air condition CHRYSLER VOYAGER 2000 Diagnostic Manual

Symptom:
P-1388 AUTO SHUTDOWN RELAY CONTROL CIRCUIT
When Monitored and Set Condition:
P-1388 AUTO SHUTDOWN RELAY CONTROL CIRCUIT
When Monitored: With ignition key on and battery voltage greater than 10 volts.
Set Condition:
POSSIBLE CAUSES
FUSED B(+) CIRCUIT OPEN
AUTO SHUTDOWN RELAY RESISTANCE>=100.0 OHMS
ASD RELAY CONTROL CIRCUIT WIRING HARNESS INTER DEF
ASD RELAY CONTROL CIRCUIT WIRING HARNESS OBSER DEF
AUTO SHUTDOWN RELAY CONTROL CIRCUIT OPEN
AUTO SHUTDOWN RELAY CONTROL CIRCUIT SHORT TO GROUND
PCM DEFECTIVE (AUTO SHUTDOWN RELAY CONTROL CIRCUIT)
TEST ACTION APPLICABILITY
1 Ignition on, Engine Not Running
The ASD Relay is referred to as the Low Pressure Shutoff Relay in CNG
applications.
With the DRB, actuate the Auto Shutdown Relay.
Is the ASD Relay clicking?All
Ye s®Go To 2
No®Go To 4
2 Engine running.
Wiggle the Wiring Harness from the ASD Relay to the PCM.
Did the engine die out when wiggling wires?All
Ye s®Repair circuit as necessary where wiggling caused the engine to
die out.
Perform Powertrain Verification Test VER-2A.
No®Go To 3
3 Ignition Off
Using the schematic as a guide, inspect the Wiring and Connectors.
Were any problems found?All
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-2A.
No®Test Complete.
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Symptom:
P-1398 MISFIRE ADAPTIVE NUMERATOR AT LIMIT
When Monitored and Set Condition:
P-1398 MISFIRE ADAPTIVE NUMERATOR AT LIMIT
When Monitored: Under closed throttle decel; A/C off; engine coolant temp > 23 degrees
C (75 degrees F); longer than 50 seconds after engine start. The speed at which the
deceleration occurs must be sufficient for the given gear range, e.g., > 36 Km/h (36 mph)
in first gear or > 104 Km/h (> 65) in high gear.
Set Condition: When one of the CKP Sensor target windows 15 degrees C (60 degrees F)
has more than 2.86% variance from the reference window.
POSSIBLE CAUSES
CKP SENSOR CONNECTOR OBSERVABLE DEFECT
CKP SENSOR CONNECTOR OBSERVABLE DEFECT
CKP SENSOR DEFECTIVE
CKP SENSOR DEFECTIVE
CKP SENSOR NOT PROPERLY INSTALLED
CKP SENSOR NOT PROPERLY INSTALLED
NOTCHES IN CRANKSHAFT DEFECTIVE
SLOTS IN FLEXPLATE DEFECTIVE
TEST ACTION APPLICABILITY
1 Ignition Off.
Disconnect the Crankshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Inspect all Terminals.
Is any Terminal damaged, pushed out or miswired?ENGINE - 3.0L V6
and/or ENGINE -
3.3L V6 and/or EN-
GINE - 3.8L V6
and/or ENGINE -
3.3L V6 FFV
Ye s®Repair as necessary.
Perform Verification Test VER-2A.
No®Go To 2
2 Ignition Off.
Disconnect the Crankshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Inspect the Crankshaft Position Sensor for proper Torque and installation.
Is the Crankshaft Position Sensor properly installed?ENGINE - 3.0L V6
and/or ENGINE -
3.3L V6 and/or EN-
GINE - 3.8L V6
and/or ENGINE -
3.3L V6 FFV
Ye s®Go To 3
No®Properly install CKP Sensor.
Perform Verification Test VER-2A.
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Symptom:
P-1486 EVAP LEAK MONITOR PINCHED HOSE FOUND
When Monitored and Set Condition:
P-1486 EVAP LEAK MONITOR PINCHED HOSE FOUND
When Monitored: Amb temp bet 4 deg C (40deg F) & 32 deg C (90deg F), & coolant w/in
±12 deg C (10deg F) of amb. If PCM suspects pinch, no fault until runs evap purge flow
mon. Purge flow monitored w/eng temp >76 deg C (170deg F), engine in closed loop, idle 2
min, no low fuel, MAP <15.7 in. merc, & baro alt <8000 ft.
