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Contents Wiring diagrams Section: Automatic Trans All sections

Automatic Transmission (Diagnostics), 2.5L: Diagnosis Saab 9-2X I

Automatic Trans 24 illustrations ~3059 words

CHECK PRE-INSPECTION

Ask the customer when and how trouble occurred using interview checklist.

Before performing the diagnosis, inspect following items which might influence the AT problems.

  1. General inspection
  2. Oil leak
  3. Stall speed test
  4. Line pressure test
  5. Transfer clutch pressure test
  6. Time lag test
  7. Road test
  8. Inhibitor switch

Is the item that might influence AT problem normal?

YES. Go to CHECK AT OIL TEMP WARNING LIGHT .

NO

Repair or replace each item.

CHECK INDICATION OF DTC

Calling up the DTC.

Note. If the communication function of Vehicle Diagnostic Interface cannot be executed normally, check the communication circuit.

Is the DTC displayed?

YES. Go to PERFORM THE DIAGNOSIS .

Note. Record all DTC.

NO. Go to PERFORM THE GENERAL DIAGNOSTICS .

PERFORM THE GENERAL DIAGNOSTICS

Inspect using " DIAGNOSTIC PROCEDURE WITHOUT DTC ".

Inspect using " SYMPTOM RELATED DIAGNOSTIC ".

Perform the clear memory mode.

Perform the inspection mode.

Calling up the DTC.

Is the DTC displayed?

YES. Go to PERFORM THE DIAGNOSIS .

NO

Complete the diagnosis.

PERFORM THE DIAGNOSIS

Inspect using DIAGNOSTICS CHART WITH DTC.

" DIAGNOSTIC PROCEDURE WITH DTC ".

Note. For DTC table, refer to " LIST OF DIAGNOSTIC TROUBLE CODE (DTC) ".

Repair the trouble cause.

Perform the clear memory mode.

Perform the inspection mode.

Calling up the DTC.

Is the DTC displayed?

YES

Inspect using " DIAGNOSTIC PROCEDURE WITH DTC ".

NO

Complete the diagnosis.

READ DIAGNOSTIC TROUBLE CODE

Prepare the Vehicle Diagnostic Interface kit.

Connect the diagnosis cable to Vehicle Diagnostic Interface.

Connect the Vehicle Diagnostic Interface to data link connector.

Data link connector located in the lower portion of instrument panel (on driver's side).

Scheme 561

Scheme 561: READ DIAGNOSTIC TROUBLE CODE
Scheme 561: READ DIAGNOSTIC TROUBLE CODE

Connect the diagnosis cable to data link connector.

Note. Do not connect scan tools except for Vehicle Diagnostic Interface.

Turn the ignition switch to ON (engine OFF), and start the Vehicle Diagnostic Interface.

On the << Main Menu >> display screen, select the {Each System Check}.

On the << System Selection Menu >> display screen, select the {Transmission Control System}.

Select the {OK} after the information of transmission type is displayed.

On the << Transmission Diagnosis >> display screen, select the {Diagnostic Code(s) Display}.

Note. For detailed operation procedure, refer to the VEHICLE DIAGNOSTIC INTERFACE OPERATION MANUAL. For details concerning the DTC, refer to the DTC LIST .

WITH Vehicle Diagnostic Interface

Refer to VEHICLE DIAGNOSTIC INTERFACE for information about how to clear DTC.

INSPECTION

DIAGNOSIS

The AT OIL TEMP warning light circuit is open or shorted.

TROUBLE SYMPTOM

  1. When the ignition switch is turned to ON (engine OFF), AT OIL TEMP warning light does not illuminate normally.

WIRING DIAGRAM

Scheme 562

Scheme 562
Scheme 562

CHECK VEHICLE DIAGNOSTIC INTERFACE POWER SUPPLY CIRCUIT

Measure the voltage between data link connector and chassis ground.

Connector & terminal

(B40) No. 1 (+) - Chassis ground (- )

Is the voltage more than 10 V?

YES. Go to CHECK VEHICLE DIAGNOSTIC INTERFACE GROUND CIRCUIT .

