Inspection Procedure

WARNING: This page is about a different car, the 2003 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.

Check voltage between terminal SPD of body ECU (Main) and body ground.
PREPARATION:
1. Turn the ignition switch ON.
CHECK:

Measure voltage between terminal SPD and body ground.

OK:
1. Voltage is generated intermittently.
Fig 1: Terminals Voltage Graph
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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 combination meter and Body ECU (Sub) (See PROBLEM SYMPTOMS TABLE ).
1. NG : Repair or replace wire harness or connector.
2. OK : Proceed to next circuit inspection shown on problem symptoms table (See PROBLEM SYMPTOMS TABLE ).