Integration Relay: Inspection

INSPECT ENGINE ROOM JUNCTION BLOCK ASSEMBLY

Fig 1: Engine Room Junction Block Assembly Circuit Diagram

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Inspect the EFI No. 1 fuse.

Remove the EFI No. 1 fuse.

Using an ohmmeter, measure the resistance of the fuse.

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
EFI No. 1 fuse	Always	Below 1 Ω

Inspect the A/F fuse.

Remove the A/F fuse.

Using an ohmmeter, measure the resistance of the fuse.

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
A/F fuse	Always	Below 1 Ω

Inspect EFI relay.

Measure the resistance according to the value (s) in the table below.

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
2E-12 - 2E-7	No battery voltage applied	10 kΩ or higher
2E-12 - 2E-7	Battery voltage applied between terminals 2E-10 and 2E-9	Below 1 Ω

NOTE: While using the battery for the inspection, do not bring the positive (+) and negative (-) tester probes too close to each other as a short circuit may occur.

Fig 2: Identifying Engine Room Junction Block Assembly

Inspect the A/F relay.

Measure the resistance according to the value (s) in the table below.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
2A-4 - 2C-1	No battery voltage applied	10 kΩ or higher
2A-4 - 2C-1	Battery voltage applied between terminals 2E-10 and 2E-7	Below 1 Ω

NOTE: While using the battery for the inspection, do not bring the positive (+) and negative (-) tester probes too close to each other as a short circuit may occur.

Fig 3: Identifying Engine Room Junction Block Assembly