Inspection Procedure
WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT FUSE (ECU IG NO. 1)
- Remove the ECU-IG No. 1 fuse from the instrument panel J/B.
- Measure the resistance of the ECU-IG No. 1 fuse.
Standard resistance: Below 1 Ω
NG: REPLACE FUSE
OK: Go to Next Step
- INSPECT MULTIPLEX TILT AND TELESCOPIC ECU (IG TERMINAL VOLTAGE)
- Disconnect the E79 connector from the multiplex tilt and telescopic ECU.
- Measure the voltage according to the value(s) in the table below.
Standard voltage
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition IG (E79-8) - GND (E79-11) Engine switch on (IG) 10 to 14 V
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG: Go to Next Step
- CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition GND (E79-11) - Body ground Always Below 1 Ω
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE MULTIPLEX TILT AND TELESCOPIC ECU
- Measure the resistance according to the value(s) in the table below.