Pinpoint Test E: The Rear Video Does Not Operate Correctly
Parking Aid - Video
Pinpoint Test E: The Rear Video Does Not Operate Correctly
Normal Operation
When the ignition switch is in the RUN position, the rear 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 (Body Control Module) sends a reverse signal message to the Audio Front Control Module (ACM) over the Medium Speed Controller Area Network (MS-CAN), enabling the system. The video signal from the rear 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 (Body Control Module) when there is a LIN (Local Interconnect Network) communication fault from the rear video camera.
- DTC C1001:01 (Vision System Camera: General Electrical Failure)- a continuous DTC that sets in the ACM (Audio Front Control Module) when no video signal is detected from the rear video camera when the vehicle is in reverse.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Rear video camera
- Camera switching module (with front camera)
- Auto-dimming interior mirror (without navigation)
- Front Display Interface Module (FDIM) (with navigation)
- BCM (Body Control Module)
PINPOINT TEST E : THE REAR VIDEO DOES NOT OPERATE CORRECTLY
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.
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 rear video camera system and verify the rear video camera image.
Is the rear 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 rear video camera lens.
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 Lighting and Horns.
E3 CHECK THE DTCs FROM THE BCM (Body Control Module) SELF-TEST
- Check the BCM (Body Control Module) DTCs from the self-test.
Are any BCM (Body Control Module) DTCs retrieved?
Yes
For BCM (Body Control Module) DTC B115E:08, GO to E19.
For all other DTCs, REFER to DTC Charts. Parking Aid - Video
No
For an inoperative rear video camera feature concern, GO to E4. Otherwise, GO to E5
E4 VERIFY AND ENABLE THE INOPERATIVE REAR VIDEO CAMERA FEATURE
- Verify and enable the inoperative rear video camera feature within the FDIM (Front Display Interface Module) (with navigation) or message center (without navigation).
Does the rear video camera feature operate correctly?
Yes
The rear video camera system is operating correctly at this time. The rear video camera feature concern was caused by the feature being disabled. INSTRUCT the customer on how to enable the rear video camera features, REFER to the Owner's Literature.
No
GO to E5.
E5 VERIFY VEHICLE EQUIPMENT - NAVIGATION
- Check the vehicle for navigation.
Is the vehicle equipped with navigation?
Yes
GO to E10.
No
GO to E6.
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 rear video camera. GO to E11.
No
GO to E7.
E7 CHECK THE COMPASS FOR CORRECT OPERATION
- NOTE: The auto-dimming interior mirror uses the LIN (Local Interconnect Network) for compass messaging along with messaging for the rear video camera operation.
Verify the compass operates correctly.
Does the compass operate correctly?
Yes
GO to E8.
No
REFER to Instrument Panel, Gauges and Warning Indicators to diagnose the compass.
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 (Body Control Module) 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 [1][2]Diagrams By Number. TEST the system for normal operation.
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. 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.
E10 CHECK THE FDIM (Front Display Interface Module) DISPLAY
- Observe the FDIM (Front Display Interface Module) while placing the vehicle in reverse.
While selecting reverse and waiting up to 30 seconds, does the FDIM (Front Display Interface Module) screen switch to rear video camera mode and display "Please Contact Your Dealership"?
Yes
The FDIM (Front Display Interface Module) display is functional. There is no signal from the rear video camera. GO to E11.
No
RETRIEVE and FOLLOW ACM (Audio Front Control Module) DTCs. REFER to Accessories and Optional Equipment.
E11 CHECK THE VIDEO SIGNAL CIRCUITS INTEGRITY
- Ignition OFF.
- Disconnect: Auto-Dimming Interior Mirror (Without Navigation) C9039.
- Disconnect: FDIM (Front Display Interface Module) (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 (Front Display Interface Module) C2123-3, circuit VMP19 (WH/GN), harness side and the FDIM (Front Display Interface Module) C2123-9, circuit RMP19 (BN/VT), harness side.
Is the resistance between 74 and 106 ohms?
Yes
GO to E12.
No
GO to E14.
E12 CHECK THE REAR VIDEO CAMERA VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
- Disconnect: Rear Video Camera C4357.
- Ignition ON.
- Measure the voltage between the rear 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 (Body Control Module) 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 [1][2]Diagrams By Number. TEST the system for normal operation.
E13 CHECK THE REAR VIDEO CAMERA GROUND CIRCUIT FOR AN OPEN
- Ignition OFF.
- Measure the voltage between the rear video camera C4357-1, circuit CBP34 (VT/BN), harness side and the rear 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.
E14 CHECK THE REAR VIDEO CAMERA SIGNAL CIRCUITS FOR A SHORT TO GROUND
- Disconnect: Rear Video Camera C4357.
- Measure the resistance between the rear video camera C4357-4, circuit VMP19 (WH/GN), harness side and ground; and between the rear 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.
E15 CHECK THE REAR VIDEO CAMERA VIDEO SIGNAL CIRCUITS FOR A SHORT TO VIDEO SHIELD
- Measure the resistance between the rear video camera C4357-4, circuit VMP19 (WH/GN), harness side and the rear video camera C4357-6, circuit DMP19 (BK), harness side.
- Measure the resistance between the rear video camera C4357-3, circuit RMP19 (BN/VT), harness side and the rear video camera C4357-6, circuit DMP19 (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.
E16 CHECK THE REAR VIDEO CAMERA VIDEO SIGNAL CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition ON.
- Measure the voltage between the rear video camera C4357-4, circuit VMP19 (WH/GN), harness side and ground; and between the rear 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.
E17 CHECK VIDEO SIGNAL CIRCUITS FOR AN OPEN
- Ignition OFF.
- Connect a fused jumper wire between the rear video camera C4357-4, circuit VMP19 (WH/GN), harness side and the rear 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 (Front Display Interface Module) C2123-3, circuit VMP19 (WH/GN), harness side and the FDIM (Front Display Interface Module) 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.
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 rear video camera C4357-4, circuit VMP19 (WH/GN), harness side.
- For vehicles with navigation, measure the resistance between the FDIM (Front Display Interface Module) 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.
E19 CHECK THE LIN (Local Interconnect Network) CIRCUIT FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: Rear Video Camera C4357.
- Disconnect: BCM (Body Control Module) C2280C.
- Ignition ON.
- Measure the voltage between the rear 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.
E20 CHECK THE LIN (Local Interconnect Network) CIRCUIT FOR AN OPEN OR SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between the rear video camera C4357-2, circuit VDN03 (GY/VT), harness side and the BCM (Body Control Module) C2280C-12, circuit VDN03 (GY/VT), harness side; and between the rear video camera C4357-2, circuit VDN03 (GY/VT), harness side and ground.
Is resistance less than 5 ohms between the rear video camera and BCM (Body Control Module) ; and greater than 10,000 ohms between the rear video camera and ground?
Yes
GO to E21.
No
REPAIR the circuit. TEST the system for normal operation.
E21 CHECK FOR CORRECT REAR VIDEO CAMERA OPERATION
- Connect: All Disconnected Connectors.
- Disconnect the rear video camera connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the rear 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 rear video camera. REFER to Video Camera - Rear . 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.