Mirror Power Circuit Short To Ground

MIRROR POWER CIRCUIT SHORT TO GROUND





For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
With the ignition on.

- Set Condition:
The Hands Free Module detects a fault on the (F316) Fused Accessory Relay Output Circuit.





Diagnostic Test

1. VERIFY ACTIVE DTC
Turn the ignition on.
With the scan tool, erase DTCs.
Attempt to make a phone call using the system.
With the scan tool, read DTCs.
Does the scan tool display this DTC?

Yes

- Go To2

No

- Go To7

2. (F316) FUSED ACCESSORY RELAY OUTPUT OPEN




Turn the ignition off.
Disconnect the Rear View Mirror harness connectors (automatic day/night mirror).
Disconnect the Hands Free Module harness connector.
Measure the resistance of the (F316) Fused Accessory Relay Output circuit.
Is the resistance below 10.0 ohms?

Yes

- Go To3

No

- Repair the (F316) Fused Accessory Relay Output circuit for an open.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

3. (F316) FUSED ACCESSORY RELAY OUTPUT CIRCUIT SHORT TO GROUND




Turn the ignition off.
Disconnect the Rear View Mirror harness connectors (automatic day/night mirror).
Disconnect the Hands Free Module harness connector.
Measure the resistance between ground and the (F316) Fused Accessory Relay Output circuit.
Is the resistance above 1000.0 ohms?

Yes

- Go To4

No

- Repair the (F316) Fused Accessory Relay Output circuit for a short to ground.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

4. (F316) FUSED ACCESSORY RELAY OUTPUT CIRCUIT SHORT TO VOLTAGE




Turn the ignition off.
Disconnect the Rear View Mirror harness connectors (automatic day/night mirror).
Disconnect the Hands Free Module harness connector.
Turn the ignition on.
Measure the voltage of the (F316) Fused Accessory Relay Output circuit.
Is the voltage below 1.0 volt?

Yes

- Go To5

No

- Repair the (F316) Fused Accessory Relay Output circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

5. (F316) FUSED ACCESSORY RELAY OUTPUT CIRCUIT SHORT TO OTHER CIRCUITS




Turn the ignition off.
Disconnect the Rear View Mirror harness connectors (automatic day/night mirror).
Disconnect the Hands Free Module harness connector.
Measure the resistance between the (F316) Fused Accessory Relay Output circuit and each of the other circuits in the rear view mirror connectors.
Is the resistance above 1000 ohms for each measurement?

Yes

- Go To6

No

- Repair the (F316) Fused Accessory Relay Output circuit for a short to other circuits.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

6. REAR VIEW MIRROR
Replace the Rear View Mirror.
Turn the ignition on.
With the scan tool, erase the DTC's.
Attempt to make a phone call using the system.
With the scan tool, read DTCs.
Does the scan tool display this DTC?

Yes

- Inspect the wiring and connectors for damage or shorted circuits. Repair as necessary. If ok, replace and program the Hands Free Module .
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Test complete.

7. INTERMITTENT CONDITION

NOTE: The conditions that set the DTC are not present at this time. The following list may help in identifying the intermittent condition.

With the engine running at normal operating temperature, wiggle the wiring harnesses. This is to try and duplicate the failure.
Search for any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
Were any of the above conditions present?

Yes

- Repair as necessary.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Test complete.