42–SECOND ROW MODE OVERCURRENT (MTC)

For a complete wiring diagram Refer to Section 8W.

When Monitored:
When actuator movement is requested.
Set Condition:
If the A/C Heater Control detects an excessive current draw on any of the door driver circuits while attempting to drive this door actuator. Note that only one overcurrent DTC can set per ignition cycle.

Possible Causes

DOOR DRIVER CIRCUIT(S) SHORTED TO VOLTAGE

DOOR DRIVER CIRCUIT(S) SHORTED TO GROUND

DOOR DRIVER CIRCUITS SHORTED TOGETHER

FRONT MODE DOOR ACTUATOR

SECOND ROW MODE DOOR ACTUATOR

LEFT BLEND DOOR ACTUATOR

RECIRCULATION DOOR ACTUATOR

A/C HEATER CONTROL

NOTE: This DTC must be active for the result of this test to be valid. Do not perform this test if this DTC is stored. Refer to HVAC System Test (MTC) for stored DTC test procedures.

Diagnostic Test

1.RUN THE ACTUATOR CIRCUIT TEST / DOOR CALIBRATION FUNCTION & THEN CHECK FOR ACTUATOR CIRCUIT TEST FAULTS

NOTE: Diagnose and repair Actuator Circuit Test faults (DTC 61, 62, 63, 64, 65, 66, 67, 68, 69, 71, and 72) before diagnosing Overcurrent faults (DTC 41, 42, 43, and 44).

Turn the blower control on.
Press the A/C mode switch down, turn the blower control to off, wait until both LEDs illuminate (approximately 5 seconds) and then release the A/C mode switch.
When the A/C status indicator begins displaying DTCs, set the Mode switch to the floor position, simultaneously press the A/C mode switch and the EBL mode switch down until both LEDs start flashing (approximately 5 seconds) and then release the mode switches. Stored DTCs will clear from memory in approximately two seconds.

Turn the blower control off.
Press and hold the EBL mode switch down and then turn the blower control on. Continue to hold the EBL mode switch down until the EBL status indicator begins flashing. Then, release the EBL mode switch. While the test / function is running, the EBL status indicator will flash once per second. If the test / function passes, the EBL status indicator will stop flashing. If the test / function fails, the A/C and EBL status indicators will flash alternately. Allow the test / function to run to completion before proceeding.

Turn the blower control on.
Press the A/C mode switch down, turn the blower control to off, wait until both LEDs illuminate (approximately 5 seconds) and then release the A/C mode switch.

NOTE: The A/C status indicator displays active DTCs when the EBL status indicator is not illuminated and stored DTCs when the EBL status indicator is illuminated.

Does the A/C status indicator display any of the following DTCs: 61, 62, 63, 64, 65, 66, 67, 68, 69, 71, or 72?

Yes

As present, diagnose and repair the Actuator Circuit Test faults in the following order: DTC 72 first, then DTC 62, then DTC 61, then DTCs 64, 66, 68, or 71, and finally DTCs 63, 65, 67, or 69. Refer to the Table Of Contents in this section for a complete list of HVAC related symptoms.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

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2.CHECK THE (C266) FRONT MODE DOOR DRIVER CIRCUIT FOR A SHORT TO THE (C139) SECOND ROW MODE DOOR DRIVER CIRCUIT, (C939) SECOND ROW MODE DOOR COMMON DRIVER CIRCUIT, (C255) LEFT BLEND DOOR DRIVER CIRCUIT, (C55) LEFT BLEND DOOR COMMON DRIVER CIRCUIT, (C268) RECIRCULATION DOOR DRIVER CIRCUIT, & THE (C68) RECIRCULATION DOOR COMMON DRIVER CIRCUIT