Pinpoint Test G: The Rear Video Is Inoperative
Parking Aid - Video
Pinpoint Test G: The Rear Video Is Inoperative
Refer to Wiring Diagram Set 131, Parking Aid for schematic and connector information Electrical Diagrams.
Normal Operation
When the ignition switch is in the RUN position, the video camera receives voltage. With the gear selector in reverse, the Accessory Protocol Interface Module (APIM) receives the reverse signal from the Body Control Module (BCM) over the Medium Speed Controller Area Network (MS-CAN), enabling the system. The video camera also receives the reverse signal message from BCM (Body Control Module) over the Local Interconnect Network (LIN). The LIN (Local Interconnect Network) is a dedicated single wire communication line that sends and receives network messages from the BCM (Body Control Module) to the video camera. A pair of shielded wires carries the video signal from the video camera to the APIM (Accessory Protocol Interface Module). The APIM (Accessory Protocol Interface Module) sends the video signal to the Front Display Interface Module (FDIM) and displays a video image of the area behind the vehicle.
- 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 video camera.
- DTC C1001:01 (Vision System Camera: General Electrical Failure)- a continuous DTC that sets in the APIM (Accessory Protocol Interface Module) 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:
- Wiring, terminals or connectors
- Video camera
- APIM (Accessory Protocol Interface Module)
- BCM (Body Control Module)
PINPOINT TEST G : 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.
G1 CHECK THE DTCs FROM THE BCM (Body Control Module) AND APIM (Accessory Protocol Interface Module) SELF-TEST
- Check the BCM (Body Control Module) and APIM (Accessory Protocol Interface Module) DTCs from the self-test.
Are any BCM (Body Control Module) or APIM (Accessory Protocol Interface Module) DTCs retrieved?
Yes
For BCM (Body Control Module) DTC B115E:08, GO to G14.
For APIM (Accessory Protocol Interface Module) DTC C1001:01, GO to G6.
For all other DTCs, REFER to DTC Charts Parking Aid - Video.
No
For an inoperative video camera feature concern, GO to G2. Otherwise, GO to G3.
G2 VERIFY AND ENABLE THE INOPERATIVE VIDEO CAMERA FEATURE
- Verify and enable the inoperative video camera feature within the FDIM (Front Display Interface Module).
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 G3.
G3 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 G4.
No
The system is operating correctly at this time. The concern was caused by a dirty video camera lens.
G4 CHECK THE REVERSING LAMPS OPERATION
- Check the operation of the reversing lamps.
Do the reversing lamps operate correctly?
Yes
GO to G5.
No
REFER to Lighting and Horns.
G5 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 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 video camera. GO to G6.
No
RETRIEVE and FOLLOW APIM (Accessory Protocol Interface Module) DTCs. REFER to Accessories and Optional Equipment.
G6 CHECK THE VIDEO SIGNAL CIRCUITS INTEGRITY
- Ignition OFF.
- Disconnect: APIM (Accessory Protocol Interface Module) C2383.
- Measure the resistance between the APIM (Accessory Protocol Interface Module) C2383-14, circuit VMP19 (WH/GN), harness side and the APIM (Accessory Protocol Interface Module) C2383-15, circuit RMP19 (BN/VT), harness side.
Is the resistance between 74 and 106 ohms?
Yes
GO to G7.
No
GO to G9.
G7 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 G8.
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 Electrical Diagrams.
TEST the system for normal operation.
G8 CHECK THE VIDEO CAMERA GROUND CIRCUIT FOR AN OPEN
- Measure the voltage between the video camera C4357-1, circuit CBP34 (VT/BN), harness side and the video camera C4357-5, circuit GD143 (BK/VT), harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to G9.
No
REPAIR circuit GD143 (BK/VT) for an open. TEST the system for normal operation.
G9 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 G10.
No
REPAIR the circuit in question. TEST the system for normal operation.
G10 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 (shield), 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 (shield), harness side.
Are the resistances greater than 10,000 ohms?
Yes
GO to G11.
No
REPAIR the circuit in question. TEST the system for normal operation.
G11 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 G12.
G12 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.
- Measure the resistance between the APIM (Accessory Protocol Interface Module) C2383-14, circuit VMP19 (WH/GN), harness side and the APIM (Accessory Protocol Interface Module) C2383-15, circuit RMP19 (BN/VT), harness side.
Is the resistance less than 5 ohms?
Yes
REMOVE the jumper wire. GO to G14.
No
REMOVE the jumper wire. GO to G13.
G13 CHECK VIDEO (+) SIGNAL CIRCUIT FOR AN OPEN
- Measure the resistance between the video camera C4357-4, circuit VMP19 (WH/GN), harness side and APIM (Accessory Protocol Interface Module) C2383-14, 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.
G14 CHECK THE LIN (Local Interconnect Network) CIRCUIT FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: Video Camera C4357.
- Disconnect: BCM (Body Control Module) 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 G15.
G15 CHECK THE LIN (Local Interconnect Network) 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 (Body Control Module) 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 (Body Control Module), and greater than 10,000 ohms between the video camera and ground?
Yes
GO to G16.
No
REPAIR the circuit. TEST the system for normal operation.
G16 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 . 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.