relay CHRYSLER VOYAGER 2000 Diagnostic Manual

TEST ACTION APPLICABILITY
4 Ignition Off
Disconnect the Fuel Pump Relay.
Note: Check connectors - Clean/repair as necessary.
Ignition On, Engine Not Running
Using a Voltmeter, measure the Fused Ignition Switch Output Circuit.
Is the voltage above 10.0 volts?All
Ye s®Go To 5
No®Repair the open Fused Ignition Switch Output Circuit.
Perform Powertrain Verification Test VER-2A.
5 Ignition Off
Disconnect the Fuel Pump Relay.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure across Terminals 85 and 86 of the Fuel Pump Relay for
resistance.
Is the resistance between 50 and 90 ohms?All
Ye s®Go To 6
No®Replace Fuel Pump Relay.
Perform Powertrain Verification Test VER-2A.
6 Ignition Off
Disconnect the Powertrain Control Module Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Fuel Pump Relay.
Note: Check connectors - Clean/repair as necessary
Using an Ohmmeter, measure the Fuel Pump Relay Control Circuit for resistance.
Is the resistance below 5.0 ohms?All
Ye s®Go To 7
No®Repair the open Fuel Pump Relay Control Circuit.
Perform Powertrain Verification Test VER-2A.
7 Ignition Off
Disconnect the PCM Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Fuel Pump Relay.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the Fuel Pump Relay Control Circuit to ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the Fuel Pump Relay Control Circuit for a short to ground.
Perform Powertrain Verification Test VER-2A.
No®Go To 8
8 Ignition off.
If there are no potential causes remaining, the PCM is assumed to be defective.
View repair options.All
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-2A.
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DRIVEABILITY
P1282 FUEL PUMP RELAY CONTROL CIRCUIT ÐContinued
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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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DRIVEABILITY
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TEST ACTION APPLICABILITY
4 Ignition Off
Remove the ASD Relay.
Note: Check connectors - Clean/repair as necessary.
Using a Voltmeter, measure the B(+) Circuit at ASD Relay Connector.
Is the voltage above 10.0 volts?All
Ye s®Go To 5
No®Repair the open Fused B(+) Circuit.
Perform Powertrain Verification Test VER-2A.
5 Ignition off.
Remove the ASD Relay.
Note: Check connectors - Clean/repair as necessary.
Use an ohmmeter in the following step.
Measure the resistance across Terminals A (86) and C (85) of the ASD Relay.
Is the resistance between 50.0 and 90.0 ohms?All
Ye s®Go To 6
No®Replace the ASD Relay.
Perform Powertrain Verification Test VER-2A.
6 Ignition Off
Remove the ASD Relay.
Check Connectors - clean/repair as necessary.
Disconnect the PCM Connector.
Check Connectors - clean/repair as necessary.
Use an ohmmeter in the following step.
Using an ohmmeter, measure the resistance of the ASD Relay Control Circuit from
the ASD Relay to the PCM Connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 7
No®Repair the open ASD Relay Control Circuit.
Perform Powertrain Verification Test VER-2A.
7 Ignition off.
Remove the ASD Relay.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the ASD Relay Control Ckt to ground..
Is the resistance below 5.0 ohms?All
Ye s®Repair the ASD Relay Control Circuit for a short to ground.
Perform Powertrain Verification Test VER-2A.
No®Go To 8
8 If there are no potential causes remaining, the PCM is assumed to be defective.
View repair options.All
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-2A.
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DRIVEABILITY
P-1388 AUTO SHUTDOWN RELAY CONTROL CIRCUIT ÐContinued
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Symptom:
P-1389 NO ASD RELAY OUTPUT VOLTAGE AT PCM
When Monitored and Set Condition:
P-1389 NO ASD RELAY OUTPUT VOLTAGE AT PCM
When Monitored: With ignition key on and battery voltage greater than 10 volts.
Set Condition: Engine running and no ASD Relay Output Sense at PCM.
POSSIBLE CAUSES
FUSED B(+) CIRCUIT OPEN
ASD RELAY DEFECTIVE
ASD RELAY OUT CKT WIRING HARNESS OBSERVABLE DEFECT
ASD RELAY OUTPUT CIRCUIT OPEN (ENGINE STARTED)
ASD RELAY OUTPUT CKT OPEN (ENGINE DID NOT START)
ASD RLY OUT CKT WIRING HARNESS INTERMITTENT DEFECT
PCM DEFECTIVE (ENGINE DID NOT START)
PCM DEFECTIVE (ENGINE STARTED)
TEST ACTION APPLICABILITY
1 Ignition off.
Is a Trouble Code also set for9ASD Relay Control Circuit?All
Ye s®Refer to symptom P-1388 AUTO SHUTDOWN RELAY CON-
TROL CIRCUIT in the DRIVEABILITY category.
No®Go To 2
2 Ignition on with engine not running.
With the DRB, read Trouble Codes.
Attempt to start the engine and let idle.
Is the Global Good Trip displayed and equal to 0?All
Ye s®Go To 3
No®Go To 10
3 Ignition off.
Attempt to start the engine.
Did the engine start?All
Ye s®Go To 4
No®Go To 6
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DRIVEABILITY
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TEST ACTION APPLICABILITY
4 Ignition Off
Disconnect the PCM Connector.
Note: Check connectors - Clean/repair as necessary.
