2000 CHRYSLER VOYAGER sensor

Symptom:
P-0112 INTAKE AIR TEMP SENSOR VOLTAGE LOW
When Monitored and Set Condition:
P-0112 INTAKE AIR TEMP SENSOR VOLTAGE LOW
When Monitored: With the ignition on and the engine running.
Set Condition: The intake air sensor circuit voltage at PCM cavity 37 goes below .51 volt.
POSSIBLE CAUSES
IAT SEN WIRING HARNESS INTERMITTENT DEFECT
IAT SEN WRING HARNESS OBSERVABLE DEFECT
SENSOR SIGNAL CIRCUIT SHORT TO GROUND
SENSOR SIGNAL CIRCUIT SHORT TO SENSOR GND CIRCUIT
IAT SENSOR VOLTAGE GREATER THAN 4.0 VOLTS
PCM DEFECTIVE (IAT SENSOR)
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, read the IAT Sensor voltage.
Is the IAT Sensor voltage below 0.5 volt?All
Ye s®Go To 2
No®Go To 6
2 Ignition Off
Disconnect the IAT Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Ignition On, Engine Not Running
With the DRB, read the IAT Sensor voltage.
Is the IAT Sensor voltage above 4.0 volts?All
Ye s®Replace the IAT Sensor.
Perform Powertrain Verification Test VER-5A.
No®Go To 3
3 Ignition Off
Disconnect the IAT Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the PCM Connector.
Check connectors - Clean/repair as necessary.
Using an ohmmeter, measure the Sensor Signal Circuit to ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the Sensor Signal Circuit for a short to ground.
Perform Powertrain Verification Test VER-5A.
No®Go To 4
34
DRIVEABILITY
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TEST ACTION APPLICABILITY
4 Ignition Off
Disconnect the IAT Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the PCM Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure between the Sensor Signal and Sensor Ground
Circuits.
Is the resistance below 5.0 ohms?All
Ye s®Repair the Sensor Signal Circuit shorted to Sensor Ground
Circuit.
Perform Powertrain Verification Test VER-5A.
No®Go To 5
5 If there are no potential causes remaining, the PCM (IAT Sensor) is assumed to be
defective.
View repair options.All
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-5A.
6 Ignition On, Engine Not Running
Use the schematic as a guide and wiggle the Sensor Connector and Harness.
Monitor the DRB display.
Was there any IAT Sensor voltage change?All
Ye s®Repair the Harness or Connector that caused the voltage change.
Perform Powertrain Verification Test VER-5A.
No®Go To 7
7 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.
35
DRIVEABILITY
P-0112 INTAKE AIR TEMP SENSOR VOLTAGE LOW ÐContinued
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Symptom:
P-0113 INTAKE AIR TEMPERATURE SENSOR VOLT HIGH
When Monitored and Set Condition:
P-0113 INTAKE AIR TEMPERATURE SENSOR VOLT HIGH
When Monitored: With the ignition on and the engine running.
Set Condition: The intake air sensor circuit voltage at PCM cavity 37 goes above 4.9 volts.
POSSIBLE CAUSES
IAT SENSOR DEFECTIVE
IAT SENSOR SIGNAL CIRCUIT OPEN
SENSOR GROUND CIRCUIT OPEN
IAT SENSOR WIRING HARNESS INTERMITTENT DEFECT
IAT SENSOR WIRING HARNESS OBSERVABLE DEFECT
PCM DEF (IAT SENSOR)
TEST ACTION APPLICABILITY
1 Ignition on with engine not running.
Read the IAT Sensor voltage.
Is the IAT Sensor voltage above 4.5 volts?All
Ye s®Go To 2
No®Go To 6
2 Ignition Off.
Disconnect the IAT Sensor.
Check Connectors - clean/repair as necessary.
Ignition on with engine not running.
Connect the jumper wire between the IAT Signal and Sensor Ground Circuits.
With the DRB, read the IAT Sensor voltage.
Is the voltage below 1.0 volt?All
Ye s®Replace the IAT Sensor.
Perform Powertrain Verification Test VER-5A.
No®Go To 3
3 Ignition Off
Disconnect the IAT Sensor Electrical Connector.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the IAT Signal Circuit and an engine ground.
Ignition on, engine not running.
Read the Intake Air Temperature Sensor voltage.
Is the voltage below 1.0 volt?All
Ye s®Go To 4
No®Repair the open Sensor Ground Circuit.
Perform Powertrain Verification Test VER-5A.
36
DRIVEABILITY
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TEST ACTION APPLICABILITY
4 Ignition Off
Disconnect the IAT Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the PCM Connector.
Note: Check Connectors - clean/repair as necessary.
With the Ohmmeter, measure the IAT Sensor Signal Circuit from the PCM to the IAT
Connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 5
No®Repair the open IAT Sensor Signal Circuit.
Perform Powertrain Verification Test VER-5A.
5 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-5A.
6 Ignition on with engine not running.
Use the schematic as a guide and wiggle the Sensor Connector and Harness.
Monitor DRB display.
Was there any IAT Sensor voltage change?All
Ye s®Repair the Harness or Connector that caused the voltage to
change.
Perform Powertrain Verification Test VER-5A.
No®Go To 7
7 Ignition off.
Using 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.