NO

Repair the harness and connector between battery and data link connector, and poor contact in coupling connector.

CHECK VEHICLE DIAGNOSTIC INTERFACE GROUND CIRCUIT

Measure the resistance of harness between data link connector and chassis ground.

Connector & terminal

(B40) No. 12 - Chassis ground

(B40) No. 13 - Chassis ground

Is the resistance less than 1 O?

YES. Go to CHECK COMMUNICATION OF VEHICLE DIAGNOSTIC INTERFACE .

NO

Repair the open circuit in harness between data link connector and ground terminal, and poor contact in coupling connector.

CHECK COMMUNICATION OF VEHICLE DIAGNOSTIC INTERFACE

Turn the ignition switch to ON.

Using the Vehicle Diagnostic Interface, check whether communication to transmission systems can be executed normally.

Are the name of system displayed on Vehicle Diagnostic Interface?

YES. Go to CHECK HARNESS/CONNECTOR BETWEEN TCM AND DATA LINK CONNECTOR .

NO. Go to CHECK COMMUNICATION OF VEHICLE DIAGNOSTIC INTERFACE .

Turn the ignition switch to OFF.

Disconnect the TCM connector.

Check whether communication to engine systems can be executed normally.

Are the name of system displayed on Vehicle Diagnostic Interface?

YES. Go to CHECK HARNESS CONNECTOR BETWEEN EACH CONTROL MODULE AND DATA LINK CONNECTOR .

NO. Go to CHECK COMMUNICATION OF VEHICLE DIAGNOSTIC INTERFACE .

Turn the ignition switch to OFF.

Connect the TCM connector.

Disconnect the ECM connector.

Check whether communication to transmission systems can be executed normally.

Are the name of system displayed on Vehicle Diagnostic Interface?

YES

Inspect the ECM.

NO. Go to CHECK HARNESS CONNECTOR BETWEEN EACH CONTROL MODULE AND DATA LINK CONNECTOR .

INSPECTION OF TRANSMISSION HARNESS CONNECTOR

Is the transmission harness connector inserted into bulkhead harness connector?

YES. Go to CHECK POOR CONTACT IN CONNECTORS .

NO

Connect the bulkhead harness connector to transmission harness connector.

FAULT DIAGNOSIS, FAULT CODES

DTCItemDiagnosis content
P0705Transmission Range Sensor Circuit (PRNDL Input)Inhibitor switch malfunction, open or short circuit
P0712Transmission Fluid Temperature Sensor Circuit Low InputATF temperature sensor malfunction, open input signal circuit
P0713Transmission Fluid Temperature Sensor Circuit High InputATF temperature sensor malfunction, open input signal circuit
P0715Input/Turbine Speed Sensor CircuitTorque converter turbine speed sensor malfunction, open or short input signal circuit
P0719Torque Converter/Brake Switch "B" Circuit LowBrake switch malfunction, open input signal circuit
P0720AT Vehicle Speed Sensor CircuitFront vehicle speed sensor malfunction, open or short input signal circuit
P0724Torque Converter/Brake Switch "B" Circuit HighBrake switch malfunction, short input signal circuit
P0725Engine Speed Input CircuitOpen or short engine speed output signal circuit
P0731Gear 1 Incorrect RatioVehicle speed sensor, torque converter turbine speed sensor, or control valve malfunction
P0732Gear 2 Incorrect RatioVehicle speed sensor, torque converter turbine speed sensor, or control valve malfunction
P0733Gear 3 Incorrect RatioVehicle speed sensor, torque converter turbine speed sensor, or control valve malfunction
P0734Gear 4 Incorrect RatioVehicle speed sensor, torque converter turbine speed sensor, or control valve malfunction
P0736Reverse Incorrect RatioVehicle speed sensor, torque converter turbine speed sensor, or control valve malfunction
P0741Torque Converter Clutch Circuit Performance or Stuck OffLock up clutch malfunction or locking of valve
P0743Torque Converter Clutch Circuit ElectricalLock up solenoid malfunction, open or short output signal circuit
P0748Pressure Control Solenoid "A" ElectricalLine pressure linear solenoid malfunction, open or short output signal circuit
P0753Shift Solenoid "A" ElectricalLow clutch duty solenoid malfunction, open or short output signal circuit
P0758Shift Solenoid "B" Electrical2-4 brake duty solenoid malfunction, open or short output signal circuit
P0763Shift Solenoid "C" ElectricalHigh clutch duty solenoid malfunction, open or short output signal circuit
P0768Shift Solenoid "D" ElectricalLow & reverse duty solenoid malfunction, open or short output signal circuit
P0801Reverse Inhibitor Control CircuitShift lock solenoid malfunction, open or short output signal circuit
P1706AT Vehicle Speed Sensor Circuit Malfunction (rear wheel)Rear vehicle speed sensor malfunction, open or short input signal circuit
P1707AT AWD Solenoid Valve Circuit MalfunctionTransfer duty solenoid malfunction, open or short output signal circuit
P1708Throttle Position Sensor Circuit LowInput Throttle position sensor malfunction, open input signal circuit
P1709Throttle Position Sensor Circuit High InputThrottle position sensor malfunction, open input signal circuit
P1714Throttle Position Sensor Power Supply CircuitThrottle position sensor malfunction, open or short input signal circuit
P1718CAN Communication CircuitOpen or short AT communication signal circuit