Remove the Auto Shutdown Relay.
Note: Check connectors - Clean/repair as necessary.
Using an ohmmeter, measure the resistance of the ASD Relay Output Circuit from
ASD Relay to the PCM Connector.
Is the resistance above 5.0 ohms?All
Ye s®Repair open ASD Relay Output Circuit.
Perform Powertrain Verification Test VER-2A.
No®Go To 5
5 Ignition off.
If there are no potential causes remaining, the Powertrain Control Module is
assumed to be defective.
View repair options.All
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-2A.
6 Ignition Off
Remove the Auto Shutdown Relay.
Note: Check connectors - Clean/repair as necessary.
Using a Voltmeter, measure the Fused B (+) Circuit at Relay Connector.
Is the voltage above 10.0 volts?All
Ye s®Go To 7
No®Repair the open Fused B(+) Circuit. (Check Engine Fuse in PDC)
.
Perform Powertrain Verification Test VER-2A.
7 Ignition Off
Remove the Auto Shutdown Relay.
Note: Check connectors - Clean/repair as necessary.
Install a substitute Relay for the Auto Shutdown Relay.
Attempt to start the Vehicle.
Did the engine start?All
Ye s®Replace the original Auto Shutdown Relay.
Perform Powertrain Verification Test VER-2A.
No®Go To 8
8 Ignition Off.
Disconnect the Powertrain Control Module Connector.
Note: Check connectors - Clean/repair as necessary.
Remove the Auto Shutdown Relay.
Note: Check connectors - Clean/repair as necessary.
Using an ohmmeter, measure the resistance of the ASD Relay Output Circuit from
the Auto Shutdown Relay to the PCM.
Is the resistance above 5.0 ohms?All
Ye s®Repair open ASD Relay Output Circuit.
Perform Powertrain Verification Test VER-2A.
No®Go To 9
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DRIVEABILITY
P-1389 NO ASD RELAY OUTPUT VOLTAGE AT PCM ÐContinued
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TEST ACTION APPLICABILITY
9 Ignition off.
If there are no potential causes remaining, the Powertrain Control Module is
assumed to be defective.
View repair options.All
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-2A.
10 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®Go To 11
11 Start Engine.
Note: The Engine must be running before continuing test.
Wiggle Wiring Harness from ASD Relay to the Powertrain Control Module.
With the DRB, read Trouble Codes.
Did trouble code9No ASD Relay Output Voltage at PCM9reset?All
Ye s®Repair as necessary where wiggling caused the Trouble Code to be
set.
Perform Powertrain Verification Test VER-2A.
No®Test Complete.
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DRIVEABILITY
P-1389 NO ASD RELAY OUTPUT VOLTAGE AT PCM ÐContinued
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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.
203
DRIVEABILITY
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TEST ACTION APPLICABILITY
4 Ignition On
With the DRB, actuate the Radiator Fan Relay.
Using a voltmeter, the Fan Relay Output Circuit voltage at the Relay Connector.
Does the voltage cycle from below 1.0 volt to Battery voltage?All
Ye s®Repair or replace Radiator Fans or Relay to Fan Wiring as
necessary.
Perform Powertrain Verification Test VER-5A.
No®Go To 5
5 Ignition Off
Disconnect the Radiator Fan Relay Connector.
Note: Check connectors - Clean/repair as necessary.
Turn key on.
Using a Voltmeter, measure the Fused B(+) Circuit at Relay Connector.
Is the voltage above 10.0 volts?All
Ye s®Go To 6
No®Repair the open Fused B (+) Circuit (check Radiator Fan Fuse in
PDC).
Perform Powertrain Verification Test VER-5A.
6 Ignition Off
Disconnect the Radiator Fan Relay Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the Radiator Fan Relay Ground Circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 7
No®Repair the open Fan Relay Ground Circuit.
Perform Powertrain Verification Test VER-5A.
7 Ignition Off
Disconnect the Radiator Fan Relay Connector.
Disconnect the PCM Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the Radiator Fan Relay Control Circuit to a good
ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the Radiator Fan Relay Control Circuit for a short to
ground.
Perform Powertrain Verification Test VER-5A.
No®Go To 8
8 Ignition Off
Disconnect the Radiator Fan Relay Connector.
Disconnect the PCM Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the Radiator Fan Relay Control
Circuit from the Relay to the PCM.
Is the resistance below 5.0 ohms?All
Ye s®Go To 9
No®Repair the open Radiator Fan Relay Control Circuit.
Perform Powertrain Verification Test VER-5A.
204
DRIVEABILITY
P-1491 RADIATOR FAN CONTROL RELAY CIRCUIT ÐContinued
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TEST ACTION APPLICABILITY
9 Ignition Off
Disconnect the PCM Connector.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire to the Radiator Fan Relay Control Circuit at the PCM.
Turn the ignition on.
Momentarily connect the other end of the jumper wire to a good ground.
Did the Radiator Fans actuate?All
Ye s®Go To 10
No®Replace the Radiator Fan Relay.
Perform Powertrain Verification Test VER-5A.
10 If there are no potential causes remaining, the PCM is assumed to be defective.
View repair options.All
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-5A.
205
DRIVEABILITY
P-1491 RADIATOR FAN CONTROL RELAY CIRCUIT ÐContinued
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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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DRIVEABILITY
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