Inspection Procedure

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

Check voltage between terminal PI and GND of ECM connector.

PREPARATION:

Turn ignition switch ON.

CHECK:

Measure voltage between terminals PI and GND of ECM connector when main switch is held on and off.

OK:

SWITCH VOLTAGE REFERENCE

Switch position	Voltage
OFF	9 - 14 V
ON	0 -3 V

Fig 1: Measuring Voltage Between Terminals PI And GND Of ECM Connector

OK : Proceed to next circuit inspection shown on problem symptom table (See PROBLEM SYMPTOMS TABLE ).
NG : Go to Next Step

Check combination meter (See CIRCUIT ).
1. NG : Replace combination meter.
2. OK : Check and replace ECM (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).