Dodge Caliber. Manual - part 830

P1115-GENERAL TEMPERATURE RATIONALITY

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
With the ignition on and battery voltage greater than 10 volts.

•

Set Condition:
AAT, ECT, and IAT sensor inputs are compared during a cold start. After start up, the values are monitored. If
one of the readings is not plausible for two consecutive trips, a DTC is stored. Three good trips turns off the
MIL.

Possible Causes

SENSOR SIGNAL CIRCUIT HIGH RESISTANCE

SENSOR GROUND CIRCUIT HIGH RESISTANCE

TEMPERATURE SENSOR

POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).

Diagnostic Test

ACTIVE DTC

Ignition on, engine not running.

With a scan tool, select View DTCs.

NOTE: Diagnose and repair any AAT, ECT, and IAT sensor DTCs before continuing with this test.

NOTE: Diagnose and repair P1607 PCM INTERNAL SHUTDOWN TIMER SLOW RATIONALITY or P2610 PCM
INTERNAL SHUTDOWN TIMER FAST RATIONALITY if either code is set before continuing with this test.

NOTE: Using an unapproved block heater in cold temperatures may cause this DTC to set. No repair is
required.

Is the status Active for this DTC?

Yes

>> Go to 2

>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -

DIAGNOSIS AND TESTING)

TEMPERATURE SENSOR CIRCUIT VALUE IMPLAUSIBLE

NOTE: Allow the engine sit for 6 - 8 hours before testing.
With a scan tool, monitor the AAT, ECT, and IAT sensor values.

Start the engine.

Allow the engine to reach normal operating temperature.

Does the value for each of the sensors increase smoothly and as expected?

Yes

>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -

DIAGNOSIS AND TESTING)

>> Go to 3

ENGINE ELECTRICAL DIAGNOSTICS - GPEC

9 - 607

TEMPERATURE SENSOR

NOTE: If it is necessary to replace the AAT sensor, be sure to drive the vehicle over 30 MPH for at least 5
minutes to update the AAT value.
Ignition on, engine not running.

Disconnect the harness connector for the sensor that had a value which did not increase smoothly and as expected.

With the scan tool, read the sensor voltage with the connected disconnected.

NOTE: The sensor voltage should be approximately 5.0 volts with the connector disconnected.
Connect a jumper wire between the sensor signal circuit and the sensor ground circuit in the harness connector.

With the scan tool, read the sensor voltage with the jumper wire in place.

NOTE: The sensor voltage should be approximately 0 volts with the jumper wire in place.

Does the sensor voltage change as described?

Yes

>> Replace the sensor.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

>> Go to 4

SENSOR SIGNAL CIRCUIT HIGH RESISTANCE

Turn the ignition off.

For the AAT sensor, disconnect the TIPM harness connector. Otherwise disconnect the PCM harness connector.

Measure the resistance of the sensor signal circuit from the sensor harness connector to the module harness con-
nector.

Is the resistance above 5.0 ohms.

Yes

>> Repair the sensor signal circuit for high resistance.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

>> Go to 5

SENSOR GROUND CIRCUIT HIGH RESISTANCE

Measure the resistance of the sensor ground circuit from the sensor harness connector to the module harness con-
nector.

Is the resistance above 5.0 ohms.

Yes

>> Repair the sensor ground circuit for high resistance.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

>> Go to 6

POWERTRAIN CONTROL MODULE (PCM)

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the sensor and the Pow-
ertrain Control Module (PCM).

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 PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

>> Replace and program the Powertrain Control Module per Service Information.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

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ENGINE ELECTRICAL DIAGNOSTICS - GPEC

P1277-STARTER CONTROL CIRCUIT 2 LOW (TIPM)

For a complete wiring diagram Refer to Section 8W.

ENGINE ELECTRICAL DIAGNOSTICS - GPEC

9 - 609

•

When Monitored:
With the ignition on. Battery voltage greater than 10.4 volts and Main Relay is on. TIPM requesting Starter
operation.

•

Set Condition:
Actual Starter state is not equal to desired state. One Trip Fault. Three good trips to turn off the MIL.

Possible Causes

(T750) STARTER CONTROL OUTPUT CIRCUIT SHORTED TO GROUND

STARTER

TIPM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).

Diagnostic Test

DTC IS ACTIVE

NOTE: If P0615, P0616 or P0617 has set along with this DTC, diagnose those DTC(s) first before continuing.
Ignition on, engine not running.

With the scan tool, select View DTCs.

Is the status Active for this DTC?

Yes

>> Go To 2

>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -

DIAGNOSIS AND TESTING)

STARTER CONTROL OUTPUT OPERATION

Turn the ignition off.

Disconnect the Starter (1-way) harness connector.

With a 12-volt test light connected to ground, probe the (T750) Starter Control Output circuit in the Starter (1-way)
harness connector

WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands
near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in
personal injury or death.
Crank the engine and monitor the test light.

NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connec-
tion to the battery.

Does the test light illuminate brightly?

Yes

>> Replace the Starter in accordance with the Service Information.

Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

>> Go To 3

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ENGINE ELECTRICAL DIAGNOSTICS - GPEC

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