Repair manual
Toyota Supra A70 Repair Manual
Step-by-step repair and maintenance instructions for the Toyota Supra A70 (1986–1993): removal, installation, adjustment, diagnostics and parameter checks with illustrations.
59sections
373articles
ENManual language
- APPLICATION
- DESCRIPTION
- OPERATION
- Throttle Position (TP) Sensor
- Vehicle Speed Sensor (VSS)
- Transfer Shift Position Switch (TSPS)
- Pattern Select Switch (PSS)
- Neutral Start Switch (NSS)
- Brake Light Switch (BLS)
- OD Main Switch (ODMS)
- Water Temperature Sensor (WTS)
- Fluid Temperature Sensor (FTS)
- Cruise Control Sensor (CCS)
- Kickdown Switch (KS)
- Engine Speed Sensor (ESS)
- OD Direct Clutch Speed Sensor (ODDCSS)
- DIAGNOSTIC PROCEDURE
- DIAGNOSTIC CODES
- Reading Diagnostic Codes (W/O Super Monitor Display)
- Reading Diagnostic Codes (Cressida & Supra W/Super Monitor Display)
- DIAGNOSTIC CODES (A-341E MODELS)
- Reading Diagnostic Codes (A-341E)
- CANCELING DIAGNOSTIC CODES (ALL MODELS)
- MANUAL SHIFTING TEST
- Test Procedure
- Throttle Position Sensor
- Brake Signal
- Upshift Position Signals
- ECU PIN VOLTAGES
- "OD OFF" Indicator Light Blinks While Driving
- Shift Points Too High Or Too Low
- No Upshift To Overdrive (After Warm-Up)
- No Lock-Up (After Warm-Up)
- Transfer Case Will Not Shift From "H4" To "L4"
- OD OFF Indicator Light Blinks While Driving (A-341E)
- No Upshift In 3-OD (OD OFF Indicator Light Remains ON)
- No Downshift OD-3
- No Downshift 3-2, 2-1
- No Lock-Up Off
- Upshifts To 2nd Or 3rd While In "L" Range
- Upshifts To OD From 3rd While OD Switch Is OFF
- Upshifts To OD From 3rd While Engine Is Cold
- Harsh Engagement "N" to "D"
- Poor Acceleration
- No Kickdown
- No Pattern Select
- Large Shin Shock Or Engine Stalls When Starting Off Or Stopping
- ELECTRICAL COMPONENTS & CIRCUITS
- Neutral Start Switch
- No. 2 Speed Sensor
- Rear Speed Sensor (Supra Models W/ABS)
- Pattern Select Switch
- Overdrive Switch
- No. 1 Speed Sensor (Analog Type)
- No. 1 Speed Sensor (Digital Type)
- Lock-Up Mechanism
- Transfer Position Switch (Pickup & 4Runner A-340F & A-340 Models)
- Transmission & Transfer Fluid Temperature Sensor (Pickup & 4Runner A-340F & A-340H Models)
- OD Direct Clutch Speed Sensor (A-341E)
- Kickdown Switch (A-341E)
- INTRODUCTION
- INTAKE AIR INDUCTION SYSTEM CHECK - NON-TURBO
- INITIAL CHECKS
- ACTUATOR & WASTEGATE
- IMPELLER WHEEL ROTATION
- TURBINE SHAFT END PLAY & RADIAL PLAY
- AIRFLOW METER & SENSOR TEST
- CAMSHAFT POSITION SENSOR TEST
- COOLANT TEMPERATURE SENSOR TEST
- EGR GAS TEMPERATURE SENSOR TEST
- KNOCK SENSOR TEST
- NEUTRAL/START SWITCH TEST
- OXYGEN SENSOR FEEDBACK VOLTAGE TEST
- SUB-OXYGEN SENSOR TEST - CALIF. NON-TURBO MODELS
- OXYGEN SENSOR HEATER TEST
- THROTTLE POSITION SENSOR (TPS) TEST
- TURBOCHARGER VACUUM SWITCHING VALVE (VSV) TEST
- VEHICLE SPEED SENSOR (ANALOG TYPE) TEST
- CIRCUIT OPENING RELAY TEST
- EFI MAIN RELAY TEST
- FUEL DELIVERY TEST
- FUEL PUMP RELAY & RESISTOR TEST
- FUEL INJECTOR RESISTOR (TURBO MODELS) TEST
