Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001GYKU
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 11/2022]
Title: 2ZR-FAE (ENGINE CONTROL): RELAY: ON-VEHICLE INSPECTION; 2020 - 2023 MY Corolla [01/2019 - 11/2022]

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

Battery voltage not applied to terminals 1 and 2

10 kΩ or higher

Battery voltage applied to 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)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Battery voltage not applied to terminals 1 and 2

10 kΩ or higher

Battery voltage applied to 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).