2001 CHRYSLER VOYAGER ECU

RIGHT SIACM INTERNAL 1 - ACTIVE
When Monitored: When the ignition on, the Right SIACM on board diagnostics contin-
uously performs internal circuit tests.
Set Condition: This DTC will set if the Right SIACM identifies an out of range internal
circuit.
RIGHT SIACM INTERNAL 1 - STORED
When Monitored: When the ignition on, the Right SIACM on board diagnostics contin-
uously performs internal circuit tests.
Set Condition: This DTC will set if the Right SIACM identifies an out of range internal
circuit.
RIGHT SIACM OUTPUT DRIVER 1 - ACTIVE
When Monitored: When the ignition on, the Right SIACM on board diagnostics contin-
uously performs internal circuit tests.
Set Condition: This DTC will set if the Right SIACM identifies an out of range internal
circuit.
RIGHT SIACM OUTPUT DRIVER 1 - STORED
When Monitored: When the ignition on, the Right SIACM on board diagnostics contin-
uously performs internal circuit tests.
Set Condition: This DTC will set if the Right SIACM identifies an out of range internal
circuit.
RIGHT SIACM, LOSS OF IGNITION RUN-START - ACTIVE
When Monitored: With the ignition in the run or start position the Right SIACM
monitors the SIACM Run-Start Driver circuit for proper system voltage. This is an active
trouble code only.
Set Condition: If the voltage on the SIACM Run-Start Driver circuit is below 4.0 volts,
the code will set.
RIGHT SIACM, NO PCI TRANSMISSION - ACTIVE
When Monitored: With the ignition in the On position and the Right SIACM transmitting
information on the PCI BUS.
Set Condition: The code will set if the Right SIACM cannot detect the Right SIACM
transmitting information on the PCI BUS for 4 consecutive seconds. NOTE: Any PCI Bus
Failure will cause this code to set.
174
AIRBAG
RIGHT SIACM ACCELEROMETER 1 - ACTIVE ÐContinued

Symptom:
COOLDOWN TEST FAILED
When Monitored and Set Condition:
COOLDOWN TEST FAILED
When Monitored: When executing the Cooldown Test.
Set Condition: This DTC is set if the A/C system is unable to bring the evaporator
temperature down 6.7ÉC (20ÉF) within two minutes.
POSSIBLE CAUSES
OTHER COOLDOWN TEST MESSAGES PRESENT
ATC DTC(S) PRESENT
CHECK THE PCM/ECM FOR DTCS
A/C SYSTEM TESTING
TEST ACTION APPLICABILITY
1NOTE: The work area ambient temperature must be above 10ÉC (50ÉF) to
test A/C system operation.
Are any other messages displayed with the Cooldown Test Failed message?All
Ye s®Return to the symptom list and choose the symptom(s).
After the repair is complete, rerun the Cooldown Test.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 2
2NOTE: The work area ambient temperature must be above 10ÉC (50ÉF) to
test A/C system operation.
Turn the ignition on.
With the DRBIIIt, read ATC DTCs.
Does the DRBIIItdisplay any ATC DTCs?All
Ye s®Return to the symptom list and choose the symptom(s).
After the repair is complete, rerun the Cooldown Test.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 3
232
AUTOMATIC TEMPERATURE CONTROL

Symptom:
INVALID CONDITIONS FOR COOLDOWN TEST, EVAP TEMPERA-
TURE TOO LOW
When Monitored and Set Condition:
INVALID CONDITIONS FOR COOLDOWN TEST, EVAP TEMPERATURE TOO
LOW
When Monitored: When executing the Cooldown Test.
Set Condition: This message will be displayed if the A/C - Heater Control Module sees
evaporator temperature below 12.7ÉC (55ÉF) when executing the Cooldown Test.
POSSIBLE CAUSES
EVAPORATOR TEMPERATURE TOO LOW
ATC DTC(S) PRESENT
CHECK THE PCM/ECM FOR DTCS
EVAPORATOR TEMPERATURE SENSOR
SENSOR GROUND CIRCUIT HIGH RESISTANCE
EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT HIGH RESISTANCE
AUTOMATIC TEMPERATURE CONTROL
TEST ACTION APPLICABILITY
1CAUTION: The work area ambient temperature must be above 15.6ÉC (60ÉF)
to test A/C system operation.
Start the engine.
Turn the A/C off.
Turn the Blower on high. Allow the blower to run for 5 minutes to ensure that the
Evaporator Temperature Sensor temperature is above 12.7ÉC (55ÉF).
With the DRBIIIt, actuate the Cooldown Test.
Does the DRBIIItdisplay: Cooldown Test Too Cold To Start?All
Ye s®Go To 2
No®Perform additional testing as necessary.
Perform BODY VERIFICATION TEST - VER 1.
2CAUTION: The work area ambient temperature must be above 15.6ÉC (60ÉF)
to test A/C system operation.
Turn the ignition on.
With the DRBIIIt, read ATC DTCs.
Does the DRBIIItdisplay any ATC DTCs?All
Ye s®Return to the symptom list and choose the symptom(s). After the
repair is complete, with the DRBIIIt, erase the DTC(s). Cycle the
ignition switch. With the DRBIIIt, reset the ATC. With the
DRBIIIt, actuate the Cooldown Test.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 3
258
AUTOMATIC TEMPERATURE CONTROL