Set Condition: LDP must pass stricter evap system test first. No air flow through the
evaporative system is detected by the evap monitor.
POSSIBLE CAUSES
FUEL TANK TO EVAP CANISTER HOSE PINCHED
LDP PRESSURE HOSE BLOCKAGE
PURGE SOLENOID TO EVAP CANISTER HOSE PINCHED
LEAK DETECTION PUMP BLOCKAGE
EVAPORATIVE CANISTER BLOCKAGE LDP SIDE
EVAPORATIVE CANISTER BLOCKAGE SOLENOID SIDE
EVAP LEAK MONITOR PINCHED HOSE DOES NOT REOCCUR
TEST ACTION APPLICABILITY
1NOTE: Replacing the Powertrain Control Module will not correct this
problem.
With the DRB, read the DTCs.
Is the GLOBAL GOOD TRIP counter displayed and equal to zero?All
Ye s®Go To 3
No®Go To 2
2 At this time the Evap Leak Monitor Pinched Hose Found does not exist or is an
intermittent problem.
With the DRB, read the FREEZE FRAME.
With this screen, attempt to duplicate the condition that has set this fault.
While using FREEZE FRAME pay particular attention to the fault setting condi-
tions, such as speed, temp, load, and map vacuum.
Does the Evap Leak Monitor Pinched Hose Found reoccur?All
Ye s®Go To 3
No®Evap Leak Monitor Pinched Hose Found no longer exists.
Perform VERIFICATION TEST VER-6A.
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Symptom:
P-1491 RADIATOR FAN CONTROL RELAY CIRCUIT
When Monitored and Set Condition:
P-1491 RADIATOR FAN CONTROL RELAY CIRCUIT
When Monitored: With the ignition key on, battery voltage greater than 10 volts, and the
PCM requests the fans to be turned on.
Set Condition: An open or shorted condition is detected in the radiator fan relay control
circuit.
POSSIBLE CAUSES
FUSED B (+) CIRCUIT OPEN
RAD FAN RELAY OUTPUT CIRCUIT, 0 VOLTS TO BATTERY V
RADIATOR FAN RELAY GROUND CIRCUIT OPEN
RADIATOR FAN RELAY DEFECTIVE
RAD FAN RELAY CONTROL CIRCUIT SHORT TO GROUND
RADIATOR FAN MOTORS W/H INTERMITTENT DEFECT
RADIATOR FAN MOTORS W/H OBSERVABLE DEFECT
RADIATOR FAN RELAY CONTROL CIRCUIT OPEN
PCM DEFECTIVE (RADIATOR FAN MOTORS)
TEST ACTION APPLICABILITY
1 Ignition On
With the DRB, actuate the Radiator Fan Relay.
Are both of the Radiator Fan Motors cycling on and off?All
Ye s®Go To 2
No®Go To 4
2 Ignition On
With the DRB, actuate the Radiator Fan Relay.
Wiggle the Wiring Harness from the Relay to the PCM.
Did the wiggling interrupt the Radiator Fan Motor cycling?All
Ye s®Repair as necessary where wiggling caused the cycling to be
interrupted.
Perform Powertrain Verification Test VER-5A.
No®Go To 3
3 Ignition Off
Using the schematic as a guide, inspect the Wiring and Connectors.
Were any problems found?All
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
No®Test Complete.
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Symptom:
P-1495 LEAK DETECTION PUMP SOLENOID CIRCUIT
When Monitored and Set Condition:
P-1495 LEAK DETECTION PUMP SOLENOID CIRCUIT
When Monitored: Immediately after a cold start, with ambient temperature between 4
deg C (40 deg F) and 32 deg C (90 deg F) and coolant temperature within ±12 deg C (10 deg
F) of ambient temperature.
Set Condition: The state of the solenoid does not change.
POSSIBLE CAUSES
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
LDP DEFECTIVE
LDP SOLENOID CKT WIRING HARNESS INTERMITTENT DEF
LDP SOLENOID CKT WIRING HARNESS OBSERVABLE DEFECT
LDP SOLENOID CONTROL CIRCUIT OPEN
LDP SOLENOID CONTROL CIRCUIT SHORT TO GROUND
PCM DEFECTIVE
NO POSSIBLE CAUSES REMAINING
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, actuate the LDP Pump Solenoid.
Is it clicking?All
Ye s®Go To 2
No®Go To 5
2 Ignition On, Engine Not Running.
With the DRB, actuate the LDP Solenoid.
While monitoring the LDP Switch state, wiggle Wiring Harness from the LDP
Solenoid to PCM.
