2UZ-FE ENGINE CONTROL: RELAY: ON-VEHICLE INSPECTION (2008 Sequoia)

Last Modified: 11-29-2007		1.6 G
Service Category: Engine/Hybrid System	Section: Engine Control
Model Year: 2008	Model: Sequoia	Doc ID: RM000003BLB006X
Title: 2UZ-FE ENGINE CONTROL: RELAY: ON-VEHICLE INSPECTION (2008 Sequoia)

ON-VEHICLE INSPECTION

1. INSPECT CIRCUIT OPENING RELAY (C/OPN)

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
3 - 5	Battery voltage is not applied to terminals 1 and 2	10 kΩ or higher
3 - 5	Battery voltage is applied to terminals 1 and 2	Below 1 Ω

If the result is not as specified, replace the circuit opening relay.

2. INSPECT INTEGRATION RELAY (IG2)

(a) Measure the resistance of the IG2 MAIN fuse.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
IG2 MAIN fuse	Always	Below 1 Ω

If the result is not as specified, replace the IG2 MAIN fuse.

(b) Measure the resistance of the ignition relay No. 2 (IG2) circuit.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1C-1 - 1B-8	Battery voltage is not applied to terminals 1B-6 and 1B-7	10 kΩ or higher
1C-1 - 1B-8	Battery voltage is applied to terminals 1B-6 and 1B-7	Below 1 Ω

If the result is not as specified, replace the integration relay.

3. INSPECT INTEGRATION RELAY (EFI)

(a) Measure the resistance of the EFI No. 1 fuse.

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

Standard Resistance:

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

If the result is not as specified, replace the EFI No. 1 fuse.

(b) Measure the resistance of the EFI MAIN relay circuit.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1C-1 - 1B-4	Battery voltage is not applied to terminals 1B-2 and 1B-3	10 kΩ or higher
1C-1 - 1B-4	Battery voltage is applied to terminals 1B-2 and 1B-3	Below 1 Ω

If the result is not as specified, replace the integration relay.

4. INSPECT INTEGRATION RELAY (A/F)

(a) Measure the resistance of the A/F fuse.

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

Standard Resistance:

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

If the result is not as specified, replace the A/F fuse.

(b) Measure the resistance of the A/F sensor heater relay circuit.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1C-1 - 1A-4	Battery voltage is not applied to terminals 1A-2 and 1A-3	10 kΩ or higher
1C-1 - 1A-4	Battery voltage is applied to terminals 1A-2 and 1A-3	Below 1 Ω

If the result is not as specified, replace the integration relay.

5. INSPECT FUEL PUMP RELAY

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
3 - 5	Battery voltage is not applied to terminals 1 and 2	10 kΩ or higher
3 - 5	Battery voltage is applied to terminals 1 and 2	Below 1 Ω

If the result is not as specified, replace the fuel pump relay.