Check For Shorts In All Harnesses And Connectors Connected To Fuse And Replace Fuse

CHECK HARNESS AND CONNECTOR (ECM - EFI MAIN FUSE, EFI MAIN FUSE BATTERY)

Engine Room No. 1 Relay Block:

EFI MAIN

Engine Room No. 1 Relay Block:

EFI MAIN

Wire Harness Side:

Wire Harness Side:

ECM Connector

BATT

ECM Connector

A127761E01

(a) Check the harness and the connector between the EFI MAIN fuse and ECM.

(1) Remove the EFI MAIN fuse from the engine No. 1 room relay block.

(2) Disconnect the A9 ECM connector.

(3) Measure the resistance.

Standard resistance (Check for open)

Tester Connections

Specified Conditions

2 (EFI MAIN fuse) - A9-20 (BATT)

Below 1 Q

Standard resistance (Check for short)

Tester Connections

Specified Conditions

2 (EFI MAIN fuse) or A9-20 (BATT) -Body ground

10 kQ or higher

(4) Reconnect the ECM connector.

(5) Reinstall the EFI MAIN fuse.

(b) Check the harness and the connector between the EFI MAIN fuse and battery.

(1) Remove the EFI MAIN fuse from the engine room No. 1 relay block.

(2) Disconnect the positive battery terminal.

(3) Check the resistance.

Standard resistance (Check for open)

A127761E01

Tester Connections

Specified Conditions

Battery positive terminal - 1 (EFI MAIN fuse)

Below 1 Q

Standard resistance (Check for short)

Tester Connections

Specified Conditions

Battery positive terminal or 1 (EFI MAIN fuse) - Body ground

10 kQ or higher

Reconnect the positive battery terminal. Reinstall the EFI MAIN fuse.

REPAIR OR REPLACE HARNESS OR CONNECTOR

INSPECT BATTERY

(a) Check that the battery is not depleted. OK:

Battery is not depleted

REPLACE BATTERY

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