DTC LIST

DIAGNOSIS

  1. There is malfunction in inhibitor switch.
  2. The input signal circuit of inhibitor switch is open or shorted.

TROUBLE SYMPTOM

  1. Shift characteristics are erroneous.
  2. Engine brake is not effected when select lever is in "3" range.
  3. Engine brake is not effected when select lever is in "2" range.
  4. Engine brake is not effected when select lever is in "1" range.

Scheme 563

Scheme 563: WIRING DIAGRAM
Scheme 563: WIRING DIAGRAM

The input signal circuit of TCM to ATF temperature sensor is open or shorted.

Excessive shift shock.

Scheme 564

Scheme 564: WIRING DIAGRAM
Scheme 564: WIRING DIAGRAM

CHECK INPUT SIGNAL FOR TCM USING VEHICLE DIAGNOSTIC INTERFACE

Connect the connector to transmission.

Turn the ignition switch to ON (engine OFF).

Does the ATF temperature gradually decrease?

YES

Even if the POWER indicator blinks, the circuit has returned to a normal condition at this time. Temporary poor contact of the connector or harness may be the cause. Repair the harness or contact in ATF temperature sensor and transmission connector.

NO. Go to CHECK POOR CONTACT .

The input signal circuit of TCM to ATF temperature sensor is open or shorted.

Excessive shift shock.

Scheme 565

Scheme 565: WIRING DIAGRAM
Scheme 565: WIRING DIAGRAM

The input signal circuit of TCM is open or shorted.

Excessive shift shock.

Scheme 566

Scheme 566: WIRING DIAGRAM
Scheme 566: WIRING DIAGRAM

Connect the connectors to TCM and transmission.

Connect the Vehicle Diagnostic Interface to data link connector.

Turn the ignition switch to ON and turn Vehicle Diagnostic Interface switch to ON.

Start the engine.

Move the select lever to "P" or "N" range.

Read the data of turbine speed using Vehicle Diagnostic Interface.

  1. Compare the tachometer reading with Vehicle Diagnostic Interface indications.

Is the revolution value same as the tachometer reading shown on the combination meter?

YES

Even if the POWER indicator 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.

NO. Go to CHECK POOR CONTACT .

Brake switch malfunction or input signal open circuit.

Gear is not shifted down when climbing hill.

Scheme 567

Scheme 567: WIRING DIAGRAM
Scheme 567: WIRING DIAGRAM

INSPECT POOR CONTACT

Is there poor contact in the brake switch input signal circuit?

YES

Repair poor contact.

NO

Replace the TCM.

