Dodge Dakota (R1). Manual — part 833
Symptom:
P0113-INTAKE AIR TEMP SENSOR VOLTAGE HIGH
When Monitored and Set Condition:
P0113-INTAKE AIR TEMP SENSOR VOLTAGE HIGH
When Monitored:
With the ignition on and battery voltage greater than 10.4 volts.
Set Condition:
The intake air temperature (IAT) sensor circuit voltage at the PCM goes
above 4.9 volts.
POSSIBLE CAUSES
INTERMITTENT CONDITION
IAT SENSOR INTERNAL FAILURE
IAT SENSOR SIGNAL CIRCUIT OPEN
SENSOR GROUND CIRCUIT OPEN
IAT SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
PCM
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, read DTCs.
Is the Good Trip Counter for P0113 displayed and equal to zero?
All
Yes
→
No
→
2
Turn the ignition on.
With the DRBIII
t, read the IAT voltage.
Is the voltage above 4.6 volts?
All
Yes
→
No
→
3
Turn the ignition off.
Disconnect the IAT Sensor harness connector.
Start the engine and allow it to idle.
Measure the voltage of the IAT Sensor Signal circuit.
Is the voltage above 5.5 volts?
All
Yes
→
Repair the IAT Sensor Signal circuit for a short to voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
64
DRIVEABILITY - GAS
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the IAT harness connector.
Connect a jumper wire between the IAT Sensor Signal circuit and the Sensor ground
circuit in the IAT harness connector.
Turn the ignition on.
With the DRBIII
t, read IAT voltage.
Is the voltage below 1.0 volt?
All
Yes
→
Repair the IAT Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
5
Turn the ignition off.
Disconnect the IAT Sensor harness connector.
Disconnect the PCM harness connector(s).
Measure the resistance of the IAT Sensor Signal circuit between the IAT Sensor
harness connector and the PCM harness connector.
Is the resistance below 5 ohms?
All
Yes
→
No
→
Repair the IAT Sensor Signal circuit for an open.
POWERTRAIN VERIFICATION TEST VER - 5.
6
Turn the ignition off.
Disconnect the IAT Sensor harness connector.
Disconnect the PCM harness connector(s).
Measure the resistance of the Sensor ground circuit in the IAT Sensor harness
connector to ground.
Is the resistance below 5 ohms?
All
Yes
→
No
→
Repair the Sensor ground circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
7
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
65
DRIVEABILITY - GAS
P0113-INTAKE AIR TEMP SENSOR VOLTAGE HIGH —
Continued
TEST
ACTION
APPLICABILITY
8
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRBIII
t
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DRBIII
t Freeze Frame information. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
All
Yes
→
Repair as necessary
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
Test Complete.
66
DRIVEABILITY - GAS
P0113-INTAKE AIR TEMP SENSOR VOLTAGE HIGH —
Continued
Symptom:
P0117-ECT SENSOR VOLTAGE TOO LOW
When Monitored and Set Condition:
P0117-ECT SENSOR VOLTAGE TOO LOW
When Monitored:
With the ignition on and battery voltage greater than 10.4 volts.
Set Condition:
The Engine Coolant Temperature (ECT) sensor circuit voltage at the PCM
goes below 0.8 volt for more than 3 seconds.
POSSIBLE CAUSES
INTERMITTENT CONDITION
ECT SENSOR INTERNAL FAILURE
ECT SENSOR SIGNAL SHORTED TO GROUND
ECT SENSOR SIGNAL SHORTED TO SENSOR GROUND CIRCUIT
PCM
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, read DTCs.
Is the Good Trip Counter for P0117 displayed and equal to zero?
All
Yes
→
No
→
2
Turn the ignition off.
Disconnect the ECT harness connector.
Turn the ignition on.
With the DRBIII
t, read ECT voltage.
Is the voltage above 1.0 volt?
All
Yes
→
Replace the ECT Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
3
Turn the ignition off.
Disconnect the ECT Sensor harness connector.
Disconnect the PCM harness connector(s).
Measure the resistance of the ECT Sensor Signal circuit in the ECT Sensor harness
connector to ground.
Is the resistance below 5 ohms?
All
Yes
→
Repair the ECT Sensor Signal circuit for a short to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
67
DRIVEABILITY - GAS
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