BLEND OVERCURRENT (STORED) - MANUAL A/C
When Monitored: When actuator movement is requested.
Set Condition: All (Blend, Mode, Recirc, and Zone) Overcurrent DTCs will set if the A/C
- Heater Control Module detects an excessive current draw on the Common Door Drive
circuit(s).
CHECKSUM FAILURE (STORED) - MANUAL A/C
When Monitored: With the ignition on.
Set Condition: This DTC will set if the calibrated check sum does not match the stored
value.
EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN (STORED) - MANUAL
A/C
When Monitored: With the ignition on.
Set Condition: This DTC will set if the Evaporator Temperature Sensor/sensor circuit is
open.
EVAPORATOR TEMPERATURE SENSOR CIRCUIT SHORT (STORED) - MAN-
UAL A/C
When Monitored: With the ignition on.
Set Condition: This DTC will set if the Evaporator Temperature Sensor/sensor circuit is
shorted low.
LOOPBACK FAILURE (STORED) - MANUAL A/C
When Monitored: When the A/C - Heater Control Module executes an internal loopback
test.
Set Condition: If the A/C - Heater Control Module fails to send a message, or none of the
expected messages arrive for 5 seconds, an internal loopback test is executed. If the
internal loopback test fails, the DTC will set.
LOOPBACK TEST FAILURE (STORED) - MANUAL A/C
When Monitored: When the A/C - Heater Control Module executes an internal loopback
test.
Set Condition: If the A/C - Heater Control Module fails to send a message, or none of the
expected messages arrive for 5 seconds, an internal loopback test is executed. If the
internal loopback test fails, the DTC will set.
MODE OVERCURRENT (STORED) - MANUAL A/C
When Monitored: When actuator movement is requested.
Set Condition: All (Blend, Mode, Recirc, and Zone) Overcurrent DTCs will set if the A/C
- Heater Control Module detects an excessive current draw on the Common Door Drive
circuit(s).
515
HEATING & A/C
A/C FAULT (STORED) - MANUAL A/C ÐContinued

Symptom List:
BLEND CALIBRATION FAULT - MANUAL A/C
MODE CALIBRATION FAULT - MANUAL A/C
RECIRCULATION CALIBRATION FAULT - MANUAL A/C
ZONE CALIBRATION FAULT - MANUAL A/C
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be BLEND CALIBRATION FAULT -
MANUAL A/C.
When Monitored and Set Condition:
BLEND CALIBRATION FAULT - MANUAL A/C
When Monitored: When the HVAC Door Recalibration is executed. With the ignition on
(door actuator(s)/circuit(s) shorted low only).
Set Condition: If the Blend Door (Pass) drive span found is outside the tolerance. If the
Blend Door Actuator (Pass)/circuit is open. If the Blend Door(s) (Driver [Zone], Pass, Rear),
Mode Door(s) (Front, Rear), Recirculation Door Actuator(s)/circuit(s) are shorted low. (This
will also set Blend Calibration/Overcurrent (Front, Rear), Mode Calibration/Overcurrent
(Front, Rear), Recirculation Calibration/Overcurrent, Zone Calibration/Overcurrent
DTCs.)
MODE CALIBRATION FAULT - MANUAL A/C
When Monitored: When the HVAC Door Recalibration is executed. With the ignition on
(door actuator(s)/circuit(s) shorted low only).
Set Condition: If the Mode Door drive span found is outside the tolerance. If the Mode
Door Actuator/circuit is open. If the Blend Door(s) (Driver [Zone], Pass, Rear), Mode
Door(s) (Front, Rear), Recirculation Door Actuator(s)/circuit(s) are shorted low. (This will
also set Blend Calibration/Overcurrent (Front, Rear), Mode Calibration/Overcurrent
(Front, Rear), Recirculation Calibration/Overcurrent, Zone Calibration/Overcurrent
DTCs.)
RECIRCULATION CALIBRATION FAULT - MANUAL A/C
When Monitored: When the HVAC Door Recalibration is executed. With the ignition on
(door actuator(s)/circuit(s) shorted low only).
Set Condition: If the Recirculation Door drive span found is outside the tolerance. If the
Recirculation Door Actuator/circuit is open. If the Blend Door(s) (Driver [Zone], Pass,
Rear), Mode Door(s) (Front, Rear), Recirculation Door Actuator(s)/circuit(s) are shorted
low. (This will also set Blend Calibration/Overcurrent (Front, Rear), Mode Calibration/
Overcurrent (Front, Rear), Recirculation Calibration/Overcurrent, Zone Calibration/
Overcurrent DTCs.)
521
HEATING & A/C