  1. The vehicle speed signal is abnormal.
  2. The circuit in combination meter is faulty.
  3. The harness connector between TCM and vehicle speed sensor is in short or open.
  1. Erroneous idling.
  2. Engine stalls.
  3. Poor driving performance.

Scheme 568

Scheme 568: WIRING DIAGRAM
Scheme 568: WIRING DIAGRAM

Connect all connectors.

Connect the Vehicle Diagnostic Interface to data link connector.

Lift-up the vehicle and place rigid racks.

Note. Raise all wheels off floor.

Turn the ignition switch to ON and turn Vehicle Diagnostic Interface switch to ON.

Start the engine.

Read the data of vehicle speed using Vehicle Diagnostic Interface.

  1. Compare the speedometer reading with Vehicle Diagnostic Interface indications.
  2. Vehicle speed is indicated in "km/h" or "MPH".

Slowly increase the vehicle speed to 60 km/h or 37 MPH.

Note. The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system.

Does the speedometer indication increase as Vehicle Diagnostic Interface front speed sensor data increases?

YES

Even if the POWER indicator blinks, the circuit has returned to a normal condition at this time. A temporary poor connector or harness may be the cause. Repair the harness or connector in front vehicle speed sensor circuit.

NO. Go to CHECK POOR CONTACT. .

Brake switch malfunction or open brake switch input signal circuit.

Gear is not shifted down when climbing hill.

Scheme 569

Scheme 569: WIRING DIAGRAM
Scheme 569: WIRING DIAGRAM

Is there poor contact in the brake switch input signal circuit?

YES

Repair poor contact.

NO

Replace the TCM.

The engine speed input signal circuit is open or shorted.

  1. No lock-up (after engine warm-up).
  2. The AT OIL TEMP warning light remains on when vehicle speed is "0".

Scheme 570

Scheme 570: WIRING DIAGRAM
Scheme 570: WIRING DIAGRAM

Connect the connectors to TCM and ECM.

Connect the Vehicle Diagnostic Interface to data link connector.

Start the engine and turn Vehicle Diagnostic Interface switch to ON.

Idle the engine.

Read the data of engine speed using Vehicle Diagnostic Interface.

  1. Display shows the engine speed signal value sent from ECM.

Is the revolution value same as tachometer reading shown on combination meter?

YES

Even if the POWER indicator 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 ECM.

NO. Go to CHECK POOR CONTACT .

CONFIRM DTC P0725

Replace the ECM with a new one.

Does the DTC appear again, after memory has been cleared?

YES

Replace the TCM.

NO

Replace the ECM.

Vehicle speed sensor malfunction and torque converter turbine speed sensor malfunction, etc. or control valve malfunction.

  1. Shift point is too high or too low.
  2. Excessive shift shock.
  3. Tight cornering condition is occurred.
  4. Gear is not shifted to reverse.
  5. Gear position is held by fail safe function.
  1. Lock up clutch malfunction
  2. Locking of valve

Lock up is not operated.

The output signal circuit of lock-up duty solenoid is open or shorted.

No "lock-up" (after engine warm-up).

Scheme 571

Scheme 571: WIRING DIAGRAM
Scheme 571: WIRING DIAGRAM

CHECK DTC

Do multiple DTCs appear in the on-board diagnostics test mode?

YES

Go to another DTC.

NO. Go to CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION .

The output signal circuit of line pressure linear solenoid is open or shorted.

Excessive shift shock.

Scheme 572

Scheme 572: WIRING DIAGRAM
Scheme 572: WIRING DIAGRAM

The output signal circuit of low clutch duty solenoid is open or shorted.

Excessive shift shock.

Scheme 573

Scheme 573: WIRING DIAGRAM
Scheme 573: WIRING DIAGRAM

CHECK OUTPUT SIGNAL FROM TCM USING VEHICLE DIAGNOSTIC INTERFACE

Connect the connectors to TCM and transmission.

Connect the Vehicle Diagnostic Interface to data link connector.

Start the engine and turn Vehicle Diagnostic Interface switch to ON.

Warm-up the transmission until ATF temperature is above 80°C (176°F).

