Chrysler Crossfire. Manual — part 476
(P0113) INTAKE AIR TEMPERATURE SENSOR CIRCUIT HIGH (SRT) (CONTINUED)
When Monitored and Set Condition
•
When Monitored: With the ignition on.
•
Set Condition: An improper voltage level has been detected by the Powertrain Control Module (PCM) on the
Intake Air Temperature Sensor Signal circuit.
POSSIBLE CAUSES
IAT SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE
IAT SENSOR SIGNAL CIRCUIT SHORT TO GROUND
IAT SENSOR SIGNAL CIRCUIT SHORT TO SENSOR GROUND CIRCUIT
IAT SENSOR SIGNAL CIRCUIT OPEN
SENSOR GROUND CIRCUIT OPEN
INTAKE AIR TEMPERATURE SENSOR
POWERTRAIN CONTROL MODULE
For a complete Powertrain Control Module Circuit Diagram, (Refer to 9 - ENGINE - SCHEMATICS AND DIA-
GRAMS).
Diagnostic Test
1.
PRE-DIAGNOSTIC CHECK OUT
Note: Always perform diagnostics with a fully charged battery.
Note: Check connectors — Clean/repair as necessary. Poor pin to
terminal connections can set DTCs.
Note: Check for applicable TSBs related to the problem.
Turn the ignition on.
With the DRB III
T
, read PCM DTCs.
Using the wiring diagram/schematic as a guide, inspect the wiring and
connectors. Repair as necessary.
Perform this procedure prior to symptom diagnosis.
Continue
Go To 2
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(P0113) INTAKE AIR TEMPERATURE SENSOR CIRCUIT HIGH (SRT) (CONTINUED)
2.
CHECK FOR CURRENT DTC
Note: If the PCM detects and stores a DTC, the PCM also stores
the engine/vehicle operating conditions under which the DTC was
set. Some of these conditions are displayed on the DRB III
T
at the
same time the DTC is displayed.
Note: Before erasing stored DTCs, record these conditions.
Attempting to duplicate these conditions may assist when check-
ing for a DTC.
With the ignition on.
With the DRB III
T
, erase PCM DTCs.
Note: It maybe necessary to road test the vehicle for this DTC to
set.
With the DRB III
T
, read PCM DTCs.
Did this DTC set again?
Yes
>> Go To 3
No
>> Go To 10
3.
CHECK FOR IAT SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE
Turn the ignition off.
Disconnect the Intake Air Temperature Sensor harness connector.
Note: Check connectors — Clean/repair as necessary.
Turn the ignition on.
With the DRB III
T
, erase PCM DTCs.
Note: It maybe necessary to road test the vehicle for this DTC to
set.
With the DRB III
T
, read PCM DTCs.
Is DTC P0113 INTAKE AIR TEMPERATURE SENSOR CIRCUIT
HIGH present?
Yes
>> Go To 4
No
>> Go To 8
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(P0113) INTAKE AIR TEMPERATURE SENSOR CIRCUIT HIGH (SRT) (CONTINUED)
4.
MEASURE THE VOLTAGE OF THE IAT SENSOR SIGNAL CIRCUIT
Turn the ignition off.
Disconnect the PCM C3 harness connector.
Note: Check connectors — Clean/repair as necessary.
Turn the ignition on.
Measure the voltage of the IAT Sensor Signal circuit at the IAT Sensor
harness connector.
Is the voltage below 1.0 volt?
Yes
>> Go To 5
No
>> Repair the IAT Sensor Signal circuit for a short to voltage.
Perform the POWERTRAIN VERIFICATION TEST - VER
2.
5.
IAT SENSOR SHORT INTERNALLY
Turn the ignition off.
Reconnect the PCM C3 harness connector.
Connect a jumper wire between IAT Sensor harness connector cavities
1 and 2.
Turn the ignition on.
With the DRB III
T
, erase PCM DTCs.
Note: It maybe necessary to road test the vehicle for this DTC to
set.
With the DRB III
T
, read PCM DTCs.
Is DTC P0112 INTAKE AIR TEMPERATURE SENSOR CIRCUIT
LOW present?
Yes
>> Replace the Intake Air Temperature Sensor. (Refer to 14 -
FUEL SYSTEM/FUEL INJECTION/INTAKE AIR TEMPERATURE SENSOR - REMOVAL).
Perform the POWERTRAIN VERIFICATION TEST - VER 2.
No
>> Go To 6
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(P0113) INTAKE AIR TEMPERATURE SENSOR CIRCUIT HIGH (SRT) (CONTINUED)
6.
MEASURE THE RESISTANCE OF THE IAT SENSOR SIGNAL CIRCUIT
Turn the ignition off.
Disconnect the PCM C3 harness connector.
Note: Check connectors — Clean/repair as necessary.
Measure the resistance of the IAT Sensor Signal circuit from the IAT
harness connector to the PCM C3 harness connector.
Is the resistance below 5.0 ohms?
Yes
>> Go To 7
No
>> Repair the IAT Sensor Signal circuit for an open.
Perform the POWERTRAIN VERIFICATION TEST - VER
2.
7.
MEASURE THE RESISTANCE OF THE SENSOR GROUND CIRCUIT
With the ignition off.
Measure the resistance of the Sensor Ground circuit from the IAT har-
ness connector to the PCM C3 harness connector.
Is the resistance below 5.0 ohms?
Yes
>> Replace and program the Powertrain Control Module.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/POWERTRAIN
CONTROL
MODULE
-
REMOVAL).
Perform the POWERTRAIN VERIFICATION TEST - VER
2.
No
>> Repair the Sensor Ground circuit for an open.
Perform the POWERTRAIN VERIFICATION TEST - VER
2.
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