- FUEL INJECTORS TEST
- FUEL PRESSURE-UP SYSTEM TEST (TURBO)
- COLD START INJECTOR TEST
- COLD START INJECTOR TIME SWITCH TEST
- IDLE SPEED CONTROL (ISC) SYSTEM TEST
- IGNITION SYSTEM DIAGNOSTIC CODES TESTS (NON-TURBO)
- CODE 12 (NO RPM SIGNAL)
- CODE 13 (NO RPM SIGNAL)
- CODE 14 (IGNITION SIGNAL PROBLEM)
- SPARK TEST (NON-TURBO)
- PRIMARY COIL RESISTANCE (NON-TURBO)
- SECONDARY COIL RESISTANCE (NON-TURBO)
- PICK-UP COIL RESISTANCE TEST (NON-TURBO)
- PICK-UP COIL AIR GAP CHECK (NON-TURBO)
- IGNITION SYSTEM DIAGNOSTIC CODES TESTS (TURBO)
- IGNITION SYSTEM CONNECTION CHECKS (TURBO)
- IGNITION COIL FEED CIRCUIT TEST (TURBO)
- PRIMARY COIL RESISTANCE (TURBO)
- IGNITION COIL GROUND TEST (TURBO)
- FEED TO IGNITOR TEST (TURBO)
- PICK-UP COIL RESISTANCE (TURBO)
- PICK-UP COIL AIR GAP CHECK (TURBO)
- IGNITOR POWER TRANSISTOR CHECK (TURBO)
- DASHPOT CONTROL SYSTEM TEST
- EGR SYSTEM TEST
- VACUUM SWITCHING VALVE (VSV) (TURBO) TEST
- VACUUM SWITCHING VALVE (VSV) (NON-TURBO) TEST
- FUEL ODOR OR GAS LEAKS
- FUEL TANK OR EXPANSION TANK DEFORMED
- ROUGH ENGINE OPERATION
- BI-METALLIC VACUUM SWITCHING VALVE (BVSV) TEST
- CHARCOAL CANISTER CHECK
- MAINTENANCE
- APPLICATION
- IDENTIFICATION
- DESCRIPTION & OPERATION
- LUBRICATION & ADJUSTMENTS
- TROUBLE SHOOTING
- Fluid Discolored Or Smells Burnt
- No Movement In Any Gear
- Selector Lever Position Incorrect
- Harsh Engagement Into Any Drive Range
- Delayed 1-2, 2-3 Or 3-OD Upshifts, Or Downshifts From OD-3 Or 3-2, Then Changes Back To OD Or 3
- Slips On Any Upshift Or Slips Or Shudders On Acceleration
- Drag Or Binding On Upshifts
- No Lock-Up In 2nd, 3rd Or OD
- Harsh Downshift
- No Downshift When Coasting
- Downshifts Too Soon Or Late When Coasting
- No OD-3, 3-2 Or 2-1 Kickdown
- No Engine Braking In "2" Or "L" Range
- Vehicle Does Not Move In "R" Range (A-341E)
- Vehicle Does Not Move In "D", "2" Or "L" Range (A-341E)
- No Upshift 1-2, 2-3, 3-OD (A-341E)
- No Downshift 2-1 (A-341E)
- No Lock-Up Or No Lock-Up Off (A-341E)
- Slip Or Shudder In "D" Range, "R" Range, 1st, 2nd, 3rd Or OD (A-341E)
- No Engine Braking In 1st-3rd, 1st, 2nd (A-341E)
- Poor Acceleration (A-341E)
- Engine Stalls When Starting Off Or Stopping (A-341E)
- Vehicle Does Not Hold In "P" Range
- No Transfer Case Gear Changes On 4WD Models
- ELECTRICAL TESTING
- PRELIMINARY CHECKS
- ROAD TEST
- Test Procedure
- "D" Range Test in NORM Or PWR Pattern Ranges
- "2" Range Test
- "L" Range Test
- "R" Range Test
- "P" Range Test
- Transfer Test
- Test Results
- HYDRAULIC PRESSURE TEST
- Main Line Pressure
- Main Line Pressure Test Results
- ACCUMULATOR BACK PRESSURE TEST (A-341E)
- Line Pressure Test
- Line Pressure Test Results
- DRIVE AXLE SHAFTS
- Removal
- Installation
- Removal & Installation
- Cleaning & Inspection
- TORQUE CONVERTER
- One-Way Clutch Check
- Drive Plate Runout Check
- Converter Sleeve Runout Check
- Disassembly
- Reassembly
- Inspection
- Disassembly & Inspection
- LOWER VALVE BODY
- UPPER VALVE BODY
- TRANSMISSION REASSEMBLY
- TORQUE SPECIFICATIONS