37
DRIVEABILITY
P-0113 INTAKE AIR TEMPERATURE SENSOR VOLT HIGH ÐContinued
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Symptom:
P-0117 ECT SENSOR VOLTAGE TOO LOW
When Monitored and Set Condition:
P-0117 ECT SENSOR VOLTAGE TOO LOW
When Monitored: With the ignition on.
Set Condition: The engine coolant temperature sensor circuit voltage at PCM cavity 26
goes below .5 volt for more than 3 seconds.
POSSIBLE CAUSES
ECT SENSOR VOLTAGE ABOVE 4.0 VOLTS
ECT SENSOR SIGNAL CIRCUIT SHORT TO GROUND
ECT SENSOR SIGNAL CIRCUIT SHORTED TO GROUND CKT
ECT WIRING HARNESS INTERMITTENT DEFECT
ECT WIRING HARNESS OBSERVABLE DEFECT
PCM DEFECTIVE (ECT SENSOR V LOW)
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, read the Engine Coolant Temperature (ECT) Sensor voltage.
Is the Engine Coolant Temperature Sensor voltage below 0.5 volt?All
Ye s®Go To 2
No®Go To 6
2 Ignition Off
Disconnect the Engine Coolant Temperature (ECT) Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
With the DRB, read the Engine Coolant Temperature Sensor voltage.
Is the ECT Sensor voltage above 4.0 volts?All
Ye s®Replace the Engine Coolant Temperature Sensor.
Perform Powertrain Verification Test VER-5A.
No®Go To 3
38
DRIVEABILITY
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TEST ACTION APPLICABILITY
3 Ignition Off
Disconnect the Engine Coolant Temperature Sensor (ECT) Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module Connector.
Note: Check connectors - Clean/repair as necessary.
With an ohmmeter, measure the resistance between the ECT Sensor Signal Circuit
and the ECT Sensor Ground Circuit.
Is the resistance below 5.0 ohms?All
Ye s®Repair the ECT Sensor Signal Circuit shorted to the ECT Sensor
Ground Circuit.
Perform Powertrain Verification Test VER-5A.
No®Go To 4
4 Ignition Off
Disconnect the Engine Coolant Temperature (ECT) Sensor Connector.
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 ECT Sensor Signal Circuit to ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the ECT Sensor Signal Circuit for a short to ground.
Perform Powertrain Verification Test VER-5A.
No®Go To 5
5 Ignition Off
If there are no potential causes remaining, the PCM is assumed to be defective.
View repair options.All
Repair
Replace the Powertrain Control Module.
Perform Powertrain Verification Test VER-5A.
6 Ignition On, Engine Not Running
Using the schematic, wiggle the ECT Sensor Connector and Harness.
Monitor the DRB display.
Was there any ECT Sensor voltage change?All
Ye s®Repair the Harness or Connector that caused the voltage change.
Perform Powertrain Verification Test VER-5A.
No®Go To 7
7 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.
39
DRIVEABILITY
P-0117 ECT SENSOR VOLTAGE TOO LOW ÐContinued
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Symptom:
P-0118 ECT SENSOR VOLTAGE TOO HIGH
When Monitored and Set Condition:
P-0118 ECT SENSOR VOLTAGE TOO HIGH
When Monitored: With the ignition on.
Set Condition: The engine coolant temperature sensor circuit voltage at PCM cavity 26
goes above 4.9 volts for more than 3 seconds.
POSSIBLE CAUSES
ECT SENSOR DEFECTIVE
ECT SENSOR GROUND CIRCUIT OPEN
ECT SENSOR SIGNAL CIRCUIT OPEN
ECT SENSOR WIRING HARNESS INTERMITTENT DEFECT
ECT SENSOR WIRING HARNESS OBSERVABLE DEFECT
PCM DEFECTIVE
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, read the ECT Sensor voltage.
Is the ECT Sensor voltage above 4.9 volts?All
Ye s®Go To 2
No®Go To 6
2 Ignition On, Engine Not Running
Disconnect the ECT Sensor.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the ECT Sensor Signal Circuit and the Sensor
Ground Circuit.
With the DRB, read the ECT Sensor voltage.
Is the voltage below 1.0 volt?All
Ye s®Replace the ECT Sensor.
Perform Powertrain Verification Test VER-5A.
No®Go To 3
40
DRIVEABILITY
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TEST ACTION APPLICABILITY
3 Ignition Off
Disconnect the ECT Sensor Electrical Connector.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the ECT Sensor Signal Circuit and an engine ground.
Turn the ignition on, with the engine not running.
With the DRB, read the Engine Coolant Temperature Sensor voltage.
Is the voltage below 1.0 volt?All
Ye s®Repair the open ECT Sensor Ground Circuit.
Perform Powertrain Verification Test VER-5A.
No®Go To 4
4 Ignition Off
Disconnect the ECT Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the PCM Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the ECT Sensor Signal Circuit from the PCM to the
ECT.
Is the resistance below 5.0 ohms?All
Ye s®Go To 5
No®Repair the open ECT Sensor Signal Circuit.
Perform Powertrain Verification Test VER-5A.
5 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-5A.
6 Ignition On, Engine Not Running
Use the schematic as a guide and wiggle the ECT Sensor Connector & Harness.
Monitor the DRB display.
Was there any ECT Sensor voltage change?All
Ye s®Repair the Harness or Connector that caused the voltage change.
Perform Powertrain Verification Test VER-5A.
No®Go To 7
7 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.
41
DRIVEABILITY
P-0118 ECT SENSOR VOLTAGE TOO HIGH ÐContinued
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