Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000001H4YM
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 09/2022]
Title: 2ZR-FXE (ENGINE CONTROL): RELAY: ON-VEHICLE INSPECTION; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 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 WATER PUMP RELAY (ENG W/PMP)

(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 water pump relay (ENG W/PMP).

3. INSPECT FUEL OPEN RELAY (FUEL 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 fuel open relay (FUEL OPN).