD MOTOR COMPANY	C240A-25

With interior mirror display

Positive Lead	Measurement / Action	Negative Lead
C4357-4	Courtesy of FORD MOTOR COMPANY	C9039-4
C4357-3	Courtesy of FORD MOTOR COMPANY	C9039-5

Are the resistances less than 3 ohms?

Yes

GO to B8

No	REPAIR the circuit in question.

B8 CHECK THE VIDEO SHIELD CIRCUIT FOR AN OPEN

Disconnect inline C983.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4357-5	Courtesy of FORD MOTOR COMPANY	C983-1 (male side)

Is the resistance less than 3 ohms?

Yes

GO to B9

No	REPAIR the circuit

B9 CHECK FOR CORRECT PARKING AID CAMERA OPERATION

Ignition OFF.

Disconnect and inspect the rear parking aid camera connector and related in-line 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 rear parking aid camera connector. 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new camera. REFER to: Rear Parking Aid Camera .

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.