2000 CHRYSLER VOYAGER check engine

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-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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DRIVEABILITY
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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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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TEST ACTION APPLICABILITY
3 Ignition off.
Remove the Throttle Body per service information procedure.
Note: Clean Throttle Body in a well ventilated area and wear rubber gloves.
While holding the Throttle open spray entire Throttle Body Bore with Mopar parts
cleaner.
Using a soft scuff pad, clean the Throttle Body Bore and Throttle Plate.
Using compressed air, dry the Throttle Body and install Throttle Body on Manifold.
Reconnect IAC Motor Connector and reset the IAC Motor Steps with the DRB.
Start engine and let idle.
With the DRB, actuate the minimum air flow.
Is the idle RPM within the range shown in the chart? Refer to the Service
Information.All
Ye s®Test Complete.
No®Replace the Throttle Body.
Perform Powertrain Verification Test VER-5A.
4 Ignition Off
Start engine, allow engine idle to stabilize for 60 seconds.
With the DRB, read target idle and engine RPM.
Is the engine RPM within +200/-100 RPM of target idle?All
Ye s®Go To 5
No®Go To 8
5 Ignition Off
Remove the IAC Motor from the housing.
Turn Ignition on with Engine Not Running.
With the DRB, actuate the IAC Stepper Motor.
Wiggle the Wiring Harness from the IAC Motor to the PCM.
Did the IAC stop operating at any time?All
Ye s®Repair the Harness or Connectors as necessary.
Perform Powertrain Verification Test VER-5A.
No®Go To 6
6 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®Go To 7
7 Ignition On, Engine Not Running
Check Throttle Plate and Linkage for a binding condition.
The Throttle Linkage must be free and the Throttle Plate at the idle
position.
Ensure Throttle Plate is fully closed and against its stop.
Is the Throttle Plate and Linkage okay?All
Ye s®Test Complete.
No®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
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DRIVEABILITY
P-1294 TARGET IDLE NOT REACHED ÐContinued
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TEST ACTION APPLICABILITY
8 Ignition Off
Start engine, allow engine idle to stabilize for 60 seconds.
With the engine running at idle, the DRB in Systems Test, perform the IAC wiggle
test.
The idle speed should raise and lower with the display.
Does the RPM raise and lower correctly?All
Ye s®Go To 9
No®Refer to symptom P-0505 IDLE AIR CONTROL MOTOR CIR-
CUITS in the DRIVEABILITY category.
9 Ignition Off
Start engine, allow engine idle to stabilize for 60 seconds.
Check engine Vacuum Hoses and Components for vacuum leaks.
Ensure PCV Valve is the correct part and is operating correctly.
Were any problems found?All
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
No®Go To 10
10 Ignition Off
Remove the IAC Motor from the housing.
Turn Ignition on with Engine Not Running.
With the DRB, actuate the IAC Stepper Motor.
Wiggle the Wiring Harness from the IAC Motor to the PCM.
Did the IAC stop operating at any time?All
Ye s®Repair the Harness or Connectors as necessary.
Perform Powertrain Verification Test VER-5A.
No®Go To 11
11 Ignition On, Engine Not Running
Check Throttle Plate and Linkage for a binding condition.
The Throttle Linkage must be free and the Throttle Plate at the idle
position.
Ensure Throttle Plate is fully closed and against its stop.
Is the Throttle Plate and Linkage okay?All
Ye s®Go To 12
No®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
12 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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DRIVEABILITY
P-1294 TARGET IDLE NOT REACHED ÐContinued
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Symptom:
P-1297 NO CHANGE IN MAP FROM START TO RUN
When Monitored and Set Condition:
P-1297 NO CHANGE IN MAP FROM START TO RUN
When Monitored: Engine is idling with a stable RPM (RPM fluctuation < 64 RPM) and
the vehicle is not moving.
Set Condition: Too small a difference is seen between barometric pressure at ignition on
and manifold vacuum.
POSSIBLE CAUSES
MAP SENSOR 5-VOLT SUPPLY CIRCUIT OPEN
MAP SENSOR WIRING HARNESS INTERMITTENT DEF
VACUUM PORTS RESTRICTED OR DEFECTIVE
MANIFOLD ABSOLUTE PRESSURE SENSOR RESTRICTED
MAP SENSOR DEFECTIVE (A)
MAP SENSOR DEFECTIVE (B)
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, read codes
Is9MAP Sensor voltage too low9code set?All
Ye s®Refer to symptom P-0107 MAP SENSOR VOLTAGE TOO LOW in
the DRIVEABILITY category.
No®Go To 2
2 With the DRB erase Codes.
Ignition On, Engine Not Running
Start engine and allow engine to idle for 30 seconds.
With the DRB read codes.
Does the DRB show9No change in MAP from start to run9?All
Ye s®Go To 3
No®Go To 6
3 Ignition on, with engine not running.
Disconnect MAP Sensor.
Note:Check connectors - clean/repair as necessary.
Ignition on, with engine not running.
Using a Voltmeter, measure the MAP Sensor 5-Volt Supply Circuit at the MAP
Sensor Connector.
Is the voltage above 4.0 volts?All
Ye s®Go To 4
No®Repair the open MAP Sensor 5-volt Supply Circuit.
Perform Powertrain Verification Test VER-5A.
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