Integration Relay: Inspection: Inspection

INSPECT INTEGRATION NO. 1 RELAY

Fig 1: Identifying Integration Relay Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Inspect the EFI fuse.

Disconnect the fuse.

Using an ohmmeter, measure the resistance of the fuse.

Standard resistance

Tester Connection	Condition	Specified Condition
EFI fuse	Always	Below 1 Ω

Inspect the EFI relay.

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

Standard resistance

Tester Connection	Condition	Specified Condition
A1 - C1	When battery voltage absent	Below 1 Ω
A1 - A4	When battery voltage absent	10 kΩ or higher
A4 - C1	When battery voltage absent	10 kΩ or higher
A1 - A4	Apply battery voltage between terminals A2 and A3	Below 1 Ω
A4 - C1	Apply battery voltage between terminals A2 and A3	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.

Inspect the cooling fan relay.

Fig 2: Identifying Cooling Fan Relay Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard resistance

Tester Connection	Condition	Resistance
B5 - B8	When battery voltage absent	10 kΩ or higher
B5 - B8	When battery voltage applied to terminals B6 and B7	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.

Inspect the IG2 relay.

Fig 3: Identifying IG2 Relay Connector Terminals

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

Standard resistance

Tester Connection	Condition	Resistance
B1 - B4	When battery voltage absent	10 kΩ or higher
B1 - B4	When battery voltage applied to terminals B2 and B3	Below 1 Ω