Note. If ambient temperature is below 0 °C (32°F), drive the vehicle until ATF reaches its operating temperature.

Stop the engine and turn ignition switch to ON (engine OFF).

Shift the select lever to "P" or "N" range, and depress the accelerator pedal.

Read the data of low clutch duty solenoid using Vehicle Diagnostic Interface.

  1. Low clutch duty solenoid is indicated in "%".

Is the value 100%?

YES. Go to CHECK OUTPUT SIGNAL FROM TCM USING VEHICLE DIAGNOSTIC INTERFACE .

NO. Go to CHECK POOR CONTACT .

Turn the ignition switch to ON (engine OFF).

Move the select lever to "D" range.

Read the data of low clutch duty solenoid.

Is the value 0%?

YES

Even if the POWER indicator 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 transmission.

NO. Go to CHECK POOR CONTACT .

The output signal circuit of 2-4 brake duty solenoid is open or shorted.

Excessive shift shock.

Scheme 574

Scheme 574: WIRING DIAGRAM
Scheme 574: WIRING DIAGRAM

Connect all connectors.

Connect the Vehicle Diagnostic Interface to data link connector.

Start the engine and turn Vehicle Diagnostic Interface switch to ON.

Warm-up the transmission until ATF temperature is above 80°C (176°F).

Note. If ambient temperature is below 0 °C (32°F), drive the vehicle until ATF reaches its operating temperature.

Stop the engine and turn ignition switch to ON (engine OFF).

Move the select lever to "N" range.

Read the data of 2-4 brake duty solenoid using Vehicle Diagnostic Interface.

  1. 2-4 brake duty solenoid is indicated in "%".

Is the value 100%?

YES. Go to CHECK OUTPUT SIGNAL FROM TCM USING VEHICLE DIAGNOSTIC INTERFACE .

NO. Go to CHECK POOR CONTACT .

Move the select lever to "2" range.

Turn the HOLD switch to ON.

Is the value 0%?

YES

Even if the POWER indicator 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.

NO. Go to CHECK POOR CONTACT .

The output signal circuit of high clutch duty solenoid is open or shorted.

Excessive shift shock.

Scheme 575

Scheme 575: WIRING DIAGRAM
Scheme 575: WIRING DIAGRAM

Connect the connectors to TCM and transmission.

Lift-up the vehicle and place rigid racks.

Note. Raise all wheels off ground.

Connect the Vehicle Diagnostic Interface to data link connector.

Start the engine and turn Vehicle Diagnostic Interface switch to ON.

Start the engine and warm-up the transmission until ATF temperature is above 80°C (176°F).

Note. If ambient temperature is below 0 °C (32°F), drive the vehicle until ATF reaches its operating temperature.

Read the data of high clutch duty solenoid using Vehicle Diagnostic Interface.

  1. High clutch duty solenoid is indicated in "%".

Move the select lever to "D" range and slowly increase vehicle speed and measure at 3rd or 4th gear.

Note. The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system.

Is the value 0%?

YES. Go to CHECK OUTPUT SIGNAL FROM TCM USING VEHICLE DIAGNOSTIC INTERFACE .

NO. Go to CHECK POOR CONTACT .

Return the engine to idling speed and move select lever to "N" range.

Note. The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system.

Is the value 100%?

YES

Even if the POWER indicator 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.

NO. Go to CHECK POOR CONTACT .

The output signal circuit of low & reverse duty solenoid is open or shorted.

Gear is not changed.

Scheme 576

Scheme 576: WIRING DIAGRAM
Scheme 576: WIRING DIAGRAM

Connect all connectors.

Connect the Vehicle Diagnostic Interface to data link connector.

Start the engine and turn Vehicle Diagnostic Interface switch to ON.

Warm-up the transmission until ATF temperature is above 80°C (176°F).

Note. If ambient temperature is below 0 °C (32°F), drive the vehicle until ATF reaches its operating temperature.

Stop the engine and turn ignition switch to ON (engine OFF).

Shift the select lever to "P" or "N" range, and depress the accelerator pedal.

