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 ECU-B2 fuse.
CHECK:

Check continuity of ECU-B2 fuse.

OK:
1. Continuity
1. NG: Replace the defective fuse.
2. OK: Go to Next Step.
Check voltage between terminal +B and GND of Wiper Control ECU.
CHECK:

Measure voltage between terminals +B and GND of Wiper Control ECU with connector being connected.

OK:
1. Voltage: 10 - 14 V
1. OK: Proceed to next circuit inspection shown on problem symptoms table (See PROBLEM SYMPTOMS TABLE ).
2. NG: Go to Next Step.
Check wire harness and connector between Wiper Control ECU and body ground (See PROCEDURE ).
1. NG: Repair or replace wire harness or connector.
2. OK: Check and repair wire harness and connector between ECU and battery.