Did the LDP Switch state ever change from up to down when wiggled?All
Ye s®Repair as necessary where wiggling caused problem to appear.
Perform Powertrain Verification Test VER-6A.
No®Go To 3
3 Ignition Off
Using the schematic as a guide, inspect the Wiring and Connectors.
Were any problems found?All
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-6A.
No®Go To 4
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TEST ACTION APPLICABILITY
4 Check the freeze frame data to determine the conditions when code was set.
Attempt duplication of 'freeze frame' conditions for added diagnostics.
If there are no other possible causes remaining there is assumed to be an9intermit-
tent9problem with a Wiring Harness Connector or Wire.
View repair options.All
Repair
Visually inspect related Wire Harness Connectors and Harnesses.
Look for broken, bent, pushed out, or corroded terminals and for
chafed, pierced, or partiallly broken wire, respectively. Refer to
any hotlines or technical service bulletins that apply.
5 Ignition Off
Disconnect the LDP Solenoid.
Note: Check connectors - Clean/repair as necessary.
Key on.
Using a Voltmeter, measure the voltage of the Fused Ignition Switch Output Circuit
at the Solenoid Connector.
Is the voltage above 10.0 volts?All
Ye s®Go To 6
No®Repair the open Fused Ignition Switch Output Circuit.
Perform Powertrain Verification Test VER-6A.
6 Ignition Off
Disconnect the LDP Solenoid.
Note: Check connectors - Clean/repair as necessary.
Disconnect the PCM.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the LDP Solenoid Control Circuit at
the PCM Connector to ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the LDP Solenoid Circuit for a short to ground.
Perform Powertrain Verification Test VER-6A.
No®Go To 7
7 Ignition Off
Disconnect the LDP Solenoid.
Note: Check connectors - Clean/repair as necessary.
Disconnect the PCM.
Note: Check connectors - Clean/repair as necessary.
With an Ohmmeter, measure the resistance of the LDP Solenoid Control Circuit from
the PCM Connector to the LDP Connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 8
No®Repair the open LDP Solenoid Control Circuit.
Perform Powertrain Verification Test VER-6A.
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DRIVEABILITY
P-1495 LEAK DETECTION PUMP SOLENOID CIRCUIT ÐContinued
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Symptom:
P-1496 5 VOLT SUPPLY OUTPUT TOO LOW
When Monitored and Set Condition:
P-1496 5 VOLT SUPPLY OUTPUT TOO LOW
When Monitored: With the ignition on.
Set Condition: The 5-volt supply to the sensors is below 3.5 volts for 4 seconds.
POSSIBLE CAUSES
5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
5-VOLT SUPPLY WIRING HARNESS INTER DEF
A/C PRESSURE SENSOR DEFECTIVE
MAP SENSOR DEFECTIVE
THROTTLE POSITION SENSOR DEFECTIVE
PCM DEF (5 VOLT SUPPLY CIRCUIT)
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
Disconnect the Throttle Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary
With a voltmeter, probe the 5-Volt Supply Ckt at the TP Sensor harness connector.
Note: Reconnect TPS Connector after measurement.
Is the voltage reading below 4.5 volts?All
Ye s®Go To 2
No®Go To 6
2 Ignition On, Engine Not Running.
Disconnect the Throttle Position Sensor Connector.
Disconnect the A/C Pressure Sensor.
Note: Check connectors - Clean/repair as necessary.
With a voltmeter, probe the TP Sensor 5-Volt Supply Circuit to the TP Sensor.
Is the 5-Volt Supply Circuit voltage above 4.0 volts?All
Ye s®Replace the A/C Pressure Sensor.
Perform Powertrain Verificaton Test VER-2A.
No®Go To 3
3 Ignition On, Engine Not Running
Disconnect the Throttle Position Sensor Connector.
Disconnect the MAP Sensor Electrical Connector.
Note: Check connectors - Clean/repair as necessary.
With the voltmeter, probe the TP Sensor 5-Volt Supply Circuit to the TP Sensor.
Is the 5-Volt Supply Circuit voltage above 4.0 volts?All
Ye s®Replace the Map Sensor.
Perform Powertrain Verification Test VER-2A.
No®Go To 4
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Symptom:
P-1598 A/C PRESSURE SENSOR VOLTS TOO HIGH
When Monitored and Set Condition:
P-1598 A/C PRESSURE SENSOR VOLTS TOO HIGH
When Monitored: With the ignition on, the engine running, and the A/C relay energized.
Set Condition: The A/C pressure sensor signal at PCM cavity 42 goes above 4.9 volts.
