TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
p.152
BE/Body Electrical Systems153 / 203
p.154
INSPECTION PROCEDURES — MK4 Supra Body Electrical Systems, page 153
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BE–153 BODY ELECTRICAL SYSTEM – THEFT DETERRENT AND DOOR LOCK CONTROL SYSTEM INSPECTION PROCEDURES 1 Check POWER M–fuse. R/B No.2 POWER M-Fuse N09001 P Remove POWER M fuse from R/B No. 2 C Check continuity of POWER M–fuse. OK Continuity OK NG Check for short in all the harness and components connected to the DOOR fusible link (See attached wiring diagram). *1 2 Check voltage between terminals +B2 of ECU connector and body ground. LOCK +B2 BE3843 N12009 P (1) Remove the instrument panel. See BO section. (2) Disconnect the ECU connector. C Measure voltage between terminals +B2 of ECU connector and body ground. OK Voltage: 10 – 14 V NG OK Proceed to next circuit inspection shown on matrix chart (See page BE–123). Check and repair harness and connectors between ECU and battery (See page IN–30). *1: The power source is supplied to the actuator (door lock motor, through the theft deterrent and door lock ECU. Accordingly, if a short circuit of the W/H or actuator occurs in the actuator circuit the POWER M–Fuse may become OPEN, so also inspect the actuator (door lock motor circuit on page BE–154).