2000 CHRYSLER VOYAGER engine

Symptom:
P-0600 PCM FAILURE SPI COMMUNICATIONS
When Monitored and Set Condition:
P-0600 PCM FAILURE SPI COMMUNICATIONS
When Monitored: With the ignition key on.
Set Condition: Internal Bus Communication failure between processors.
POSSIBLE CAUSES
PCM FAILURE SPI COMMUNICATIONS
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running.
With the DRB, read Trouble Codes.
Is Trouble Code PCM FAILURE SPI COMMUNICATION present?All
Ye s®Replace the Powertrain Control Module.
Perform Powertrain Verification Test VER-2A
No®Test Complete.
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Symptom:
P-0601 INTERNAL CONTROLLER FAILURE
When Monitored and Set Condition:
P-0601 INTERNAL CONTROLLER FAILURE
When Monitored: With the ignition key on.
Set Condition: Internal checksum for software failed, does not match calculated value.
POSSIBLE CAUSES
INTERNAL CONTROLLER FAILURE
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running.
With the DRB, read Trouble Codes.
Is Trouble Code INTERNAL CONTROLLER FAILURE present?All
Ye s®Replace the Powertrain Control Module.
Perform Powertrain Verification Test VER-2A
No®Test Complete.
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Symptom:
P-0645 A/C CLUTCH RELAY CIRCUIT
When Monitored and Set Condition:
P-0645 A/C CLUTCH RELAY CIRCUIT
When Monitored: With the ignition key on and battery voltage greater than 10 volts.
Set Condition: An open or shorted condition is detected in the A/C clutch relay control
circuit.
POSSIBLE CAUSES
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
AIR CONDITIONING CLUTCH RELAY DEFECTIVE
A/C CLUTCH RELAY CIRCUIT WITHOUT INTER DEFECT
A/C CLUTCH RELAY CIRCUIT WITHOUT OBSER DEFECT
A/C CLUTCH RELAY CONTROL CIRCUIT SHORT TO GROUND
AIR CONDITIONING CLUTCH RELAY CONTROL CIRCUIT OPEN
PCM DEF (A/C CLUTCH RELAY)
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
Actuate the Air Conditioning Clutch Relay.
Is the Air Conditioning Clutch Relay clicking?All
Ye s®Go To 2
No®Go To 4
2 Ignition On, Engine Not Running
Actuate the Air Conditioning Clutch Relay.
Wiggle the Wiring Harness from the Relay to the PCM.
Did the wiggling interrupt the clicking?All
Ye s®Repair as necessary where wiggling caused the clicking to be
interrupted.
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-0703 BRAKE SWITCH STUCK PRESSED OR RELEASED
When Monitored and Set Condition:
P-0703 BRAKE SWITCH STUCK PRESSED OR RELEASED
When Monitored: With engine running. The PCM expects the signal to be high for 16
cycles while it monitors the brake switch signal during accel and decel modes.
Set Condition: After the vehicle speed increases, the PCM must accumulate 6 seconds
while delta throttle voltage is above 0.02 volt. The count is reset to zero whenever the
brake switch indicates a low signal.
POSSIBLE CAUSES
BRAKE SWITCH GROUND CIRCUIT OPEN
BRAKE SWITCH INTERNAL SHORT
BRAKE SWITCH SENSE CIRCUIT OPEN
BRAKE SWITCH SENSE CIRCUIT SHORT TO GROUND
PCM CONNECTOR OBSERVABLE DEFECT
PCM DEF (VOLTAGE HIGH)
PCM DEF (VOLTAGE LOW)
TEST ACTION APPLICABILITY
1 Ignition Off
Disconnect the Brake Switch Connector.
Note: Check connectors - Clean/repair as necessary.
Key on.
With a Voltmeter, measure the Brake Switch Sense Circuit at the Brake Switch
Connector.
Is the voltage above 9.0 volts?All
Ye s®Go To 2
No®Go To 5
2 Ignition Off
Disconnect the Brake Switch Connector.
Note: Check connectors - Clean/repair as necessary.
With an Ohmmeter, measure the Brake Switch Ground Circuit at the Brake Switch
Connector to ground.
Is the resistance below 5.0 ohms?All
Ye s®Go To 3
No®Repair the Brake Switch Ground Circuit.
Perform Powertrain Verification Test VER-2A.
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TEST ACTION APPLICABILITY
3 Ignition off.
Disconnect the Brake Switch Connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on with engine not running.
Monitor Brake Switch status on the DRB while performing the next step.
Connect a jumper across the Brake Switch Circuit to Ground Circuit.
Did the DRB change from9pressed9to9released9?All
Ye s®Replace or adjust the Brake Switch.
Perform Powertrain Verification Test VER-2A.
