TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.180
BE/Body Electrical Systems181 / 203
p.182
Check control switch. — MK4 Supra Body Electrical Systems, page 181
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BE-181 BODY ELECTRICAL SYSTEM – CRUISE CONTROL SYSTEM 3 Check control switch. Disconnect P (1) Remove steering wheel center pad. (2) Disconnect control switch connector (See page RS Section). C Measure resistance between terminals 3 and 4 of control switch connector when control switch is operated. OK Switch position Resistance Neutral 1 MΩ or higher RES/ACC 60 – 80 Ω SET/COAST 180 – 220 Ω CANCEL 400 – 440 Ω Hint When diagnostic trouble code 34 is displayed, carefully check that resistance is always ∞ in neutral position, particularly when switching between RES/ACC and SET/COAST. BE4061 N08856 OK NG ) Replace cruise control switch. 4 Check for open and short in harness and connector between ECU and control switch (See page IN–30). OK NG ) Repair or replace harness or connector. Check and replace ECU.