B10A5
B10A5-LEFT BLEND DOOR CONTROL CIRCUIT OPEN (ATC)
For a complete wiring diagram Refer to Diagrams/Electrical.
- When Monitored:
When actuator movement is requested.
- Set Condition:
If the (C255) Left Blend Door Driver circuit or the (C55) Left Blend Door Common Driver circuit is open.
Diagnostic Test
1.CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE DTCs
Turn the ignition on.
With the scan tool, read active HVAC DTCs.
Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE DTCs?
Yes
- Diagnose and repair the DTC(s).
No
- Go To 2
2.CHECK THE LEFT BLEND DOOR ACTUATOR CIRCUIT RESISTANCE
Turn the ignition off.
Disconnect the A/C Heater Control C2 harness connector.
Measure the resistance between the (C255) Left Blend Door Driver circuit and the (C55) Left Blend Door Common Driver circuit in the A/C Heater Control C2 harness connector.
Is the resistance above 70.0 ohms?
Yes
- Go To 3
No
- Replace the A/C Heater Control.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
3.CHECK THE (C255) LEFT BLEND DOOR DRIVER CIRCUIT FOR AN OPEN
Disconnect the Left Blend Door Actuator harness connector.
Measure the resistance of the (C255) Left Blend Door Driver circuit between the Left Blend Door Actuator harness connector and the A/C Heater Control C2 harness connector.
Is the resistance below 5.0 ohms?
Yes
- Go To 4
No
- Repair the (C255) Left Blend Door Driver circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
4.CHECK THE (C55) LEFT BLEND DOOR COMMON DRIVER CIRCUIT FOR AN OPEN
Measure the resistance of the (C55) Left Blend Door Common Driver circuit between the Left Blend Door Actuator harness connector and the A/C Heater Control C2 harness connector.
Is the resistance below 5.0 ohms?
Yes
- Replace the Left Blend Door Actuator.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
No
- Repair the (C55) Left Blend Door Common Driver circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test