Chrysler Voyager. Manual — part 272

Symptom List:

ACT CKT TEST PASSED, OVERCURRENT DTCS ACTIVE - MTC
BLEND CIRCUIT SHORTED TO GROUND - MTC
BLEND CIRCUIT SHORTED TO IGN OR BATT - MTC
COMMON DRIVER SHORTED TO GROUND - MTC
COMMON DRIVER SHORTED TO IGN OR BATT - MTC
MODE CIRCUIT SHORTED TO GROUND - MTC
MODE CIRCUIT SHORTED TO IGN OR BATT - MTC
REAR BLEND CIRCUIT SHORTED TO GROUND - MTC
REAR BLEND CIRCUIT SHORTED TO IGN OR BATT - MTC
REAR MODE CIRCUIT SHORTED TO GROUND - MTC
REAR MODE CIRCUIT SHORTED TO IGN OR BATT - MTC
RECIRC CIRCUIT SHORTED TO GROUND - MTC
RECIRC CIRCUIT SHORTED TO IGN OR BATT - MTC
SHORT TOO COMPLEX - MTC
ZONE CIRCUIT SHORTED TO GROUND - MTC
ZONE CIRCUIT SHORTED TO IGN OR BATT - MTC

Test Note:

All symptoms listed above are diagnosed using the same tests.

The title for the tests will be ACT CKT TEST PASSED, OVER-
CURRENT DTCS ACTIVE - MTC.

When Monitored and Set Condition:

ACT CKT TEST PASSED, OVERCURRENT DTCS ACTIVE - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

If two or more drivelines shorted together.

BLEND CIRCUIT SHORTED TO GROUND - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects a short low on the

Passenger Blend Door Driver circuit.

BLEND CIRCUIT SHORTED TO IGN OR BATT - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects a short high on

the Passenger Blend Door Driver circuit.

COMMON DRIVER SHORTED TO GROUND - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects a short low on the

Common Door Driver circuit.

515

HEATING & A/C

COMMON DRIVER SHORTED TO IGN OR BATT - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects a short high on

the Common Door Driver circuit.

MODE CIRCUIT SHORTED TO GROUND - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects a short low on the

Mode Door Driver circuit.

MODE CIRCUIT SHORTED TO IGN OR BATT - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects a short high on

the Mode Door Driver circuit.

REAR BLEND CIRCUIT SHORTED TO GROUND - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects a short low on the

Rear Blend Door Driver circuit.

REAR BLEND CIRCUIT SHORTED TO IGN OR BATT - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects a short high on

the Rear Blend Door Driver circuit.

REAR MODE CIRCUIT SHORTED TO GROUND - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects a short low on the

Rear Mode Door Driver circuit.

REAR MODE CIRCUIT SHORTED TO IGN OR BATT - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects a short high on

the Rear Mode Door Driver circuit.

RECIRC CIRCUIT SHORTED TO GROUND - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects a short low on the

Recirculation Door Driver circuit.

516

HEATING & A/C

ACT CKT TEST PASSED, OVERCURRENT DTCS ACTIVE - MTC —

Continued

RECIRC CIRCUIT SHORTED TO IGN OR BATT - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects a short high on

the Recirculation Door Driver circuit.

SHORT TOO COMPLEX - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects more than three

drivers being shorted in the same direction (for example, four drivers, all shorted to
ground) or if two or more drivers are shorted with at least one driver shorted to
ignition/battery and one driver shorted to ground.

ZONE CIRCUIT SHORTED TO GROUND - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects a short low on the

Driver (Zone) Blend Door Driver circuit.

ZONE CIRCUIT SHORTED TO IGN OR BATT - MTC

When Monitored:

When the Actuator Circuit Test is executed.

Set Condition:

This message will set if the A/C - Heater Control detects a short high on

the Driver (Zone) Blend Door Driver circuit.

POSSIBLE CAUSES

DOOR DRIVER CIRCUIT SHORTED LOW

DOOR ACTUATOR SHORTED

DOOR DRIVER CIRCUIT SHORTED HIGH

A/C - HEATER CONTROL MODULE

INTERMITTENT WIRING PROBLEM

DOOR DRIVER CIRCUITS SHORTED HIGH

DOOR DRIVER CIRCUITS SHORTED LOW

DOOR DRIVER CIRCUITS SHORTED TOGETHER

DOOR DRIVER CIRCUITS SHORTED TO COMMON DOOR DRIVER CIRCUIT

DOOR ACTUATORS SHORTED

A/C - HEATER CONTROL MODULE

INTERMITTENT WIRING PROBLEM

517

HEATING & A/C

ACT CKT TEST PASSED, OVERCURRENT DTCS ACTIVE - MTC —

Continued

TEST

ACTION

APPLICABILITY

1

CAUTION: Shorted rear door driver circuits can cause additional Actuator
Circuit Test messages to set for circuits where no condition exists to cause
a fault.
CAUTION: To ensure a proper diagnosis, repair all Short Too Complex
messages first, all rear door driver ckt related msgs second, all common
door driver ckt related msgs third, and all front door driver ckt related
msgs last.
CAUTION: The DRBIII

t can display up to three Actuator Circuit Test

messages at a time. After repairing each Actuator Circuit Test message,
cycle the ignition switch, then rerun the Actuator Circuit Test to ensure no
new messages exist.
CAUTION: If Overcurrent DTCs are active and the DRBIII

t displays

Actuator Circuit Test Passed, proceed to Act Ckt Test Pass, Overcurrent
DTCs Activ when asked Which Actuator Circuit Test Message Is Present.
Which Actuator Circuit Test message is present?

All

XXX Driver/Ckt Short to Gnd

Go To

2

XXX Driver/Ckt Short to Ign or Batt

Go To

4

Short Too Complex

Go To

6

XXX Drv/Ckt Short to Gnd & to Ign or Bat

Go To

8

Act Ckt Test Pass, Overcurrent DTCs Acti

Go To

8

2

Turn the ignition off.
Disconnect the A/C - Heater Control C1 harness connector.
Measure the resistance between ground and the applicable door driver circuit.
Is the resistance below 10K ohms?

All

Yes

→ Repair the door driver circuit for a short to ground.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 3

3

Turn the ignition off.
Disconnect the A/C - Heater Control C1 harness connector.
For a door actuator in the front A/C - heater housing assembly, measure the
resistance between the Common Door Driver circuit and the applicable door driver
circuit.
For a door actuator in the rear A/C - heater housing assembly, measure the resistance
between the Rear Common Door Driver circuit and the applicable door driver circuit.
Is the resistance below 30.0 ohms?

All

Yes

→ Replace the door actuator in accordance with the Service Infor-

mation.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 5

518

HEATING & A/C

ACT CKT TEST PASSED, OVERCURRENT DTCS ACTIVE - MTC —

Continued