Inspection Procedure
WARNING: This page is about a different car, the 2005 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
- Check pattern select switch (PWR mode switch).
PREPARATION:
Disconnect the pattern select switch connector.
CHECK:
Check continuity between terminals 3 and 5 of pattern select switch connector when the select switch is set to PWR and NORM positions.
OK:
PATTERN SELECT SWITCH AND SPECIFIED CONDITIONPattern select switch Specified condition PWR Continuity NORM No continuity Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- NG : Replace the pattern select switch.
- OK : Go to Next Step.
- Check harness and connector between terminal PWR of ECM and body ground.
PREPARATION:
- Connect the pattern select switch connector.
- Disconnect the connector of ECM.
CHECK:
Check continuity between terminal PWR of ECM and body ground when the pattern select switch is set to the PWR (POWER) position and NORM (NORMAL) position.
OK:
PATTERN SELECT SWITCH AND SPECIFIED CONDITIONPattern select switch Specified condition PWR Continuity NORM No Continuity HINT:
The ECM uses the normal pattern signal if the PWR signal is not input.
- OK : Proceed to next circuit inspection shown on matrix chart (See PROBLEM SYMPTOMS TABLE ).
- NG : Repair or replace harness or connector (See PROCEDURE ).