Read the data of low & reverse duty solenoid using Vehicle Diagnostic Interface.

  1. Low & reverse duty solenoid is indicated in "%".

Is the value 100%?

YES. Go to CHECK OUTPUT SIGNAL FROM TCM USING VEHICLE DIAGNOSTIC INTERFACE .

NO. Go to CHECK POOR CONTACT .

Move the select lever to "1" range.

Read the data of low & reverse duty solenoid.

Is the value 55%?

YES

Even if the POWER indicator 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.

NO. Go to CHECK POOR CONTACT .

Shift lock solenoid malfunction, open or short reverse inhibitor control circuit.

  1. Gear is shifted from "N" range to "R" range during driving at 20 km/h (12 MPH) or more.
  2. Gear can not be shifted from "N" range to "R" range.

Scheme 577

Scheme 577: WIRING DIAGRAM
Scheme 577: WIRING DIAGRAM

The input signal circuit of TCM is open or shorted.

No lock-up or excessive tight corner "braking".

Scheme 578

Scheme 578: WIRING DIAGRAM
Scheme 578: WIRING DIAGRAM

The output signal circuit of transfer duty solenoid is open or shorted.

  1. Excessive tight corner "braking".
  2. Front wheel slips on the slippery road.

Scheme 579

Scheme 579: WIRING DIAGRAM
Scheme 579: WIRING DIAGRAM

The input signal circuit of accelerator pedal position sensor is open or shorted.

  1. Shift point too high or too low.
  2. Excessive shift shock.
  3. Excessive tight corner "braking".

Scheme 580

Scheme 580: WIRING DIAGRAM
Scheme 580: WIRING DIAGRAM

Connect the connectors to TCM, accelerator pedal position sensor and ECM.

Connect the Vehicle Diagnostic Interface to data link connector.

Turn the ignition switch to ON (engine OFF).

Turn the Vehicle Diagnostic Interface switch to ON.

Throttle fully closed.

Read the data of accelerator pedal position sensor using Vehicle Diagnostic Interface.

  1. Accelerator pedal position SENSOR input signal is indicated.

Is the voltage more than 0.2 V?

YES

Even if the POWER indicator 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 accelerator pedal position sensor circuit.

NO. Go to CHECK POOR CONTACT .

The input signal circuit of accelerator pedal position sensor is shorted.

  1. Shift point too high or too low.
  2. Excessive shift shock.
  3. Excessive tight corner "braking".

Scheme 581

Scheme 581: WIRING DIAGRAM
Scheme 581: WIRING DIAGRAM

Connect the connectors to TCM, accelerator pedal position sensor and ECM.

Connect the Vehicle Diagnostic Interface to data link connector.

Turn the ignition switch to ON (engine OFF).

Turn the Vehicle Diagnostic Interface switch to ON.

Throttle fully opened.

Read the data of accelerator pedal position sensor using Vehicle Diagnostic Interface.

  1. Accelerator pedal position sensor input signal is indicated.

Is the voltage less than 4.6 V?

YES. Go to CHECK POOR CONTACT .

NO

Even if the POWER indicator 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 accelerator pedal position sensor circuit.

The power supply circuit of throttle position sensor is open or shorted.

  1. Shift point too high or too low.
  2. Excessive shift shock.
  3. Excessive tight corner "braking".

Scheme 582

Scheme 582: WIRING DIAGRAM
Scheme 582: WIRING DIAGRAM

Input signal circuit of TCM is open or shorted.

Scheme 583

Scheme 583: WIRING DIAGRAM
Scheme 583: WIRING DIAGRAM

Check if multiple trouble codes appear in the on-board diagnostics test mode.

Are multiple DTCs displayed?

YES

Go to other DTC.

NO. Go to CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM .

