Chrysler Voyager. Manual — part 35

Symptom:

P0645-A/C CLUTCH RELAY CKT

When Monitored and Set Condition:

P0645-A/C CLUTCH RELAY CKT

When Monitored:

With the ignition on. Battery voltage greater than 10.4 volts. A/C

Switch on.

Set Condition:

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

circuit.

POSSIBLE CAUSES

A/C CLUTCH RELAY OPERATION

FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN

INTELLIGENT POWER MODULE

A/C CLUTCH RELAY

IPM FUSE & RELAY CENTER

(C13) A/C CLUTCH RELAY CONTROL CKT OPEN

(C13) 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

→ Refer to the INTERMITTENT CONDITION symptom in the

Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 2

2

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 3

No

→ Go To 8

139

DRIVEABILITY - SBEC

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 12-volts, probe the A/C Clutch Relay Control
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 4

4

Turn the ignition off.
Disconnect the Intelligent Power Module 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 5

5

Turn the ignition off.
Disconnect the Intelligent Power Module C3 harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the (C13) A/C Clutch Relay Control circuit between the
Intelligent Power Module C3 harness connector and the PCM harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 6

No

→ Repair the (C13) A/C Clutch Relay Control circuit for an open.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

6

Turn the ignition off.
Disconnect the Intelligent Power Module C3 harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the (C13) A/C Clutch Relay Control circuit in the
Intelligent Power Module C3 harness connector to ground.
Is the resistance below 5.0 ohms?

All

Yes

→ Repair the (C13) A/C Clutch Relay Control circuit for a short to

ground.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 7

7

NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay
particular attention to all Power and Ground circuits.
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.

140

DRIVEABILITY - SBEC

P0645-A/C CLUTCH RELAY CKT —

Continued

TEST

ACTION

APPLICABILITY

8

Turn the ignition off.
Disconnect the Intelligent Power Module 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.

141

DRIVEABILITY - SBEC

P0645-A/C CLUTCH RELAY CKT —

Continued

Symptom:

P0700-EATX CONTROLLER DTC PRESENT

TEST

ACTION

APPLICABILITY

1

This is an informational DTC letting you know that a DTC(s) is stored in the
Transmission Control Module.
Erase this DTC from the PCM after all Transmission DTC(s) have been repaired.
Using the DRBIII

t, read the Transmission Controller DTC and refer to the

Transmission Category and perform the appropriate symptom.
PCM Diagnostic Information complete.

All

Continue

Test Complete.

142

DRIVEABILITY - SBEC