Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000025XYR
Model Year Start: 2023 Model: Corolla Prod Date Range: [09/2022 -           ]
Title: 2ZR-FXE (ENGINE CONTROL): RELAY: ON-VEHICLE INSPECTION; 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT CIRCUIT OPENING RELAY ASSEMBLY (C/OPN)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Auxiliary battery voltage is not applied between terminals 1 and 2

10 kΩ or higher

Auxiliary battery voltage is applied between terminals 1 and 2

Below 1 Ω

If the result is not as specified, replace the circuit opening relay assembly (C/OPN).

2. INSPECT NO. 1 ELECTRONIC FUEL INJECTION MAIN RELAY (EFI-MAIN NO.1)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Auxiliary battery voltage is not applied between terminals 1 and 2

10 kΩ or higher

Auxiliary battery voltage is applied between terminals 1 and 2

Below 1 Ω

If the result is not as specified, replace the No. 1 electronic fuel injection main relay (EFI-MAIN NO.1).

3. INSPECT NO. 2 ELECTRONIC FUEL INJECTION MAIN RELAY (EFI-MAIN NO.2)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Auxiliary battery voltage is not applied between terminals 1 and 2

10 kΩ or higher

Auxiliary battery voltage is applied between terminals 1 and 2

Below 1 Ω

If the result is not as specified, replace the No. 2 electronic fuel injection main relay (EFI-MAIN NO.2).

4. INSPECT NO. 3 ELECTRONIC FUEL INJECTION MAIN RELAY (EFI-MAIN NO.3)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Auxiliary battery voltage is not applied between terminals 1 and 2

10 kΩ or higher

Auxiliary battery voltage is applied between terminals 1 and 2

Below 1 Ω

If the result is not as specified, replace the No. 3 electronic fuel injection main relay (EFI-MAIN NO.3).

5. INSPECT IGP RELAY (IGP-MAIN)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Auxiliary battery voltage is not applied between terminals 1 and 2

10 kΩ or higher

Auxiliary battery voltage is applied between terminals 1 and 2

Below 1 Ω

If the result is not as specified, replace the IGP relay (IGP-MAIN).