TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.168
BE/Body Electrical Systems169 / 203
p.170
INPUT SIGNAL CHECK — MK4 Supra Body Electrical Systems, page 169
100%
BE–169 BODY ELECTRICAL SYSTEM – CRUISE CONTROL SYSTEM INPUT SIGNAL CHECK Output Code 1. (a) For check No.1 No.3 Turn the ignition switch on. (b) For check No.4 Jack up the vehicle. Start the engine. 2. Turn the control switch to SET/COAST position or RES/ACC position and hold it down or up (1). 3. Push the main switch on (2). 4. Check that the CRUISE MAIN indicator light blinks twice or 3 times repeatedly. 5. Turn the SET/COAST switch or RES/ACC position off. 6. Operate each switch as listed in the table below. 7. Read the blinking pattern of the CRUISE MAIN indicator light. 8. After performing the check, turn the main switch off. HINT: When two or more signals are input to the ECU, only the lowest–numbered code is displayed. No. | Operation Method | CRUISE MAIN Indicator Light Blinking Pattern | Diagnosis 1 | Turn SET/COAST switch ON. | Light ON 0.25 0.25 BE4005 OFF 1 sec | SET/COAST switch circuit is normal. 2 | Turn RES/ACC switch ON. | Light ON BE4008 OFF | RES/ACC switch circuit is normal. 3 | Turn CANCEL switch ON. | Light ON Switch OFF Turn stop light switch ON. (Depress brake pedal) | OFF - - - - - - - - Switch ON | CANCEL switch circuit is normal. Stop light switch circuit is normal. Turn parking brake switch ON. (Pull up the parking brake lever). BE4008 | Parking brake switch circuit is normal. Turn neutral start switch OFF. (Shift to EXCEPT D RANGE). | ON Switch ON Turn clutch switch OFF. (Depress clutch pedal) | OFF - - - - - - - - Switch OFF BE4005 | Neutral start switch circuit is normal. Clutch switch circuit is normal. 4 | Drive at 40 km/h (25 mph) or higher. | Light ON BE4005 OFF | Speed sensor is normal. Drive at 40 km/h (25 mph) or below. | Light ON BE4035 OFF - - - - - - - - - - - - - - -