Pinpoint Test E: The Rear Video Is Inoperative
Parking Aid - Video
Pinpoint Tests
Pinpoint Test E: The Rear Video Is Inoperative
Normal Operation
When the ignition switch is in the RUN position, the video camera receives voltage. For vehicles without navigation, with the transmission selector in REVERSE (R), a reverse signal message from the Body Control Module (BCM) is sent over a dedicated Local Interconnect Network (LIN) to the auto-dimming interior mirror, enabling the system. For vehicles with navigation, with the transmission selector in REVERSE (R), the BCM sends a reverse signal message to the Audio Control Module (ACM) over the Medium Speed Controller Area Network (MS-CAN), enabling the system. The video signal from the video camera displays an image on the left portion of the auto-dimming interior mirror for vehicles without navigation, or displays an image on the Front Display Interface Module (FDIM) for vehicles with navigation.
- DTC B115E:08 (Camera Module: Bus Signal/Message Failure) - an on-demand DTC that sets in the BCM when there is a LIN communication fault from the video camera.
- DTC C1001:01 (Vision System Camera: General Electrical Failure) - a continuous DTC that sets in the ACM when no video signal is detected from the video camera when the vehicle is in reverse.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Video camera
- Auto-dimming interior mirror (without navigation)
- ACM (with navigation)
- BCM
PINPOINT TEST E: THE REAR VIDEO IS INOPERATIVE
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: Failure to disconnect the battery when instructed results in false resistance readings. Refer to Battery, Mounting and Cables Battery Disconnect.
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E1 CHECK AND CLEAN THE REAR VIDEO CAMERA LENS
- Clean and make sure the rear video camera lens is clear of any debris.
- Test the video camera system and verify the video camera image.
- Is the video camera concern still present?
Yes
GO to E2.
No
The system is operating correctly at this time. The concern was caused by a dirty video camera lens.
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E2 CHECK THE REVERSING LAMPS OPERATION
- Ignition OFF.
- Apply the parking brake.
- Ignition ON.
- Select REVERSE.
- Check the operation of the reversing lamps.
- Do the reversing lamps operate correctly?
Yes
GO to E3.
No
REFER to Exterior Lighting Testing and Inspection.
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E3 CHECK THE DTCs FROM THE BCM SELF-TEST
- Check the BCM DTCs from the self-test.
- Are any BCM DTCs retrieved?
Yes
For BCM DTC B115E:08, GO to E19.
For all other DTCs, REFER to DTC Charts. Parking Aid - Video - DTC Charts
No
For an inoperative video camera feature concern, GO to E4. Otherwise, GO to E5
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E4 VERIFY AND ENABLE THE INOPERATIVE VIDEO CAMERA FEATURE
- Verify and enable the inoperative video camera feature within the FDIM (with navigation) or message center (without navigation).
- Does the video camera feature operate correctly?
Yes
The video camera system is operating correctly at this time. The video camera feature concern was caused by the feature being disabled. INSTRUCT the customer on how to enable the video camera features, REFER to the Owner's Literature.
No
GO to E5.
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E5 VERIFY VEHICLE EQUIPMENT - NAVIGATION
- Check the vehicle for navigation.
- Is the vehicle equipped with navigation?
Yes
GO to E10.
No
GO to E6.
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E6 CHECK THE AUTO-DIMMING INTERIOR MIRROR
- Observe the auto-dimming interior mirror.
- Select PARK.
- Select REVERSE.
- Does the auto-dimming interior mirror momentarily display a blue screen then turn off?
Yes
The auto-dimming interior mirror is functional. There is no signal from the video camera. GO to E11.
No
GO to E7.
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E7 CHECK THE COMPASS FOR CORRECT OPERATION
- NOTE: The auto-dimming interior mirror uses the LIN for compass messaging along with messaging for the video camera operation.
- Verify the compass operates correctly.
- Does the compass operate correctly?
Yes
GO to E8.
No
REFER to Instrumentation, Message Center, and Warning Chimes Testing and Inspection to diagnose the compass.
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E8 CHECK THE AUTO-DIMMING INTERIOR MIRROR VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Auto-Dimming Interior Mirror C9039.
- Ignition ON.
- Measure the voltage between the auto-dimming interior mirror C9039-1, circuit CBP32 (GN/VT), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to E9.
No
VERIFY the BCM fuse 32 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short. TEST the system for normal operation. Diagrams By Number
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E9 CHECK THE AUTO-DIMMING INTERIOR MIRROR GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Measure the resistance between the auto-dimming interior mirror C9039-4, circuit GD133 (BK), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
INSTALL a new auto-dimming interior mirror. REFER to Rear View Mirrors Interior Rear View Mirror. CONNECT the negative battery cable. TEST the system for normal operation.
No
REPAIR the circuit. CONNECT the negative battery cable. TEST the system for normal operation.
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E10 CHECK THE FDIM DISPLAY
- Observe the FDIM while placing the vehicle in reverse.
- While selecting reverse and waiting 30 seconds, does the FDIM screen switch to video camera mode and display PLEASE CHECK SURROUNDINGS FOR SAFETY?
Yes
The FDIM display is functional. There is no signal from the video camera. GO to E11.
No
RETRIEVE and FOLLOW ACM DTCs. REFER to Information and Entertainment Systems Audio Control Module (ACM).
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E11 CHECK THE VIDEO SIGNAL CIRCUITS INTEGRITY
- Ignition OFF.
- Disconnect: Auto-Dimming Interior Mirror (Without Navigation) C9039.
