TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.177

BE/Body Electrical Systems — Wiring Diagram, page 178

178 / 203
p.179
Wiring Diagram — MK4 Supra Body Electrical Systems, page 178
100%
Page text (OCR transcript)
BE–178
BODY ELECTRICAL SYSTEM – CRUISE CONTROL SYSTEM

WIRING DIAGRAM

Cruise Control
ECU
⊕ 12 V

Telltail Light RH

5
L-R
OD & TRIP
METER CIRCUIT
6 P
5
IF2 << P SPD
20

2 II1

L-R
3

Vehicle Speed Sensor

NC9786

INSPECTION PROCEDURE

1 Input signal check.

Vehicle speed | Indicator light blinking pattern

Above 40 km/h
(25 mph)
ON Blinks
OFF
0.25 sec 0.25 sec

Below 40 km/h
(25 mph)
ON Stays ON
OFF

BE4006

C (1) See input signal check on page BE–169.
(2) Check indicator light operation when driving with
vehicle speed above 40 km/h (25 mph), and with
vehicle speed below 40 km/h (25 mph).

OK Vehicle speed above 40 km/h (25 mph):
Indicator light blinks
Vehicle speed below 40 km/h (25 mph):
Indicator light stays on

NG OK Proceed to next circuit inspection shown on
matrix chart (See page BE–170).

2 Check speedometer circuit (See combination meter troubleshooting on
page BE–41).

OK NG Repair or replace speed sensor, harness,
connector or combination meter assembly.

Check harness and connector for loose connection.
If connection is normal, check and replace ECU.