TOYOTA SUPRA 1995 Service Repair Manual

TRAC Indicator Light Circuit
CIRCUIT DESCRIPTION
The TRAC indicator blinks during TRAC operation.
This indicator is also used for warnings when the trouble occurs and for displaying diagnostic trouble
codes.
Repair or replace harness or connector.
Check and replace TRAC ECU.
Repair circuit indicated by the code output.
Check diagnostic trouble code (See page BR±126).
INSPECTION PROCEDURES
Troubleshoot in accordance with flow chart instructions for each trouble symptom.
TRAC Indicator light does not light up
Go to Combination Meter Troubleshooting on page BE±43.
TRAC Indicator light remains ON
Check for short in harness and connector between TRAC ECU and TRAC
indicator light (See page IN±30).
Indicator light remains ONOutput
NG Code
BR±162± BRAKE SYSTEMTRACTION CONTROL SYSTEM (TRAC)

Tc Terminal Circuit
CIRCUIT DESCRIPTION
By connecting terminals Tc and E1 of DLC1 or DLC2, the ECU displays the diagnostic trouble code
by blinking the TRAC indicator light.
± BRAKE SYSTEMTRACTION CONTROL SYSTEM (TRAC)BR±163

(See page IN±30).
Check voltage between terminals Tc and E1 of DLC2 or DLC1.
Turn ignition switch ON
Measure voltage between terminals Tc and E1 of DLC2
or DLC1.
Voltage: 10 Ð 14 V
Proceed to next circuit inspection shown on
problem symptoms chart (See page BR±133).
Repair or replace harness or connector.
Check and replace TRAC ECU.
Check for open and short in harness and connector of symptoms con-
nected to Tc terminal (See page IN±30).
INSPECTION PROCEDURE
BR±164± BRAKE SYSTEMTRACTION CONTROL SYSTEM (TRAC)

Check for Fluid Leakage
± BRAKE SYSTEMTRACTION CONTROL SYSTEM (TRAC)BR±165

SERVICE SPECIFICATIONS
SERVICE DATA
 Brake pedal height from asphalt sheet 154.2±164.2 mm (6.07±6.46 in.)
 Brake pedal freeplay 1±6 mm (0.04±0.24 in.) 
 
 
Brake pedal reserve distance at 490 N (50 kgf, 110.2 lbf)
2JZ±GTE
2JZ±GE
 
 
 More than 70 mm (2.76 in.)
More than 72 mm (2.83 in.)
 
 Brake booster push rod to piston clearance w/SST)
 
 0 mm (0 in.)
 Front brake pad thickness (2JZ±GTE) STD 12.0 mm (0.472 in.)
 
 Front brake pad thickness (2JZ±GTE) Minimum 
 1.0 mm (0.039 in.)
 Front brake pad thickness (2JZ±GE) STD 11.0 mm (0.433 in.)
 Front brake pad thickness (2JZ±GE) Minimum 1.0 mm (0.039 in.) 
 Front brake disc thickness (2JZ±GTE) STD
 
 30.0 mm (1.181 in.)
 Front brake disc thickness (2JZ±GTE) Minimum 28.0 mm (1.102 in.)
 Front brake disc thickness (2JZ±GE) STD 32.0 mm (1.260 in.) 
 Front brake disc thickness (2JZ±GE) Minimum
 
 30.0 mm (1.181 in.)
 Front brake disc runout Maximum 0.05 mm (0.0020 in.)
 
 Rear brake disc pad thickness (2JZ±GTE) Maximum 
 11.0 mm (0.433 in.)
 Rear brake disc pad thickness (2JZ±GTE) Minimum 1.0 mm (0.039 in.)
 Rear brake disc pad thickness (2JZ±GE) STD 10.0 mm (0.394 in.) 
 Rear brake disc pad thickness (2JZ±GE) Minimum
 
 1.0 mm (0.039 in.)
 Rear brake disc thickness STD 16.0 mm (0.630 in.)
 Rear brake disc thickness Minimum 15.0 mm (0.591 in.) 
 Rear brake disc runout Maximum
 
 0.05 mm (0.0020 in.)
 Rear brake disc inside diameter STD 190 mm (7.48 in.)
 
 Rear brake disc inside diameter Maximum 
 191 mm (7.52 in.)
 Parking brake lining thickness STD 2.5 mm (0.098 in.)
 Parking brake lining thickness Minimum 1.0 mm (0.039 in.) 
 Parking brake lever travel at 196 N (20 kgf, 44.1 lbf)
 
 5±8 clicks
 Parking brake clearance between rear shoe and lever Less than 0.35 mm (0.012 in.)
 
 
 
 
Parking brake adjusting shim thickness for rear disc brake
 
 
 
 
0.3 mm (0.012 in.)
0.6 mm (0.024 in.)
0.8 mm (0.031 in.) 2JZ±GTE only
0.9 mm (0.035 in.) 2JZ±GE only
BR±166± BRAKE SYSTEMSERVICE SPECIFICATIONS

TORQUE SPECIFICATIONS
 Part tightened NVm KgfVcm ftVlbf 
 Master cylinder X Piston stopper bolts
 
 10
 
 100
 
 7
 Master cylinder X Reservoir 1.7 17.5 15.2 in.Vlbf
 Master cylinder X Brake booster 13 130 9 
 Brake line union nut M10
 
 15
 
 155
 
 11
 Brake line union nut M12 20 200 15
 
 Brake booster clevis lock nut 
 25 
 260 
 19
 Brake booster X Pedal bracket 13 130 9
 Bleeder plug 11 11 0 8 
 Front disc brake caliper X Steering knuckle 2JZ±GTE
 
