Dodge Caliber. Manual — part 1014
4.
(K23) ACCELERATOR PEDAL POSITION SENSOR 1 SIGNAL CIRCUIT SHORTED TO THE SENSOR
GROUND CIRCUIT
Measure the resistance between the (K23) Accelerator Pedal Position
Sensor 1 Signal circuit and the (K167) Accelerator Pedal Position Sen-
sor 1 Sensor Ground circuit in the Accelerator Pedal Position Sensor
harness connector.
Measure the resistance between the (K23) Accelerator Pedal Position
Sensor 1 Signal circuit and the (K400) Accelerator Pedal Position Sen-
sor 2 Sensor Ground circuit in the Accelerator Pedal Position Sensor
harness connector.
Is the resistance between ground and both of the circuits
above 1000 ohms?
Yes
>> Go to 5
No
>> Repair the appropriate circuit for a short to ground.
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
5.
ACCELERATOR PEDAL POSITION SENSOR
Turn the ignition off.
Connect the Engine Control Module (ECM) harness connector.
Connect a jumper wire between the (K852) Accelerator Pedal Position
Sensor 1 5 Volt Supply circuit and the (K23) Accelerator Pedal Position
Sensor 1 Signal circuit in the Accelerator Pedal Position Sensor harness
connector.
Turn the ignition on.
With the scan tool, Clear DTCs.
Fully depress and release the Accelerator Pedal several times.
With the scan tool, select View DTCs.
NOTE: The scan tool should display an Accelerator Pedal Position
Sensor 1 high voltage or open DTC with the Accelerator Pedal
Position Sensor connector disconnected.
Does the scan tool display the DTC as described above?
Yes
>> Replace the Accelerator Pedal Position Sensor in accor-
dance with the Service Information.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No
>> Go to 6
PM
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1343
6.
ENGINE CONTROL MODULE (ECM)
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Accelerator Pedal
Position Sensor and the Engine Control Module (ECM).
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out or corroded terminals.
Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
Look for the data to change or for the DTC to reset during the wiggle test.
Refer to any Technical Service Bulletins that may apply.
Were any problems found?
Yes
>> Repair as necessary.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No
>> Replace the Engine Control Module (ECM) in accordance with the Service Information.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
9 - 1344
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
PM
P2123-ACCELERATOR PEDAL POSITION SENSOR 1 CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W
PM
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1345
•
When Monitored:
With the ignition on.
•
Set Condition:
The APP Sensor #1 signal circuit is above 4.6 volts for 0.32 seconds.
Possible Causes
INTERMITTENT DTC
(K852) ACCELERATOR PEDAL POSITION SENSOR 1 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
(K23) ACCELERATOR PEDAL POSITION SENSOR 1 SIGNAL CIRCUIT SHORTED TO VOLTAGE
(K167) ACCELERATOR PEDAL POSITION SENSOR 1 SENSOR GROUND CIRCUIT SHORTED TO VOLTAGE
(K23) ACCELERATOR PEDAL POSITION SENSOR 1 SIGNAL CIRCUIT SHORTED TO THE (K852)
ACCELERATOR PEDAL POSITION SENSOR 1 5 VOLT SUPPLY CIRCUIT OR (F856) ACCELERATOR PEDAL
POSITION SENSOR 2 5 VOLT SUPPLY CIRCUIT
(K852) ACCELERATOR PEDAL POSITION SENSOR 1 5 VOLT SUPPLY CIRCUIT OPEN OR HIGH
RESISTANCE
(K23) ACCELERATOR PEDAL POSITION SENSOR 1 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
(K167) ACCELERATOR PEDAL POSITION SENSOR 1 SENSOR GROUND CIRCUIT OPEN OR HIGH
RESISTANCE
ACCELERATOR PEDAL POSITION SENSOR
ENGINE CONTROL MODULE (ECM)
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.
DTC IS ACTIVE
NOTE: If any Sensor reference or supply voltage DTCs are present, perform the applicable diagnostic pro-
cedure before continuing with this test.
NOTE: The APP Sensor is a device that contains two separate potentiometer type sensors. Each sensor has
its own 5-volt supply circuit, sensor ground circuit and signal circuit. The APP Sensor no longer incorpo-
rates a low-idle switch.
NOTE: The APP Sensor 2 signal should always be approximately 1/2 the voltage of the APP Sensor 1 signal.
Ignition on, engine not running.
With the scan tool, Clear DTCs in the Engine Control Module (ECM).
Fully depress and release the Accelerator Pedal several times.
With the scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
>> Go To 2
No
>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
9 - 1346
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
PM
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