POSSIBLE CAUSES
AIR CONDITIONING PRESSURE SENSOR GROUND CIRCUIT OPEN
AIR CONDITIONING PRESSURE SENSOR DEFECTIVE
A/C PRESS SENSOR CONN AND WIRING HARN INTER DAMAGE
A/C PRESSURE SENSOR CONNECTOR AND HARNESS OBSERVABLE DEFECT
A/C PRESSURE SENSOR SIGNAL CIRCUIT OPEN
A/C PRESSURE SENSOR SIGNAL SHORT TO VOLTAGE
PCM DEFECTIVE
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, read the A/C Pressure Sensor voltage.
Is the A/C Pressure Sensor voltage above 4.6 volts?All
Ye s®Go To 2
No®Go To 7
2 Ignition Off
Disconnect the A/C Pressure Sensor.
Note: Check connectors - Clean/repair as necessary.
Turn ignition on.
Using a Voltmeter, measure voltage of the A/C Pressure Signal Circuit to ground.
Is the voltage above 6.0 volts?All
Ye s®Repair A/C Pressure Sensor Signal shorted to voltage.
Perform Powertrain Verification Test VER-2A.
No®Go To 3
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Symptom:
P-1599 A/C PRESSURE SENSOR VOLTS TOO LOW
When Monitored and Set Condition:
P-1599 A/C PRESSURE SENSOR VOLTS TOO LOW
When Monitored: With the ignition switch on, the engine running , and the A/C relay
energized.
Set Condition: The A/C pressure sensor signal voltage at PCM cavity 42 goes below 0.5
volt, or the voltage is below .059 volt.
POSSIBLE CAUSES
A/C PRESSURE SENSOR 5-VOLT SUPPLY CKT OPEN
A/C PRESS SEN CONN AND WIRING HARN OBSERVABLE DEF
A/C PRESSURE SEN SIG CKT SHORTED TO SEN GND CKT
A/C PRESSURE SENSOR CONN AND WIRING HARN INTER DEF
A/C PRESSURE SENSOR SIGNAL CKT SHORTED TO GND
A/C PRESSURE SENSOR DEFECTIVE
PCM DEF (A/C PRESSURE SEN)
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, read the A/C Pressure Sensor voltage.
Is the A/C Pressure Sensor voltage below 0.2 volt?All
Ye s®Go To 2
No®Go To 7
2 Ignition Off
Disconnect the A/C Pressure Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on with engine not running.
Using a Voltmeter, measure the 5-Volt Supply Circuit.
Is the A/C Pressure Sensor 5-volt Supply Circuit above 4.9 volts?All
Ye s®Go To 3
No®Repair the open 5-Volt Supply Circuit.
Perform Powertrain Verification Test VER-2A.
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Symptom:
P-1695 NO CCD MESSAGE FROM BODY CONTROLLER
When Monitored and Set Condition:
P-1695 NO CCD MESSAGE FROM BODY CONTROLLER
When Monitored: Anytime the engine is running.
Set Condition: No CCD messages are received from the BCM for 30 seconds.
POSSIBLE CAUSES
CCD BUS (+) CIRCUIT OPEN
CCD BUS (-) CIRCUIT OPEN
WIRING HARNESS OBSERVABLE DEFECT
BCM9NO RESPONSE9
PCM DEF (NO CCD MSG)
TEST ACTION APPLICABILITY
1 Ignition on with engine not running.
Erase trouble codes.
Start engine and allow to run for 1 minute.
With the DRB, read trouble codes.
Does display show9No CCD messages from Body Control Module9and a start run
counter of zero?All
Ye s®Go To 2
No®Go To 6
2 Ignition off.
Disconnect the PCM Connectors.
Disconnect the BCM Connectors.
Note: Check Connectors - clean/repair as necessary.
Using an ohmmeter, measure the CCD Bus (+) Circuit from the PCM to the BCM.
Is the resistance below 5.0 ohms?All
Ye s®Go To 3
No®Repair the open CCD Bus (+) Ckt between BCM and PCM.
Perform Verification Test VER-2A.
3 Ignition off.
Disconnect the PCM Connectors.
Disconnect the BCM Connectors.
Note: Check Connectors - clean/repair as necessary.
Using an ohmmeter, measure the CCD (-) Circuit for resistance from PCM to the
BCM.
Is the resistance below 5.0 ohms?All
Ye s®Go To 4
No®Repair the open CCD Bus (-) Ckt between BCM and PCM.
Perform Verification Test VER-2A.
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