No®Go To 4
4 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.
5 Ignition Off
Disconnect the Powertrain Control Module.
Disconnect the Brake Switch Connector.
Note: Check connectors - Clean/repair as necessary.
With an Ohmmeter, measure the Brake Switch Sense Circuit resistance from the
PCM to the Brake Switch Connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 6
No®Repair the Brake Switch Sense Circuit for an open.
Perform Powertrain Verification Test VER-2A.
6 Ignition Off
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Is any terminal damaged, pushed out, or miswired?All
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-2A.
No®Go To 7
7 Ignition Off
Disconnect the Powertrain Control Module.
Disconnect the Brake Switch Connector.
Note: Check connectors - Clean/repair as necessary.
With an Ohmmeter, measure the Brake Switch Sense Circuit to a good ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the Brake Switch Sense Circuit for a short to ground.
Perform Powertrain Verification Test VER-2A.
No®Go To 8
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P-0703 BRAKE SWITCH STUCK PRESSED OR RELEASED ÐContinued
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Symptom:
P-1195 SLOW 1/1 O2S DURING CATALYST MONITOR
When Monitored and Set Condition:
P-1195 SLOW 1/1 O2S DURING CATALYST MONITOR
When Monitored: With the engine running, coolant greater than 76 deg C (170 deg F),
open throttle, steady to slight increasing vehicle speed > 28 Km/h (18 mph) < 88 Km/h (55
mph), with a light load on the engine, for a period no less than five minutes.
Set Condition: The upstream oxygen sensor signal voltage is switching from below 0.39
volt to above 0.6 volt and back fewer times than required.
POSSIBLE CAUSES
OXYGEN SENSOR GROUND CIRCUIT OPEN
1/1 OXYGEN SENSOR CONNECTOR OBSERVABLE DEFECT
1/1 OXYGEN SENSOR DEFECTIVE
ENGINE FLUID CONSUMPTION
EXHAUST SYSTEM LEAKING
PCM CONNECTOR OBSERVABLE DEFECT
TEST ACTION APPLICABILITY
1 Start Engine
Note: Check the Exhaust for excessive smoke caused by oil or coolant
consumption.
Is there an oil or coolant consumption condition present?All
Ye s®Repair engine mechanical as necessary, and replace Upstream O2
Sensor.
Perform Powertrain Verification Test VER-5A.
No®Go To 2
2 Start Engine
Check the Exhaust System for leaks between Engine and Catalytic Converter.
Is there any Exhaust leak?All
Ye s®Repair or replace leaking Exhaust parts as necessary.
Perform Powertrain Verification Test VER-5A.
No®Go To 3
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Symptom:
P-1281 ENGINE IS COLD TOO LONG
When Monitored and Set Condition:
P-1281 ENGINE IS COLD TOO LONG
When Monitored: Ignition key on, engine not running. Ambient temperature greater
than þ11ÉC (-11ÉF) and coolant temperature greater than þ7ÉC (19ÉF)
Set Condition: The engine does not warm to 79 degrees C (176 degrees F) while driving
for 20 minutes after start.
POSSIBLE CAUSES
ENGINE COLD TOO LONG
TEST ACTION APPLICABILITY
1 Start Engine
Drive vehicle under normal driving conditions for 20 minutes.
With the DRB, read Engine Coolant Temperature.
Did the engine warm to 79 degrees C (176 degrees F)?All
Ye s®Test Complete.
No®See pertinent service manual information for cooling system
diagnostics.
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Symptom:
P1282 FUEL PUMP RELAY CONTROL CIRCUIT
When Monitored and Set Condition:
P±1282 FUEL PUMP RELAY CONTROL CIRCUIT
When Monitored: With the ignition key on and battery voltage greater than 10 volts.
Set Condition: An open or shorted condition is detected in the fuel pump relay control
circuit.
POSSIBLE CAUSES
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
FUEL PUMP RELAY DEFECTIVE
FUEL PUMP RELAY CONTROL CIRCUIT OPEN
FUEL PUMP RELAY CONTROL CIRCUIT SHORT TO GROUND
FUEL PUMP RELAY WIRING HARNESS INTER DEF
FUEL PUMP RELAY WIRING HARNESS OBS DEF
PCM DEFECTIVE
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, actuate the Fuel Pump Relay.
Is the Fuel Pump Relay clicking?All
Ye s®Go To 2
No®Go To 4
2 Ignition On, Engine Not Running
With the DRB actuate the Fuel Pump Relay.
Wiggle the Wiring Harness from the Relay to the PCM.
Did the Fuel Pump Relay clicking stop or become erratic while wiggling the wires?All
Ye s®Repair Circuit as necessary where wiggling caused the clicking to
become erratic.
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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