Chrysler Town, Dodge Caravan. Manual — part 583
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
Symptom:
P0703-BRAKE SWITCH SENSE CIRCUIT
When Monitored and Set Condition:
P0703-BRAKE SWITCH SENSE CIRCUIT
When Monitored:
TEST #1: Vehicle speed greater than 17 MPH to enable. TEST #2:
Speed must be 0 and brake switch indicates on.
Set Condition:
TEST #1: If vehicle speed goes to 0 MPH without brake input. Condition
must be repeated 9 times to set fault. Two trip fault. TEST #2: If vehicle speed go above 17
MPH for more than 6.4 seconds without a change with the brake depressed. Condition
must be repeat 9 times to set fault.
POSSIBLE CAUSES
GOOD TRIP EQUAL TO ZERO
FUSED B+ CIRCUIT
BRAKE SWITCH SENSE CIRCUIT SHORTED TO VOLTAGE
BRAKE SWITCH SENSE SHORTED TO GROUND
BRAKE SWITCH SENSE CIRCUIT OPEN
GROUND CIRCUIT OPEN
BRAKE LAMP SWITCH OPERATION
PCM
TEST
ACTION
APPLICABILITY
1
NOTE: Ensure the Brake Switch is adjusted properly before continuing.
Turn the ignition on.
With the DRBIII
t, read DTC’s.
Is the Good Trip displayed and equal to zero?
All
Yes
→ Go To 2
No
→ Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 4.
2
Turn the ignition off.
Disconnect the Brake Lamp Switch harness connector.
Using a 12-volt test light connected to ground, check the Fused B+ circuit in the
Brake Lamp Switch harness connector.
Does the test light illuminate brightly?
All
Yes
→ Go To 3
No
→ Repair the Fuse B+ circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 4.
143
DRIVEABILITY - SBEC
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