Rearview Camera Full Display Mirror Malfunction

Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach Diagnostic Procedure Instructions provides an overview of each diagnostic category Circuit/System Description If equipped, full display mirror provides a wider field of view than normally seen from the inside rearview mirror to assist when driving and changing lanes. When the tab under the inside rearview mirror is pulled rearward, a view of the area behind the vehicle displays on the mirror. The inside rearview camera full display mirror is connected to the outside rearview camera via a shielded coaxial cable. When the tab under the inside rearview mirror is pulled rearward, a view of the area behind the vehicle displays on the mirror. Adjust the rearview mirror for a clear view of the area behind the vehicle before turning on full display mirror. Use the button on the back of the mirror to adjust the brightness of the display. Make sure the light sensor is not covered when adjusting the brightness. Reference Information Schematic Reference Image Display Camera Schematics Connector End View Reference Master Electrical Component List Description and Operation Rearview Camera Full Display Mirror Description and Operation Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for scan tool information Circuit/System Verification

1. Verify there is no debris on the B352 Video Display Inside Rearview Mirror Camera lens, and the lens is not damaged or is not out of alignment. ⇒ If debris is found on the lens, or the lens is damaged, or the rearview camera is out of alignment Clean the lens. If the lens, replace as necessary, or adjust the mirror. ⇓ If there is no debris on the lens, or the lens is not damaged, or the rearview camera is not out of alignment
2. All OK. Circuit/System Testing
3. Ignition OFF/vehicle OFF, disconnect the X1 harness connector at the A10 Inside Rearview Mirror .
4. Test for less than 10 Ω between the A10 Inside Rearview Mirror ground circuit terminal 5 X1 and ground. ⇒ If 10 Ω or greater 2.1. Ignition OFF. 2.2. Test for less than 2 Ω in the ground circuit end to end. ⇒ If 2 Ω or greater, repair the open/high resistance in the circuit. ⇒ If less than 2 Ω, repair the open/high resistance in the ground connection. ⇓ If less than 10 Ω
5. Ignition ON.
6. Verify a test lamp illuminates between the ignition circuit terminal 2 X1 and ground. ⇒ If the test lamp does not illuminate and the circuit fuse is good 4.1. Ignition OFF. 4.2. Test for less than 2 Ω in the ignition circuit end to end. ⇒ If 2 Ω or greater, repair the open/high resistance in the circuit. ⇒ If less than 2 Ω, verify the fuse is OK and there is voltage at the fuse. Refer to Power Mode Mismatch. ⇒ If the test lamp does not illuminate and the circuit fuse is open 4.1. Ignition OFF. 4.2. Test for infinite resistance between the ignition circuit and ground. ⇒ If less than infinite resistance, repair the short to ground on the circuit. ⇒ If infinite resistance, replace the A10 Inside Rearview Mirror . ⇓ If the test lamp illuminates
7. Ignition OFF/vehicle OFF, connect the X1 harness connector at the A10 Inside Rearview Mirror .
8. Disconnect the coax cable connector at the A10 Inside Rearview Mirror and wait for 5 sec..
9. Ignition On/Vehicle in Service Mode, test for 7–11 V at the A10 Inside Rearview Mirror . ⇒ If the value outside range of 7–11V Test or replace the A10 Inside Rearview Mirror . ⇓ If the value within the range of 7–11 V
10. Ignition OFF/vehicle OFF, connect the coax cable connector at the A10 Inside Rearview Mirror .
11. Disconnect the coax cable connector at the B352 Video Display Inside Rearview Mirror Camera , and wait for 5 sec.
12. Ignition On/Vehicle in Service Mode, test for 7–11 V between the center conductor of the coax cable and the coax cable ground shield wires. ⇒ If the value within the range of 7–11 V Replace the B352 Video Display Inside Rearview Mirror Camera . ⇓ If the value outside range of 7–11V
13. Replace the coax cable. Component Testing

Caution

Refer to Test Probe Caution

Note

Before testing the coax cable, check the cable exterior for being pinched, cut, damaged, or having loose connections at the components, which can cause reception issues. To prevent false readings when testing the center coax terminals, use care not to ground the test probe on the outer housing/shield. Coax Cable Test

1. Locate the appropriate pinout adapter and load test loop adapter from EL-52552 COAX FAKRA Cable Adaptor Kit.
2. Connect the 2 adapters together, measure and record the resistance between the terminals at the pinout adapter.
3. Disconnect the 2 adapters and connect each one to the appropriate end of the coax cable.
4. At the pinout adapter test terminals, measure the total resistance of the coax cable loop including the connected load test adapter. ⇒ If not within 5 Ω of the reading from step 10. Replace the coax cable ⇓ If within 5 Ω of the reading from step 10.
5. All OK. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair procedure. Rearview Driver Information Camera Replacement Inside Rearview Mirror Replacement Control Module References for control module replacement, programming, and setup.