B109E

B109E-PANEL MODE DOOR 2 CONTROL CIRCUIT OPEN (ATC)

B109E - Panel Mode Door 2 Control Circuit Open (ATC):

WHEN MONITORED
When actuator movement is requested.

SET CONDITION
If the (C139) Second Row Mode Door Driver circuit or the (C939) Second Row Mode Door Common Driver circuit is open.

POSSIBLE CAUSES
- (C139) second row mode door driver circuit open
- (C939) second row mode door common driver circuit open
- Second row mode door actuator
- A/C heater control

Diagnostic Test

1. CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE DTCs

Turn the ignition on.
With the scan tool, read active HVAC DTCs.

Q: Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE DTCs?

YES: Diagnose and repair the DTC(s). Refer to Trouble Code Diagnostic Charts for a complete list of HVAC related symptoms.
NO: Go To 2




2. CHECK THE SECOND ROW MODE DOOR ACTUATOR CIRCUIT RESISTANCE

Turn the ignition off.
Disconnect the A/C Heater Control C2 harness connector.
Measure the resistance between the (C139) Second Row Mode Door Driver circuit and the (C939) Second Row Mode Door Common Driver circuit in the A/C Heater Control C2 harness connector.

Q: 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 (C139) SECOND ROW MODE DOOR DRIVER CIRCUIT FOR AN OPEN

Disconnect the Second Row Mode Door Actuator harness connector.
Measure the resistance of the (C139) Second Row Mode Door Driver circuit between the Second Row Mode Door Actuator harness connector and the A/C Heater Control C2 harness connector.

Q: Is the resistance below 5.0 ohms?

YES: Go To 4
NO: Repair the (C139) Second Row Mode Door Driver circuit for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test




4. CHECK THE (C939) SECOND ROW MODE DOOR COMMON DRIVER CIRCUIT FOR AN OPEN

Measure the resistance of the (C939) Second Row Mode Door Common Driver circuit between the Second Row Mode Door Actuator harness connector and the A/C Heater Control C2 harness connector.

Q: Is the resistance below 5.0 ohms?

NO: Replace the Second Row Mode Door Actuator. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
YES: Repair the (C939) Second Row Mode Door Common Driver circuit for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test