Dodge Dakota (ND). Manual — part 929

P0713-TRANSMISSION TEMPERATURE SENSOR HIGH (CONTINUED)

For the Transmission circuit diagram (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 42RLE - SCHE-
MATICS AND DIAGRAMS)

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
Continuously with the ignition on and engine running.

•

Set Condition:
The DTC will set when the monitored Temperature Sensor voltage rises above 4.94 volts for the period of 1.45
seconds. When the fault is set, calculated temperature is substituted for measured temperature, however the
fault code is stored only after three consecutive occurrences of the fault.

Possible Causes

(K900) SENSOR GROUND OPEN

(T54) TRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN

(T54) TRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE

TRANSMISSION TEMPERATURE SENSOR

POWERTRAIN CONTROL MODULE

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 42RLE - DIAGNOSIS AND TESTING).

Theory of Operation

The temperature sensor is used to sense the temperature of the transmission fluid. Transmission fluid temperature
can affect shift quality, torque converter operation and when or if some diagnostics are run. A failed temperature
sensor could affect the OBD diagnostics. If a problem occurs in the transmission temperature sensor circuit, trans-
mission temperature will be based on a calculated value.

1.

CHECK TO SEE IF DTC IS CURRENT

With the scan tool, view DTCs.

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

Yes

>> Go To 2

No

>> Go To 8

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AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS

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P0713-TRANSMISSION TEMPERATURE SENSOR HIGH (CONTINUED)

2.

PCM AND WIRING

Turn the ignition off to the lock position.

Remove the Starter Relay.

CAUTION: Removal of the Starter Relay is to prevent a Transmission NO RESPONSE condition and to dis-
able the starter.
Install the Transmission Simulator, Miller tool #8333 and the Electronic Transmission Adapter kit 8333-1A.

NOTE: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.

With the Transmission Simulator, turn the Input/Output switch to OFF.

With the scan tool, monitor the TRANS TEMP VOLTS while turning the Thermistor Voltage switch to all three posi-
tions on the Transmission Simulator.

Compare the scan tool readings with the numbers listed on the Transmission Simulator.

Do the readings on the Transmission Simulator match the scan tool readings ± 0.2 volts?

Yes

>> Go To 3

No

>> Go To 4

3.

TRANSMISSION TEMPERATURE SENSOR

If there are no possible causes remaining, view repair.

Repair

Replace Transmission Solenoid/TRS Assembly per the Service Information.

Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1.

4.

(T54) TRANSMISSION TEMPERATURE SENSOR SIGNAL
CIRCUIT OPEN

Turn the ignition off to the lock position.

Disconnect the PCM C4 harness connector.

Disconnect the TRS harness connector

NOTE: Check connectors - Clean/repair as necessary.

CAUTION: Do not probe the PCM harness connectors. Probing
the PCM harness connectors will damage the PCM terminals
resulting in poor terminal to pin connection. Install Miller Tool
#8815 to perform diagnosis.
Measure the resistance of the Transmission Temperature Sensor Sig-
nal circuit from the appropriate terminal of special tool #8815 to the
TRS harness connector.

Is the resistance above 5.0 ohms?

Yes

>> Repair the Transmission Temperature Sensor Signal circuit

for an open.

Perform 42RLE TRANSMISSION VERIFICATION TEST -
VER 1.

No

>> Go To 5

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AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS

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P0713-TRANSMISSION TEMPERATURE SENSOR HIGH (CONTINUED)

5.

(K900) SENSOR GROUND CIRCUIT OPEN

Disconnect the PCM C2 harness connector

NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance of the (K900) Sensor Ground circuit from the
appropriate terminal of special tool #8815 to the TRS harness connec-
tor.

Is the resistance above 5.0 ohms?

Yes

>> Repair the (K900) Sensor Ground circuit for an open.

Perform 42RLE TRANSMISSION VERIFICATION TEST -
VER 1.

No

>> Go To 6

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AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS

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P0713-TRANSMISSION TEMPERATURE SENSOR HIGH (CONTINUED)

6.

(T54) TRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE

Remove the Transmission Control Relay.

NOTE: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the (A104) Fused B+ circuit and the
(T16) Transmission Control Relay Output circuit in the Transmission
Control Relay connector.

Ignition on, engine not running.

Measure the voltage of the (T54) Transmission Temperature Sensor
Signal circuit in the appropriate terminal of special tool #8815.

Is the voltage above 0.5 volts?

Yes

>> Repair the (T54) Transmission Temperature Sensor Signal

circuit for a short to voltage.

Perform 42RLE TRANSMISSION VERIFICATION TEST -
VER 1.

No

>> Go To 7

7.

POWERTRAIN CONTROL MODULE

Using the schematics as a guide, inspect the wiring and connectors. Repair as necessary. Pay particular attention
to all power and ground circuits.

If there are no possible causes remaining, view repair.

Repair

Replace the Powertrain Control Module per the Service Information. With the scan tool perform QUICK
LEARN.

Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1.

8.

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.

With the scan tool, check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set.

Were there any problems found?

Yes

>> Repair as necessary.

Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1.

No

>> Test Complete.

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