 11 8
 
 1,200
 
 87
 Front disc brake torque plate X Steering knuckle 2JZ±GE 11 8 1,200 87
 Front disc brake caliper installation bolt 2JZ±GE 34 350 25 
 Front disc brake caliper X Flexible hose union bolt
 
 30
 
 310
 
 22
 Rear disc brake caliper X Axle carrier 2JZ±GTE 104 1,065 77
 
 Rear disc brake torque plate X Axle carrier 2JZ±GE 
 104 
 1,065 
 77
 Rear disc brake caliper installation bolt 2JZ±GE 34 350 25
 Rear disc brake caliper X Flexible hose union bolt 30 310 22 
 ABS actuator X Actuator bracket
 
 5.4
 
 55
 
 48 in.Vlbf
 ABS actuator X 2±way 8.8 90 78 in.Vlbf
 ABS actuator bracket X Body 19 195 14 
 Cruise control actuator X Body
 
 19
 
 195
 
 14
 Cruise control actuator X ABS actuator X Body 19 195 14
 
 Front speed sensor installation bolt 
 7.8 
 80 
 69 in.Vlbf
 Rear speed sensor installation bolt 7.8 80 69 in.Vlbf
 TRAC actuator bracket X TRAC pump bracket or body 13 130 9 
 TRAC pump bracket X Body
 
 19
 
 195
 
 14
 TRAC pump bracket X Damper 7.8 80 69 in.Vlbf
 TRAC pump bracket X TRAC pump bracket No.2 7.8 80 69 in.Vlbf 
 TRAC pump X TRAC pump bracket No.2
 
 7.8
 
 80
 
 69 in.Vlbf
 TRAC pump or damper X Union bolt 46 465 34
± BRAKE SYSTEMSERVICE SPECIFICATIONSBR±167

CHARGING SYSTEM
CH±1

1. Check that the battery cables are connected to the correct terminals.
2. Disconnect the battery cables when the battery is given a quick charge.
3. Do not do these tests with a high voltage insulation resistance tester.
4. Never disconnect the battery while the engine is running.
PREPARATION
SST (SPECIAL SERVICE TOOLS)
Injection Pump Camshaft Bearing
Cone Replacer
Front Hub & Drive Pinion Bearing
Tool Set
Replacer
Alternator Rear Bearing Puller
Alternator Rear Bearing Replacer
Alternator Pulley Set Nut Wrench
Set
Puller B Set
Rotor rear bearing cover
Rotor front bearing
Rotor rear bearing
Rectifier end frame
RECOMMENDED TOOLS
TOYOTA Electrical Tester Set
Engine Adjust Kit
CH±2± CHARGING SYSTEMPREPARATION

EQUIPMENT
 Battery specific gravity gauge Except maintenance±free battery
 Torque wrench 
 Vernier calipers Rotor (Slip ring)
ON±VEHICLE INSPECTION
1. CHECK BATTERY ELECTROYTE LEVEL AND VOLTAGE
(a) Check the electrolyte quantity of each cell.
Maintenance±Free Battery:
If under the lower level, replace the battery (or add distilled
water if possible.). Need to check the charging system.
Except Maintenance±Free Battery:
If under the lower level, add distilled water.
(b) Except Maintenance±Free Battery:
Check the specific gravity of each cell.
Standard specific gravity:
1.27±1.29 at 205C (685F)
If the specific gravity is less than specification, charge the
battery.
(c) Maintenance±Free Battery:
Measure the battery voltage between the negative (±) and
positive (+) terminals of the battery.
Standard voltage:
12.7±12.9 V at 205C (685F)
HINT:
wBefore measuring the voltage, turn the ignition switch
OFF and turn off the electrical systems (headlight,
blower motor, rear defogger etc.) for 60 seconds to
remove the surface charge.
wIf the vehicle has been running, wait 5 minutes or more
after the vehicle stops before measuring the battery
voltage.
If the voltage is less than specification, charge the battery.
HINT: Check the indicator as shown in the illustration.
± CHARGING SYSTEMPREPARATIONCH±3

EQUIPMENT
 Battery specific gravity gauge Except maintenance±free battery
 Torque wrench 
 Vernier calipers Rotor (Slip ring)
ON±VEHICLE INSPECTION
1. CHECK BATTERY ELECTROYTE LEVEL AND VOLTAGE
(a) Check the electrolyte quantity of each cell.
Maintenance±Free Battery:
If under the lower level, replace the battery (or add distilled
water if possible.). Need to check the charging system.
Except Maintenance±Free Battery:
If under the lower level, add distilled water.
(b) Except Maintenance±Free Battery:
Check the specific gravity of each cell.
Standard specific gravity:
1.27±1.29 at 205C (685F)
If the specific gravity is less than specification, charge the
battery.
(c) Maintenance±Free Battery:
Measure the battery voltage between the negative (±) and
positive (+) terminals of the battery.
Standard voltage:
12.7±12.9 V at 205C (685F)
HINT:
wBefore measuring the voltage, turn the ignition switch
OFF and turn off the electrical systems (headlight,
blower motor, rear defogger etc.) for 60 seconds to
remove the surface charge.
wIf the vehicle has been running, wait 5 minutes or more
after the vehicle stops before measuring the battery
voltage.
If the voltage is less than specification, charge the battery.
HINT: Check the indicator as shown in the illustration.
± CHARGING SYSTEMON±VEHICLE INSPECTIONCH±3