A/T - 4T65-E DTC P0713 Manual Update
File In Section: 07 - Transmission/TransaxleBulletin No.: 02-07-30-015
Date: April, 2002
SERVICE MANUAL UPDATE
Subject:
Revised DTC P0713
Models:
2002 Buick Century, LeSabre, Regal
2002 Chevrolet Impala, Monte Carlo, Venture
2002 Oldsmobile Aurora, Intrigue, Silhouette
2002 Pontiac Bonneville, Grand Prix, Montana
with 4T65-E Automatic Transaxle
This bulletin is being issued to revise DTC P0713 in the Automatic Transaxle - 4T65-E sub-section of the Service Manual. Please replace the current information in the Service Manual with the following information.
The following information has been updated within SI2000. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.
Circuit Description
The automatic transmission fluid temperature (TFT) sensor is a negative coefficient thermistor whose resistance value changes based on temperature. The PCM provides a 5 volt reference to the sensor. A low fluid temperature, an open TFT sensor or sensor circuit results in high signal voltage. The TFT operating range is -40°C to +151°C (-40°F to +304°F).
If the PCM detects a continuous open or a short to power on the TFT sensor circuit, then DTC P0713 sets. DTC P0713 is a type C DTC.
Conditions for Running the DTC
The system voltage is 9-18 volts.
Conditions for Setting the DTC
The PCM detects a TFT sensor voltage greater than 4.9 volts for 6 minutes and 40 seconds continuous.
Action Taken When the DTC Sets
^ The PCM does not turn on the malfunction indicator lamp (MIL).
^ The PCM freezes shift adapts.
^ The PCM calculates a default TFT from the ECT sensor and the IAT sensor.
^ The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM stores this information as Failure Records. The PCM stores DTC P0713 in PCM history.
Test Description
The numbers refer to the step numbers on the diagnostic table as shown.
2. A value above 4.9 volts indicates the fault is present. A value below 4.9 volts indicates the fault is intermittent.
3. A value of 4.9-5.0 volts indicates the PCM and engine side of the wiring are good.
6. A short to voltage greater than 5 volts would cause the TFT sensor to open.
9. A short to the TFT sensor signal circuit and any other circuit in the transmission harness could cause the TFT sensor to open.
DISCLAIMER