Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT RELAY (Marking: EFI OR ECD)

Remove the EFI OR ECD relay from engine room relay block.

Measure the resistance of the relay.

Standard resistance

RELAY (MARKING: EFI OR ECD)

Tester Condition	Specified Condition
1 - 3	10 kΩ or higher
1 - 3	Below 1 Ω (when battery voltage is applied to terminals 2 and 4)

Fig 1: Inspecting Relay (Marking: EFI Or ECD)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE RELAY

OK: GO TO NEXT STEP

CHECK WIRE HARNESS (ENGINE ROOM JUNCTION BLOCK - ECM, BATTERY AND BODY GROUND)

Remove the EFI OR ECD relay from the engine room relay block.
Disconnect the E5 and E9 ECM connectors.

Measure the voltage of the wire harness side connector.

Standard voltage

ENGINE ROOM JUNCTION BLOCK - ECM, BATTERY AND BODY GROUND (VOLTAGE)

Tester Connection	Specified Condition
R/B EFI OR ECD relay terminal 3 - Body ground	10 to 14 V

Measure the resistance of the wire harness side connectors.

Standard resistance

ENGINE ROOM JUNCTION BLOCK - ECM, BATTERY AND BODY GROUND (RESISTANCE)

Tester Connection	Specified Condition
R/B EFI OR ECD relay terminal 4 - E9-8 (MREL)	Below 1 Ω
R/B EFI OR ECD relay terminal 2 - Body ground	Below 1 Ω
R/B EFI OR ECD relay terminal 1 - E9-1 (+B)	Below 1 Ω
R/B EFI OR ECD relay terminal 1 - E9-2 (+B2)	Below 1 Ω
E5-7 (E01) - Body ground	Below 1 Ω

Fig 2: Checking Wire Harness (Engine Room Junction Block - ECM, Battery And Body Ground)

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: REPLACE ECM