B10A5

B10A5-LEFT BLEND DOOR CONTROL CIRCUIT OPEN





For a complete wiring diagram Consult Diagrams/Electrical.

Theory of Operation

The A/C Heater Control drives the Left Blend Door Actuator via the (C61) Left Blend Door Driver circuit and the (C34) Common Door Driver circuit.

- When Monitored:
With the ignition on.

- Set Condition:
If the Left Blend Door Actuator's electrical circuit is open.





Diagnostic Test

1. ACTIVE DTC(S) PRESENT
Turn the ignition on.
Using the A/C Heater Control, actuate the Left Blend Door.
With the scan tool, check for DTCs.
Does the scan tool display this DTC as active?

Yes

- Go to 2

No

- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

2. CHECK (C34) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN




Turn the ignition off.
Disconnect the A/C Heater Control C1 harness connector.
Disconnect the Left Blend Door Actuator harness connector.
Measure the resistance of the (C34) Common Door Driver circuit between the A/C Heater Control C1 harness connector and the Left Blend Door Actuator harness connector.
Does the ohm meter read open circuit?

Yes

- Repair the (C34) Common Door Driver circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Go to 3

3. CHECK (C61) LEFT BLEND DOOR DRIVER CIRCUIT FOR AN OPEN




Measure the resistance of the (C61) Driver Blend Door Driver circuit between the A/C Heater Control C1 way harness connector and the Left Blend Door Actuator harness connector.
Does the ohm meter read open circuit?

Yes

- Repair the (C61) Driver Blend Door Driver circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Go to 4.

4. CHECK LEFT BLEND DOOR ACTUATOR CIRCUIT RESISTANCE




Reconnect the Left Blend Door Actuator harness connector.
Measure the resistance between the (C61) Driver Blend Door Driver circuit and the (C34) Common Door Driver circuit in the A/C Heater Control C1 harness connector.
Is the resistance between 30 and 40 ohms?

Yes

- Replace the A/C Heater Control.

No

- Replace the Mode Door Actuator.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.