lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

Component Tests and General Diagnostics|Page 3122 > < Component Tests and General Diagnostics
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(a) Turn the engine switch on (IG).
(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

NG -- CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

(a) Disconnect the ECM connector.
(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance (Check for Open):

(c) Reconnect the ECM connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. INSPECT ECM (IGSW VOLTAGE)

(a) Turn the engine switch on (IG).
(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Component Tests and General Diagnostics|Page 3122 > < Component Tests and General Diagnostics