toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Component Tests and General Diagnostics|Page 1972 > < Component Tests and General Diagnostics|Page 1970
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(a) Check the harness and connector between the EFI relay and ECM.

(1) Remove the EFI relay from the engine room J/B.
(2) Disconnect the ECM connector.
(3) Measure the resistance between the terminals.
Standard resistance:
Check for open
Check for short

(b) Check the harness and connector between the EFI relay and body ground.

(1) Measure the resistance between the terminals.
Standard resistance:
Check for open

(2) Reinstall the EFI relay to the engine room J/B.
(3) Reconnect the ECM connector.
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR
NG -- CHECK AND REPLACE HARNESS AND CONNECTOR (TERMINAL +B OF ECM - BATTERY POSITIVE
TERMINAL)

Component Tests and General Diagnostics|Page 1972 > < Component Tests and General Diagnostics|Page 1970