toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Component Tests and General Diagnostics|Page 3572 > < Component Tests and General Diagnostics|Page 3570
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The injectors are provided to the intake manifold. They inject fuel into the cylinders based on the signals from the ECM.

DIAGNOSTIC PROCEDURE

1. CHECK VOLTAGE OF TERMINALS #1, #2, #3 AND #4.

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If OK proceed to step 3.

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If not OK proceed to step 2.

2. CHECK AM2 FUSE.

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If OK check for open in harness and connector between ECM and battery.

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If not OK check for short in all the harness and components connected to AM2 fuse.

3. CHECK CONTINUITY BETWEEN TERMINALS E01, E02 AND BODY GROUND.

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If OK proceed to step 4.

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If not OK repair or replace harness or connector.

4. CHECK OPERATION OF INJECTORS.

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If OK check and replace ECM.

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If not OK replace injector.

Inspection Procedure

PROCEDURE

Component Tests and General Diagnostics|Page 3572 > < Component Tests and General Diagnostics|Page 3570