LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2006 >> Baja Turbo, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Automatic Transmission Diagnostics (4AT) (H4SO)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC 36 Torque Converter Turbine Speed Sensor

DTC 36 Torque Converter Turbine Speed Sensor

WARNING: This page is about a different variant/trim than selected.

DIAGNOSIS: 

The input signal circuit of TCM is open or shorted.

TROUBLE SYMPTOM: 

Excessive shift shock.

WIRING DIAGRAM: 

Fig 1: Torque Converter Turbine Speed Sensor - Wiring Diagram
G04990732Courtesy of SUBARU OF AMERICA, INC.
DIAGNOSTIC PROCEDURE CHART

Step Check Yes No
1 CHECK TORQUE CONVERTER TURBINE SPEED SENSOR. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the connector from transmission.
  3. Measure the resistance between transmission connector receptacle's terminals.

    Connector & terminal 

    (T4) No. 14 - No. 15: 

 Is the resistance 450 - 650 Ω? Go to step 2.  Replace the turbine speed sensor. < Ref. to TORQUE CONVERTER TURBINE SPEED SENSOR . >
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. 
  1. Disconnect the connector from TCM.
  2. Measure the resistance of harness between TCM and transmission connector.

    Connector & terminal 

    (B55) No. 12 - (B11) No. 14: 

 Is the resistance less than 1 Ω? Go to step 3.  Repair the open circuit in harness between TCM and transmission connector.
3 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. 
Measure the resistance of harness between TCM and transmission connector.
Connector & terminal 
(B55) No. 21 - (B11) No. 15: 		 Is the resistance less than 1 Ω? Go to step 4.  Repair the open circuit in harness between TCM and transmission connector, and poor contact in coupling connector.
4 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. 
Measure the resistance of harness between TCM and chassis ground.
Connector & terminal 
(B55) No. 21 - Chassis ground: 		 Is the resistance more than 1 MΩ? Go to step 5.  Repair the short circuit in harness between TCM and transmission connector.
5 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. 
Measure the resistance of harness between TCM and chassis ground.
Connector & terminal 
(B55) No. 12 - Chassis ground: 		 Is the resistance more than 1 MΩ? Go to step 6.  Repair the short circuit in harness between TCM and transmission connector, and poor contact in coupling connector.
6 PREPARE OSCILLOSCOPE.  Do you have an oscilloscope? Go to step 10.  Go to step 7. 
7 PREPARE SUBARU SELECT MONITOR.  Do you have a Subaru Select Monitor? Go to step 9.  Go to step 8. 
8 CHECK INPUT SIGNAL FOR TCM. 
  1. Connect the connectors to TCM and transmission.
  2. Start the engine and move select lever to "P" or "N" range.
  3. Measure the voltage between TCM connector terminals.

    Connector & terminal 

    (B55) No. 12 (+) - No. 21 (-): 

 Is the voltage more than AC 1 V? Even if the AT OIL TEMP warning light blinks, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair the harness or connector in TCM and transmission. Go to step 11. 
9 CHECK INPUT SIGNAL FOR TCM USING SUBARU SELECT MONITOR. 
  1. Connect the connectors to TCM and transmission.
  2. Connect the Subaru Select Monitor to data link connector.
  3. Turn the ignition switch to ON and turn Subaru Select Monitor switch to ON.
  4. Start the engine.
  5. Move the select lever to "P" or "N" range.
  6. Read the data of turbine speed using Subaru Select Monitor.

  • Compare the tachometer with Subaru Select Monitor indications.
 Is the revolution value same as the tachometer reading shown on the combination meter? Even if the AT OIL TEMP warning light blinks, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair the harness or connector in TCM and transmission. Go to step 11. 
10 CHECK INPUT SIGNAL FOR TCM USING OSCILLOSCOPE. 
  1. Connect the connectors to TCM and transmission.
  2. Set the oscilloscope to TCM connector terminals.

    Connector & terminal 

    Positive probe; (B55) No. 12: 

    Ground lead; (B55) No. 21: 

  3. Start the engine and move select lever to "P" or "N" range.
 Is the signal voltage more than AC 1V? Even if the AT OIL TEMP warning light blinks, the circuit has returned to a normal condition at this time. A temporary poor contact of the connector or harness may be the cause. Repair the harness or connector in TCM and transmission. Go to step 11. 
11 CHECK POOR CONTACT.  Is there poor contact in torque converter turbine speed sensor circuit? Repair the poor contact. Replace the TCM. < Ref. to TRANSMISSION CONTROL MODULE (TCM) . >

scientia non olet · About LEMON Manuals