- Disconnect: FDIM (With Navigation) C2123.
- For vehicles without navigation, measure the resistance between the auto-dimming interior mirror C9039-8, circuit VMP19 (WH/GN), harness side and the auto-dimming interior mirror C9039-16, circuit RMP19 (BN/VT), harness side.
- For vehicles with navigation, measure the resistance between the FDIM C2123-3, circuit VMP19 (WH/GN), harness side and the FDIM C2123-9, circuit RMP19 (BN/VT), harness side.
- Is the resistance between 74 and 106 ohms?
Yes
GO to E12.
No
GO to E14.
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E12 CHECK THE VIDEO CAMERA VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
- Disconnect: Video Camera C4357.
- Ignition ON.
- Measure the voltage between the video camera C4357-1, circuit CBP34 (VT/BN), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to E13.
No
VERIFY the BCM fuse 34 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short. TEST the system for normal operation. Diagrams By Number
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E13 CHECK THE VIDEO CAMERA GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Measure the voltage between the video camera C4357-1, circuit CBP34 (VT/BN), harness side and the video camera C4357-5, circuit GD120 (BK/GN), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to E14.
No
REPAIR circuit GD120 (BK/GN) for an open. TEST the system for normal operation.
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E14 CHECK THE VIDEO CAMERA SIGNAL CIRCUITS FOR A SHORT TO GROUND
- Disconnect: Video Camera C4357.
- Measure the resistance between the video camera C4357-4, circuit VMP19 (WH/GN), harness side and ground; and between the video camera C4357-3, circuit RMP19 (BN/VT), harness side and ground.
- Are the resistances greater than 10,000 ohms?
Yes
GO to E15.
No
REPAIR the circuit in question. TEST the system for normal operation.
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E15 CHECK THE VIDEO CAMERA VIDEO SIGNAL CIRCUITS FOR A SHORT TO VIDEO SHIELD
- Measure the resistance between the video camera C4357-4, circuit VMP19 (WH/GN), harness side and the video camera C4357-6, circuit DMN19 (BK), harness side.
- Measure the resistance between the video camera C4357-3, circuit RMP19 (BN/VT), harness side and the video camera C4357-6, circuit DMN19 (BK), harness side.
- Are the resistances greater than 10,000 ohms?
Yes
GO to E16.
No
REPAIR the circuit in question. TEST the system for normal operation.
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E16 CHECK THE VIDEO CAMERA VIDEO SIGNAL CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition ON.
- Measure the voltage between the video camera C4357-4, circuit VMP19 (WH/GN), harness side and ground; and between the video camera C4357-3, circuit RMP19 (BN/VT), harness side and ground.
- Is any voltage present?
Yes
REPAIR the circuit in question. TEST the system for normal operation.
No
GO to E17.
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E17 CHECK VIDEO SIGNAL CIRCUITS FOR AN OPEN
- Ignition OFF.
- Connect a fused jumper wire between the video camera C4357-4, circuit VMP19 (WH/GN), harness side and the video camera C4357-3, circuit RMP19 (BN/VT), harness side.
- For vehicles without navigation, measure the resistance between the auto-dimming interior mirror C9039-8, circuit VMP19 (WH/GN), harness side and the auto-dimming interior mirror C9039-16, circuit RMP19 (BN/VT), harness side.
- For vehicles with navigation, measure the resistance between the FDIM C2123-3, circuit VMP19 (WH/GN), harness side and the FDIM C2123-9, circuit RMP19 (BN/VT), harness side.
- Is the resistance less than 5 ohms?
Yes
REMOVE the jumper wire. GO to E19.
No
REMOVE the jumper wire. GO to E18.
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E18 CHECK VIDEO (+) SIGNAL CIRCUIT FOR AN OPEN
- For vehicles without navigation, measure the resistance between the auto-dimming interior mirror C9039-8, circuit VMP19 (WH/GN), harness side and the video camera C4357-4, circuit VMP19 (WH/GN), harness side.
- For vehicles with navigation, measure the resistance between the FDIM C2123-3, circuit VMP19 (WH/GN), harness side and the video camera C4357-4, circuit VMP19 (WH/GN), harness side.
- Is the resistance less than 5 ohms?
Yes
REPAIR circuit RMP19 (BN/VT). TEST the system for normal operation.
No
REPAIR circuit VMP19 (WH/GN). TEST the system for normal operation.
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E19 CHECK THE LIN CIRCUIT FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: Video Camera C4357.
- Disconnect: BCM C2280C.
- Ignition ON.
- Measure the voltage between the video camera C4357-2, circuit VDN03 (GY/VT), harness side and ground.
- Is any voltage present?
Yes
REPAIR the circuit. TEST the system for normal operation.
No
GO to E20.
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E20 CHECK THE LIN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between the video camera C4357-2, circuit VDN03 (GY/VT), harness side and the BCM C2280C-12, circuit VDN03 (GY/VT), harness side; and between the video camera C4357-2, circuit VDN03 (GY/VT), harness side and ground.
- Is resistance less than 5 ohms between the video camera and BCM; and greater than 10,000 ohms between the video camera and ground?
Yes
GO to E21.
No
REPAIR the circuit. TEST the system for normal operation.
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E21 CHECK FOR CORRECT VIDEO CAMERA OPERATION
- Connect: All Disconnected Connectors.
- Disconnect the video camera connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the video camera connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new video camera. REFER to Video Camera Service and Repair. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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