Dodge Caliber. Manual - part 1210

Theory of Operation

The Transmission Range Sensor (TRS) has a contact point for each shift lever position. The Transmission Control
Module (TCM) monitors the signal from the TRS which specifies the shift lever position. The TCM also broadcast
the shift lever position over the CAN BUS to other modules.

•

When Monitored:
Ignition on with system voltage between 9.0 and 16.0 volts.
No other Transmission Range Sensor (TRS) DTCs present.

•

Set Condition:
When the Transmission Control Module (TCM) receives more than one Transmission Range Sensor (TRS)
signal from the TRS continuously for the period of 2.0 seconds.

Possible Causes

TRS SENSE CIRCUIT SHORT TO VOLTAGE

TWO TRS SENSE CIRCUITS SHORTED TOGETHER

TRANSMISSION RANGE SENSOR

TRANSMISSION CONTROL MODULE

Always perform the CVT Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT - STANDARD PROCEDURE)

Diagnostic Test

CHECK TO SEE IF THE DTC IS ACTIVE

With the scan tool, read Transmission DTCs.

Is the status Active for this DTC or is the STARTS SINCE SET counter 2 or less?

Yes

>> Go To 2

>> Go To 5

CHECK THE TRS READINGS ON THE SCAN TOOL

SHIFT LEVER POSITION TO TRS SWITCH STATE

PARK

REVERSE

NEUTRAL

DRIVE

LOW

T41 CLOSED

T42 CLOSED

T4 CLOSED

T3 CLOSED

T1 CLOSED

Ignition on, engine not running.

With the scan tool, read the TRS states while moving the shift lever to all positions note any circuits may close at
the same time.

Did one or more TRS Sense circuits show being closed at the same time?

Yes

>> Go To 3

>> Check the Shift Lever Cable for proper adjustment and binding per the Service Information. If no prob-

lems are found, using the schematics as a guide, check the Transmission Control Module (TCM) ter-
minals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground
circuits. Check for any Service Bulletins for possible causes that may apply. If again no problems are
found, replace the TCM per the Service Information

Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)

AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS

21 - 139

CHECK THE TRS SENSE CIRCUIT FOR A SHORT TO VOLTAGE

Turn the ignition off to the lock position.

Disconnect the TRS harness connector.

NOTE: The possibility of erroneous DTCs may set due to disconnection of the TRS harness connector. Dis-
regard any additional DTCs that may set.
Ignition on, engine not running.

Using the scan tool, read the TRS Sense circuit states.

Do any of the TRS Sense circuits read closed?

Yes

>> Repair the identified TRS Sense circuit for a short to voltage.

Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)

>> Go To 4

CHECK THE TRS SENSE CIRCUIT FOR A SHORT TO ANOTHER TRS SENSE CIRCUIT

Turn the ignition off to the lock position.

Disconnect the TCM C1 and C2 harness connectors.

Measure the resistance between the two identified TRS Sense circuits in the second step.

Is the resistance below 5.0 ohms?

Yes

>> Repair the identified TRS Sense circuits for a short to each other.

Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)

>> Replace the TRS Assembly per the Service Information.

Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)

INTERMITTENT WIRING AND CONNECTORS

The conditions necessary to set this DTC are not present at this time.

Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.

Wiggle the wires while checking for shorted and open circuits.

Were there any problems found?

Yes

>> Repair as necessary.

Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)

>> Test Complete.

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AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS

P0711-TRANSMISSION TEMPERATURE SENSOR PERFORMANCE

For a complete wiring diagram Refer to Section 8W.

AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS

21 - 141

Theory of Operation

The Transmission Control Module (TCM) monitors the Transmission Temperature Sensor Signal circuit for voltage
changes within desired limits. The TCM calculates the transmission fluid temperature from the temperature sensor
signal voltage. This value is used in conjunction with various other inputs to calibrate different operating modes such
as Torque Converter lock-up and Torque reduction.

The Transmission Temperature Sensor is a thermistor that changes resistive value when subject to different tem-
peratures. When the monitored voltage rises, the calculated temperature decreases.

•

When Monitored:
Condition one : Transmission in a valid forward gear.
System voltage between 9.0 and 16.0 volts.
Vehicle speed greater than 10 Km/h (6 mph).
Accelerator Pedal Position (APP) greater than 12.5%.
Engine rpm greater than 450 rpm.
Condition two: Ignition off for greater than 8 hours.
Difference between the engine coolant temperature and the intake temperature is less than 3° C (37° F).
No other temperature sensor or sensor ground DTCs present.

•

Set Condition:
Condition one: No change in the Transmission oil temperature the period of 10 minutes.
Condition two: Transmission oil temperature is 40° C (104° F) different than the average temperature which
consists of the combined average of the Engine Coolant temperature, Intake Temperature, Oil Temperature,
and Ambient Temperature for the period of 5 seconds.

Possible Causes

TRANSMISSION TEMPERATURE SENSOR

TRANSMISSION CONTROL MODULE

Always perform the CVT Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT - STANDARD PROCEDURE)

Diagnostic Test

CHECK FOR ENGINE DTCS

With the scan tool, read Engine DTCs.

Are there any Engine Temperature Sensor DTCs present?

Yes

>> Refer to the Engine Diagnostic and Testing category and perform the appropriate symptom(s).

Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)

>> Go To 2

CHECK TO SEE IF THE DTC IS ACTIVE

With the scan tool, read Transmission DTCs.

Is the status Active for this DTC or is the STARTS SINCE SET counter 2 or less?

Yes

>> Go To 3

>> Go To 7

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AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS

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