Chrysler Voyager. Manual — part 109

Symptom:

P0645-A/C CLUTCH RELAY CIRCUIT

When Monitored and Set Condition:

P0645-A/C CLUTCH RELAY CIRCUIT

When Monitored:

With the ignition on. Battery voltage greater than 10 volts. A/C Switch

on.

Set Condition:

An open or shorted condition is detected in the A/C clutch relay control

circuit. One Trip Fault.

POSSIBLE CAUSES

A/C CLUTCH RELAY INTERMITTENT OPERATION

INTERMITTENT CONDITION

FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN

INTEGRATED POWER MODULE

A/C CLUTCH RELAY

IPM FUSE & RELAY CENTER

A/C CLUTCH RELAY CONTROL CKT OPEN

A/C CLUTCH RELAY CONTROL CIRCUIT SHORT TO GROUND

PCM

TEST

ACTION

APPLICABILITY

1

Turn the ignition on.
With the DRBIII

t, actuate the A/C Clutch Relay.

Is the A/C Clutch Relay operating?

All

Yes

→ Go To 2

No

→ Go To 3

2

Turn the ignition on.
With the DRBIII

t, actuate the A/C Clutch Relay.

Wiggle the wiring harness from the A/C Clutch Relay to the PCM while the relay is
actuating.
Did the A/C Clutch Relay stop when wiggling the wiring harness?

All

Yes

→ Repair as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Refer to the INTERMITTENT CONDITION symptom in the

Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

435

DRIVEABILITY - NGC

TEST

ACTION

APPLICABILITY

3

Turn the ignition off.
Remove the A/C Clutch Relay from the IPM.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Fused Ignition Switch
circuit in the IPM.
Does the test light illuminate?

All

Yes

→ Go To 4

No

→ Go To 9

4

Turn the ignition off.
Remove the A/C Clutch Relay from the IPM.
Turn the ignition on.
Using a 12-volt test light connected to 12-volts, probe the A/C Clutch Relay circuit in
the IPM.
With the DRBIII

t, actuate the A/C Clutch Relay.

Does the test light flash on and off?

All

Yes

→ Replace the A/C Clutch Relay.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 5

5

Turn the ignition off.
Disconnect the IPM C3 harness connector.
Turn the ignition on.
Using a 12-volt test light connected to 12-volts, probe the A/C Clutch Relay Control
circuit in the IPM harness connector.
With the DRBIII

t, actuate the A/C Clutch Relay.

Does the test light flash on and off?

All

Yes

→ Replace the IPM Fused & Relay Center.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 6

6

Turn the ignition off.
Disconnect the IPM C3 harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the A/C Clutch Relay Control circuit between the IPM C3
harness connector and the PCM harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 7

No

→ Repair the A/C Clutch Relay Control circuit for an open.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

7

Turn the ignition off.
Disconnect the IPM C3 harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the A/C Clutch Relay Control circuit in the IPM C3 harness
connector to ground.
Is the resistance below 5.0 ohms?

All

Yes

→ Repair the A/C Clutch Relay Control circuit for a short to ground.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 8

436

DRIVEABILITY - NGC

P0645-A/C CLUTCH RELAY CIRCUIT —

Continued

TEST

ACTION

APPLICABILITY

8

If there are no possible causes remaining, view repair.

All

Repair

Replace and program the Powertrain Control Module Module in
accordance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

9

Turn the ignition off.
Disconnect the IPM C3 harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Fused Ignition Switch
circuit in the IPM harness connector.
Does the test light illuminate?

All

Yes

→ Replace the IPM Fuse & Relay Center.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Repair the Fused Ignition Switch Output circuit for an open.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

437

DRIVEABILITY - NGC

P0645-A/C CLUTCH RELAY CIRCUIT —

Continued

Symptom:

P0685-ASD RELAY CONTROL CIRCUIT

When Monitored and Set Condition:

P0685-ASD RELAY CONTROL CIRCUIT

When Monitored:

With ignition on. Battery voltage above 10 volts.

Set Condition:

An open or shorted condition is detected in the ASD relay control circuit.

One trip Fault.

POSSIBLE CAUSES

ASD RELAY INTERMITTENT OPERATION

INTERMITTENT CONDITION

FUSED B+ OUTPUT CIRCUIT

ASD RELAY

IPM FUSE & RELAY CENTER

ASD RELAY CONTROL CIRCUIT OPEN

ASD RELAY CONTROL CIRCUIT SHORT TO GROUND

PCM

TEST

ACTION

APPLICABILITY

1

Turn the ignition on.
With the DRBIII

t, actuate the ASD Relay.

Is the ASD Relay operating?

All

Yes

→ Go To 2

No

→ Go To 3

2

Turn the ignition on.
With the DRBIII

t, actuate the ASD Relay.

Wiggle the wiring harness from the ASD Relay to the PCM while the relay is
actuating.
Did the ASD Relay stop when wiggling the wiring harness?

All

Yes

→ Repair as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Refer to the INTERMITTENT CONDITION symptom in the

Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

438

DRIVEABILITY - NGC