Inspection Procedure
WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT FUSE
- Remove the D P/SEAT and D MPX-B 1 fuses from the main body ECU.
- Remove the P P/SEAT1 and P MPX-B fuses from the passenger side junction block.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
TESTER CONNECTION / SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition D P/SEAT fuse Always Below 1 Ω D MPX-B 1 fuse Always Below 1 Ω P P/SEAT1 fuse Always Below 1 Ω P MPX-B fuse Always Below 1 Ω NG: REPLACE FUSE
OK: Go to Next Step
- CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - BATTERY AND BODY GROUND)
- Disconnect the e45*1, e46*1, e20*2 and e18*2 switch connectors.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
for Driver Side
TESTER CONNECTION / SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition e45-7 (+B) - Body ground Always 11 to 14 V e46-4 (SYSB) - Body ground Always 11 to 14 V for Passenger Side
TESTER CONNECTION / SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition e18-7 (+B) - Body ground Always 11 to 14 V e20-4 (SYSB) - Body ground Always 11 to 14 V - Measure the resistance according to the value(s) in the table below.
Standard Resistance
for Driver Side
TESTER CONNECTION / SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition e45-6 (GND) - Body ground Always Below 1 Ω Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
for Passenger Side
TESTER CONNECTION / SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition e18-6 (GND) - Body ground Always Below 1 Ω NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE FRONT POWER SEAT SWITCH (See DISASSEMBLY )