  1. The LED does not come on even if FWD switch is ON.
  2. The FWD switch circuit is open or short.

Scheme 584

Scheme 584: WIRING DIAGRAM
Scheme 584: WIRING DIAGRAM
SymptomProblem parts
Starter does not rotate when select lever is in "P" or "N" range, starter rotates when select lever is in "R", "D", "3" or "2" range.Inhibitor switch Select cable Select lever Starter motor and harness
Abnormal noise when select lever is in "P" or "N" range.Strainer Transfer duty solenoid Oil pump Drive plate ATF level too high or too low
Hissing noise occurs during standing start.Strainer ATF level too high or too low
Noise occurs while driving in "D1".Final gear Planetary gear Reduction gear Differential gear oil level too high or too low
Noise occurs while driving in "D2".
Noise occurs while driving in "D3".Final gear Low & reverse brake Reduction gear Differential gear oil level too high or too low
Noise occurs while driving in "D4".Final gear Low & reverse brake Planetary gear Reduction gear Differential gear oil level too high or too low
Engine stalls while shifting from "1" range to another.Control valve Lock-up damper Engine performance Input shaft
Vehicle moves when select lever is in "N" range.Select cable Inhibitor switch TCM Low clutch
Shock occurs when select lever is moved from "N" to "D" range.Accelerator pedal position sensor ATF temperature sensor Line pressure linear solenoid Low clutch duty solenoid Low clutch TCM Harness Control valve ATF deterioration
Excessive time lag occurs when select lever is moved from "N" to "D" range.Control valve Low clutch Line pressure linear solenoid Seal ring Front gasket of transmission case
Shock occurs when select lever is moved from "N" to "R" range.Accelerator pedal position sensor ATF temperature sensor Line pressure linear solenoid TCM Harness Control valve ATF deterioration
Excessive time lag occurs when select lever is moved from "N" to "R" range.Control valve Low & reverse clutch Reverse clutch Line pressure linear solenoid Seal ring Front gasket of transmission case
Vehicle does not start in any shift range (engine stalls).Parking brake mechanism Planetary gear
Vehicle does not start in any shift range (engine revving up).Strainer Line pressure linear solenoid Control valve Drive pinion Hypoid gear Axle shaft Differential gear Oil pump Input shaft Output shaft Planetary gear Drive plate ATF level too low Front gasket of transmission case
Vehicle does not start in "R" range only (engine revving up).Select cable Select lever Line pressure linear solenoid Control valve Low & reverse clutch Reverse clutch
Vehicle does not start in "R" range only (engine stalls).Low clutch 2-4 brake Planetary gear Parking brake mechanism
Vehicle does not start in "D", "3" range only (engine revving up).Low clutch One-way clutch
Vehicle does not start in "D", "3" or "2" range only (engine revving up).Low clutch
Vehicle does not start in "D", "3" or "2" range only (engine stalls).Reverse clutch
Vehicle starts in "R" range only (engine revving up).Control valve
Acceleration during standing starts is poor (high stall RPM).Control valve Low clutch Reverse clutch ATF level too low ATF deterioration Front gasket of transmission case Differential gear oil level too high or too low
Acceleration during standing starts is poor (low stall RPM).Oil pump Torque converter one-way clutch Engine performance
Acceleration is poor when select lever is in "D", "3" or "2" range (normal stall RPM).TCM Control valve High clutch 2-4 brake Planetary gear
Acceleration is poor when select lever is in "R" (normal stall RPM).Control valve High clutch 2-4 brake Planetary gear
No shift occurs from 1st to 2nd gear.TCM Rear vehicle speed sensor Front vehicle speed sensor Accelerator pedal position sensor Control valve 2-4 brake
No shift occurs from 2nd to 3rd gear.TCM Control valve High clutch
No shift occurs from 3rd to 4th gear.TCM ATF temperature sensor Control valve 2-4 brake
Engine brake is not effected when select lever is in "3" range.Inhibitor switch TCM Accelerator pedal position sensor Control valve
Engine brake is not effected when select lever is in "3" or "2" range.Control valve
Engine brake is not effected when select lever is in "1" range.Control valve Low & reverse brake
