Chrysler Voyager. Manual — part 275

TEST

ACTION

APPLICABILITY

6

NOTE: After completing HVAC Door Recalibration, the DRBIII

t will store

the total span and the status of each door actuator. Selecting HVAC Door
Cal Monitor in System Tests will display this information.
With the DRBIII

t in HVAC, select System Tests, and then select HVAC Door Cal

Monitor.
Which message does the DRBIII

t display for Zone Status?

All

No Pulses

Go To

8

Too Few Pulses

Inspect the A/C - Heater Housing Assembly for a condition causing
the driver blend linkage/door to bind. Repair as necessary in
accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

Too Many Pulses

Remove door actuator from housing. By hand, attempt to rotate
actuator in both directions. Also, inspect for disconnected, miss-
ing, or broken door linkage, and a warped or broken door. Repair
as necessary in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

Broken Linkage

Remove door actuator from housing. By hand, attempt to rotate
actuator in both directions. Also, inspect for disconnected, miss-
ing, or broken door linkage, and a warped or broken door. Repair
as necessary in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

7

NOTE: After completing HVAC Door Recalibration, the DRBIII

t will store

the total span and the status of each door actuator. Selecting HVAC Door
Cal Monitor in System Tests will display this information.
With the DRBIII

t in HVAC, select System Tests, and then select HVAC Door Cal

Monitor.
Which message does the DRBIII

t display for Recirc Status?

All

No Pulses

Go To

8

Too Few Pulses

Inspect the A/C - Heater Housing Assembly for a condition causing
the recirculation linkage/door to bind. Repair as necessary in
accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

Too Many Pulses

Remove door actuator from housing. By hand, attempt to rotate
actuator in both directions. Also, inspect for disconnected, miss-
ing, or broken door linkage, and a warped or broken door. Repair
as necessary in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

Broken Linkage

Remove door actuator from housing. By hand, attempt to rotate
actuator in both directions. Also, inspect for disconnected, miss-
ing, or broken door linkage, and a warped or broken door. Repair
as necessary in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

527

HEATING & A/C

BLEND CALIBRATION FAULT - MTC —

Continued

TEST

ACTION

APPLICABILITY

8

Turn the ignition off.
Disconnect the A/C - Heater Control Module C1 harness connector.
Measure the resistance between the Common Door Driver circuit and the applicable
door driver circuit.
Is the resistance above 70.0 ohms?

All

Yes

→ Go To 9

No

→ Reconnect C1. Rerun Recalibration. If DRB displays same fault,

replace A/C-Htr Cntrl in accord with Service Info. If DRBIII
displays a different fault, ck wiring & connectors for cause of
intermittent condition. If no prob found, rerun test from Step 1.
Perform BODY VERIFICATION TEST - VER 1.

9

Turn the ignition off.
Disconnect the A/C - Heater Control Module C1 harness connector.
Remove the applicable door actuator from the A/C - Heater Housing Assembly.
Disconnect the door actuator harness connector.
Measure the resistance of the door driver circuit between the A/C - Heater Control
Module C1 harness connector and the door actuator harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 10

No

→ Repair the door driver circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

10

Turn the ignition off.
Disconnect the A/C - Heater Control Module C1 harness connector.
Remove the applicable door actuator from the A/C - Heater Housing Assembly.
Disconnect the door actuator harness connector.
Measure the resistance of the Common Door Driver circuit between the door actuator
harness connector and the A/C - Heater Control Module C1 harness connector.
Is the resistance below 5.0 ohms?

All

Yes

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

mation.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Repair the Common Door Driver circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

528

HEATING & A/C

BLEND CALIBRATION FAULT - MTC —

Continued

TEST

ACTION

APPLICABILITY

11

NOTE: After completing HVAC Door Recalibration, the DRBIII

t will store

the total span and the status of each door actuator. Selecting HVAC Door
Cal Monitor in System Tests will display this information.
With the DRBIII

t in HVAC, select System Tests, and then select HVAC Door Cal

Monitor.
Which message does the DRBIII

t display for R Mode Status?

All

No Pulses

Go To

13

Too Few Pulses

Inspect the Rear A/C - Heater Housing Assembly for a condition
causing the rear mode linkage/door to bind. Repair as necessary in
accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

Too Many Pulses

Remove door actuator from housing. By hand, attempt to rotate
actuator in both directions. Also, inspect for disconnected, miss-
ing, or broken door linkage, and a warped or broken door. Repair
as necessary in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

Broken Linage

Remove door actuator from housing. By hand, attempt to rotate
actuator in both directions. Also, inspect for disconnected, miss-
ing, or broken door linkage, and a warped or broken door. Repair
as necessary in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

12

NOTE: After completing HVAC Door Recalibration, the DRBIII

t will store

the total span and the status of each door actuator. Selecting HVAC Door
Cal Monitor in System Tests will display this information.
With the DRBIII

t in HVAC, select System Tests, and then select HVAC Door Cal

Monitor.
Which message does the DRBIII

t display for R Blend Status?

All

No Pulses

Go To

13

Too Few Pulses

Inspect the Rear A/C - Heater Housing Assembly for a condition
causing the rear blend linkage/door to bind. Repair as necessary in
accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

Too Many Pulses

Remove door actuator from housing. By hand, attempt to rotate
actuator in both directions. Also, inspect for disconnected, miss-
ing, or broken door linkage, and a warped or broken door. Repair
as necessary in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

Broken Linkage

Remove door actuator from housing. By hand, attempt to rotate
actuator in both directions. Also, inspect for disconnected, miss-
ing, or broken door linkage, and a warped or broken door. Repair
as necessary in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

529

HEATING & A/C

BLEND CALIBRATION FAULT - MTC —

Continued

TEST

ACTION

APPLICABILITY

13

Turn the ignition off.
Disconnect the A/C - Heater Control Module C1 harness connector.
Measure the resistance between the Rear Common Door Driver circuit and the
applicable door driver circuit.
Is the resistance above 70.0 ohms?

All

Yes

→ Go To 14

No

→ Reconnect C1. Rerun Recalibration. If DRB displays same fault,

replace A/C-Htr Cntrl in accord with Service Info. If DRBIII
displays a different fault, ck wiring & connectors for cause of
intermittent condition. If no prob found, rerun test from Step 1.
Perform BODY VERIFICATION TEST - VER 1.

14

Turn the ignition off.
Disconnect the A/C - Heater Control Module C1 harness connector.
Remove the applicable door actuator from the Rear A/C - Heater Housing Assembly.
Disconnect the door actuator harness connector.
Measure the resistance of the door driver circuit between the A/C - Heater Control
Module C1 harness connector and the door actuator harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 15

No

→ Repair the Rear Common Door Driver circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

15

Turn the ignition off.
Disconnect the A/C - Heater Control Module C1 harness connector.
Remove the applicable door actuator from the Rear A/C - Heater Housing Assembly.
Disconnect the door actuator harness connector.
Measure the resistance of the Rear Common Door Driver circuit between the door
actuator harness connector and the A/C - Heater Control Module C1 harness
connector.
Is the resistance below 5.0 ohms?

All

Yes

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

mation.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Repair the Rear Common Door Driver circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

530

HEATING & A/C

BLEND CALIBRATION FAULT - MTC —

Continued