1991 LEXUS SC400 Service Repair Manual

fold seats bluetooth bonnet open hood navigation system coolant temperature

Page 297 of 4087

LEXUS SC400 1991 Service Repair Manual
MEASURE ACCUMULATOR BACK PRESSURE
AT0QU±01
NOTICE:
Perform the test at normal operating fluid temperature 50±80 C (122±176 F).
Be careful to prevent the oil pressure gauge hose from interferi

Page 298 of 4087

$LEXUS SC400 1991 Service Repair Manual (f) Fully apply the parking brake and chock the 4 wheels. (g) Start the engine and check idling RPM. (h) Keep your left foot pressed firmly on the brake pedal and shift into D p\ osition. (i) Mea$

Page 299 of 4087

LEXUS SC400 1991 Service Repair Manual
SPECIFIED ACCUMULATOR BACK PRESSURE
Condition if ECM terminal SLN Not ground kPa (kgf/cm2, psi) Ground kPa (kgf/

Page 300 of 4087

LEXUS SC400 1991 Service Repair Manual
MANUAL SHIFTING TEST
AT0QV±01
HINT: With this test, it can be determined whether the trouble
is within the electrical circuit or is a mechanical problem in the
transmission.
1. DISCONNECT SOLENOID

Page 301 of 4087

$LEXUS SC400 1991 Service Repair Manual DIAGNOSTIC TROUBLE CODE CHART AT0LR±04 If a malfunction code is displayed during the diagnostic trouble code chec\ k, check the circuit listed for that code in the table below and proceed to the pag$

Page 302 of 4087

$LEXUS SC400 1991 Service Repair Manual \ \ \ \ Trouble Area O/D OFF Light*1 Blinks $

\

\

\

\

Trouble Area

O/D OFF
Light*1
Blinks

Memory*2

See
Page
\
\

\
\
Harness or connector between No. 1 vehicle speed sensor and ECM.
\
\
No. 1 vehicle speed sensor.

AT±78\
\
Combination meter. AT±78
\
\
ECM
\
\

\

\
\

\

\

Harness or connector between No.4 solenoid and ECM.
\
\
No.4 solenoid.XAT±82
\
\
ECM
\
\

\
\

\
\
Harness or connector between No.2 vehicle speed sensor and ECM.
\
\
No.2 vehicle speed sensor. AT±86\

\
ECM

\

\

\

\
\

\
\

Harness or connector between No.1 solenoid and ECM.
\
\
No.1 solenoid.AT±90
\
\
ECM
\
\

\
\

\

\
Harness or connector between No.2 solenoid and ECM.\

\

\

No.2 solenoid.AT±90
\
\
ECM
\
\

\
\

\
\
Harness or connector between No.3 solenoid valve and ECM.
\
\
No.3 solenoid valve.XAT±94\
\
ECM\

\
\

\

\

\
\

Harness or connector between O/D direct clutch speed sensor and ECM.
\
\
O/D direct clutch speed sensor.AT±98
\
\
ECM
\
\

±
A304E (1UZ±FE) AUTOMATIC TRANSMISSION TROUBLESHOOTINGAT±61
WhereEverybodyKnowsYourName

Page 303 of 4087

$LEXUS SC400 1991 Service Repair Manual *1: ªOº mark means ªO/D OFFº light blinks once every 2 seconds.\ ªXº mark means ªO/D OFFº light never blinks. *2: ªOº mark means the ECM memorizes the malfunction code if the ECM detects t$

Page 304 of 4087

LEXUS SC400 1991 Service Repair Manual
STANDARD VALUE OF ECM TERMINAL
AT0L9±04
(*A=E9, B=E10)
±
A304E (1UZ±FE) AUTOMATIC TRANSMISSION TROUBLESHOOTINGAT±63
WhereEverybodyKnowsYourName

Load next 8 pages

Page: < prev 1-10 ... 265-272 273-280 281-288 289-296 297-304 305-312 313-320 321-328 329-336 ... 4088 next >

driver seat adjustment navigation transmission oil gearbox mileage fuel pressure