Shift characteristics are erroneous.Inhibitor switch TCM Front vehicle speed sensor Rear vehicle speed sensor Accelerator pedal position sensor Control valve Ground earth
No lock-up occurs.TCM Accelerator pedal position sensor ATF temperature sensor Control valve Lock-up facing Engine speed signal
Parking brake is not effected.Select cable Select lever Parking mechanism
Shift lever cannot be moved or is hard to move from "P" range.
ATF spurts out.ATF level too high
Differential oil spurts out.Differential gear oil too high
Differential oil level changes excessively.Seal pipe Double oil seal
Odor is produced from ATF supply pipe.High clutch 2-4 brake Low & reverse clutch Reverse clutch Lock-up facing ATF deterioration
Shock occurs from 1st to 2nd gear.TCM Torque converter turbine speed sensor Accelerator pedal position sensor 2-4 brake duty solenoid ATF temperature sensor Line pressure linear solenoid Control valve 2-4 brake ATF deterioration Engine performance Low & reverse duty solenoid
Slippage occurs from 1st to 2nd gear.TCM Accelerator pedal position sensor 2-4 brake duty solenoid ATF temperature sensor Line pressure linear solenoid Control valve 2-4 brake
Shock occurs from 2nd to 3rd gear.TCM Torque converter turbine speed sensor Accelerator pedal position sensor 2-4 brake duty solenoid ATF temperature sensor Line pressure linear solenoid Low & reverse duty solenoid Control valve High clutch 2-4 brake ATF deterioration Engine performance High clutch duty solenoid
Slippage occurs from 2nd to 3rd gear.TCM Accelerator pedal position sensor 2-4 brake duty solenoid ATF temperature sensor Line pressure linear solenoid Control valve High clutch 2-4 brake Low & reverse duty solenoid
Shock occurs from 3rd to 4th gear.TCM Torque converter turbine speed sensor Accelerator pedal position sensor 2-4 brake duty solenoid ATF temperature sensor Line pressure linear solenoid Control valve Low clutch duty solenoid 2-4 brake ATF deterioration Engine performance
Slippage occurs from 3rd to 4th gear.TCM Accelerator pedal position sensor 2-4 brake duty solenoid ATF temperature sensor Line pressure linear solenoid Control valve 2-4 brake
Shock occurs when select lever is moved from "3" to "2" range.TCM Torque converter turbine speed sensor Accelerator pedal position sensor ATF temperature sensor Line pressure linear solenoid Control valve 2-4 brake duty solenoid 2-4 brake ATF deterioration High clutch duty solenoid
Shock occurs when select lever is moved from "D" to "1" range.TCM Torque converter turbine speed sensor Accelerator pedal position sensor ATF temperature sensor Line pressure linear solenoid Control valve ATF deterioration Low & reverse brake duty solenoid Low & reverse clutch solenoid
Shock occurs when select lever is moved from "2" to "1" range.TCM Torque converter turbine speed sensor Accelerator pedal position sensor ATF temperature sensor Line pressure linear solenoid Control valve Low & reverse clutch ATF deterioration 2-4 brake duty solenoid Low & reverse brake duty solenoid
Shock occurs when accelerator pedal is released at medium speeds.TCM Accelerator pedal position sensor ATF temperature sensor Line pressure linear solenoid Control valve Lock-up damper Engine performance
Vibration occurs during straight -forward operation.TCM Lock-up duty solenoid Lock-up facing Lock-up damper
Vibration occurs during turns (tight corner "braking" phenomenon).TCM Front vehicle speed sensor Rear vehicle speed sensor Accelerator pedal position sensor ATF temperature sensor Transfer clutch Transfer valve Transfer duty solenoid ATF deterioration Harness
Front wheel slippage occurs during standing starts.TCM Front vehicle speed sensor Accelerator pedal position sensor ATF temperature sensor Transfer clutch Control valve Transfer pipe Transfer duty solenoid
Vehicle is not set in FWD mode.TCM Transfer clutch Control valve Transfer duty solenoid FWD fuse
Select lever is hard to move.Select cable Select lever Detente spring Manual plate
Select lever is too high to move (unreasonable resistance).Detente spring Manual plate
Select lever slips out of operation during acceleration or while driving on rough terrain.Select cable Select lever Detente spring Manual plate

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