Chrysler Town, Dodge Caravan. Manual — part 665
Symptom:
*CHECKING THE A/C RELAY OUTPUT
POSSIBLE CAUSES
A/C CLUTCH RELAY OPERATION
GROUND CIRCUIT OPEN
A/C CLUTCH
(A17) FUSED B+ CIRCUIT
(C3) A/C CLUTCH OUTPUT CIRCUIT
A/C CLUTCH RELAY
TEST
ACTION
APPLICABILITY
1
NOTE: Ensure that the refrigerant system is properly charged. Refer to the
appropriate Service Information.
Turn the ignition on.
With the DRBIII
t, actuate the A/C Clutch Relay.
Is the A/C Clutch actuating?
All
Yes
→ The A/C Clutch System operating properly at this time.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
No
→ Go To 2
2
Turn the ignition off.
Disconnect the A/C Clutch harness connector.
Measure the Ground circuit in the A/C Clutch harness connector to ground.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 3
No
→ Repair the Ground circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
3
Disconnect the A/C Clutch harness connector.
Turn the ignition on.
With the DRBIII
t, actuate the A/C Clutch Relay.
Measure the voltage of the A/C Clutch Relay Output circuit in the A/C Clutch harness
connector.
Is the voltage above 11.0 volts?
All
Yes
→ Replace the A/C Clutch.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
No
→ Go To 4
4
Turn the ignition off.
Remove the A/C Clutch Relay from the PDC.
Using a 12-volt test light connected to ground, probe the (A17) Fused B+ circuit in the
PDC.
Does the test light illuminate brightly?
All
Yes
→ Go To 5
No
→ Repair the (A17) Fused B+ circuit. Inspect fuses and replace as
necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
468
DRIVEABILITY - NGC
TEST
ACTION
APPLICABILITY
5
Turn the ignition off.
Disconnect the A/C Clutch Relay from the PDC.
Disconnect the A/C Clutch harness connector.
Measure the resistance of the (C3) A/C Clutch Relay Output circuit between the PDC
and the A/C Clutch harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the A/C Clutch Relay.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
No
→ Repair the (C3) A/C Clutch Relay Output circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
469
DRIVEABILITY - NGC
*CHECKING THE A/C RELAY OUTPUT —
Continued
Symptom List:
ANTENNA FAILURE
COP FAILURE
EEPROM FAILURE
INTERNAL FAULT
RAM FAILURE
SERIAL LINK INTERNAL FAULT
STACK OVERFLOW FAILURE
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be ANTENNA FAILURE.
When Monitored and Set Condition:
ANTENNA FAILURE
When Monitored:
Every 250 milliseconds with the ignition on.
Set Condition:
The SKIM’s microcontroller determines that an antenna circuit fault has
occurred for 2.0 consecutive seconds.
COP FAILURE
When Monitored:
With the ignition on.
Set Condition:
The COP timer is not reset by the micro controller every 65.5 milliseconds.
EEPROM FAILURE
When Monitored:
With the ignition on.
Set Condition:
When the value written to EEPROM memory does not equal the value
read back after the write operation.
INTERNAL FAULT
When Monitored:
With the ignition on.
Set Condition:
The SKIM has detected a fault during an internal self test.
RAM FAILURE
When Monitored:
With the ignition on.
Set Condition:
The RAM fails a test that checks the RAM’s ability to retain memory.
SERIAL LINK INTERNAL FAULT
When Monitored:
With the ignition on.
Set Condition:
The SKIM fails an internal J1850 communication self test.
STACK OVERFLOW FAILURE
When Monitored:
With the ignition on.
Set Condition:
The micro controller has exceeded its stack space limit.
470
SENTRY KEY IMMOBILIZER
POSSIBLE CAUSES
SKIM INTERNAL DTC FAILURE
TEST
ACTION
APPLICABILITY
1
Note: This trouble code indicates an internal SKIM fault.
With the DRBIII
t, read and record the SKIM DTCs and then erase the SKIM DTCs
Perform 10 ignition key cycles, leaving the ignition key on for a minimum of 90
seconds per cycle.
With the DRBIII
t , read the SKIM DTCs.
Did the same SKIM DTC return?
All
Yes
→ Replace and program the Sentry Key Immobilizer Module in
accordance with the Service Information.
Perform SKIS VERIFICATION.
No
→ Test Complete.
471
SENTRY KEY IMMOBILIZER
ANTENNA FAILURE —
Continued
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