ZONE CALIBRATION FAULT - MANUAL A/C
When Monitored: When the HVAC Door Recalibration is executed. With the ignition on
(door actuator(s)/circuit(s) shorted low only).
Set Condition: If the Blend Door (Driver [Zone]) drive span found is outside the tolerance.
If the Blend Door Actuator (Driver [Zone])/circuit is open. If the Blend Door(s) (Driver
[Zone], Pass, Rear), Mode Door(s) (Front, Rear), Recirculation Door Actuator(s)/circuit(s)
are shorted low. (This will also set Blend Calibration/Overcurrent (Front, Rear), Mode
Calibration/Overcurrent (Front, Rear), Recirculation Calibration/Overcurrent, Zone
Calibration/Overcurrent DTCs.)
POSSIBLE CAUSES
HVAC DTC(S) PRESENT
DOOR ACTUATOR
BLEND ACTUATOR/LINKAGE/DOOR
RECIRCULATION ACTUATOR/LINKAGE/DOOR
MODE ACTUATOR/LINKAGE/DOOR
DOOR ACTUATOR DRIVER CIRCUIT OPEN
COMMON DOOR DRIVER CIRCUIT OPEN
A/C - HEATER CONTROL MODULE
TEST ACTION APPLICABILITY
1NOTE: All Overcurrent DTCs must be repaired before diagnosing Calibra-
tion messages.
Turn the ignition on.
With the DRBIIIt, read HVAC DTCs.
Does the DRBIIItdisplay any HVAC DTCs?All
Ye s®Return to the symptom list and choose the symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 2
522
HEATING & A/C
BLEND CALIBRATION FAULT - MANUAL A/C ÐContinued

Symptom List:
COOLDOWN TEST EXCESSIVE FAULT - MANUAL A/C
COOLDOWN TEST SENSOR FAILURE - MANUAL A/C
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be COOLDOWN TEST EXCESSIVE
FAULT - MANUAL A/C.
When Monitored and Set Condition:
COOLDOWN TEST EXCESSIVE FAULT - MANUAL A/C
When Monitored: When executing the Cooldown Test.
Set Condition: This message will be displayed if the A/C system is unable to bring the
evaporator temperature down -6.7ÉC (20ÉF) within two minutes.
COOLDOWN TEST SENSOR FAILURE - MANUAL A/C
When Monitored: When executing the Cooldown Test.
Set Condition: This message will be displayed if a fault is detected with the Evaporator
Temperature Sensor/circuit when executing the Cooldown Test.
POSSIBLE CAUSES
HVAC DTC(S) PRESENT
CHECK THE PCM/ECM FOR DTCS
A/C SYSTEM TESTING
TEST ACTION APPLICABILITY
1CAUTION: The evaporator temperature must be above 12.7ÉC (55ÉF) to test
A/C system operation.
Turn the ignition on.
With the DRBIIIt, read HVAC DTCs.
Does the DRBIIItdisplay any HVAC DTCs?All
Ye s®Return to the symptom list and choose the symptoms(s).
After repair is complete, rerun the Cooldown Test.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 2
532
HEATING & A/C

Symptom:
COOLDOWN TEST SET UP FAULT - MANUAL A/C
When Monitored and Set Condition:
COOLDOWN TEST SET UP FAULT - MANUAL A/C
When Monitored: When executing the Cooldown Test.
Set Condition: This message will be displayed if the front blower is not operating at high
speed when executing the Cooldown Test.
POSSIBLE CAUSES
HVAC DTC(S) PRESENT
TEST SET UP CONDITIONS NOT MET
FRONT BLOWER/RELATED CIRCUITS
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read HVAC DTCs.
Does the DRBIIItdisplay any HVAC DTCs?All
Ye s®Return to the symptom list and choose the symptoms(s). After the
repair is complete, with the DRBIIIt, erase the DTC(s). Cycle the
ignition switch. With the DRBIIIt, actuate the Cooldown Test.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 2
2 Was the Front Blower Front Control switch set to high speed when the Cooldown Test
was actuated?All
Ye s®Check the front blower motor and related circuits for front blower
operation problems. Repair as necessary. After repair is complete,
with the DRBIIIt, actuate the Cooldown Test.
Perform BODY VERIFICATION TEST - VER 1.
No®Start the engine. Set the Front Blower Front Control switch to
high speed. With the DRBIIIt, actuate the Cooldown Test.
Perform BODY VERIFICATION TEST - VER 1.
534
HEATING & A/C