Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001C9SV
Model Year Start: 2019 Model: GR Corolla Prod Date Range: [06/2018 - 09/2022]
Title: METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for Gasoline Model): Steering Pad Switch Circuit; 2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022]

Steering Pad Switch Circuit

DESCRIPTION

The combination meter assembly and steering pad switch assembly are connected via direct line. The multi-information display in the combination meter assembly are operated using the switches of the steering pad switch assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

PROCEDURE

1.

INSPECT STEERING PAD SWITCH ASSEMBLY

(a) Remove the steering pad switch assembly.

Click here 2019 MY Corolla Corolla Hatchback Corolla HV [06/2018 - 01/2019]; STEERING COLUMN: STEERING PAD SWITCH (except G16E-GTS): REMOVAL 2020 MY Corolla Corolla Hatchback Corolla HV [01/2019 - 03/2019]; STEERING COLUMN: STEERING PAD SWITCH (except G16E-GTS): REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV [03/2019 - 09/2022]; STEERING COLUMN: STEERING PAD SWITCH (except G16E-GTS): REMOVAL

(b) Inspect the steering pad switch assembly.

Click here 2019 MY Corolla Corolla Hatchback Corolla HV [06/2018 - 01/2019]; STEERING COLUMN: STEERING PAD SWITCH (except G16E-GTS): INSPECTION 2020 MY Corolla Corolla Hatchback Corolla HV [01/2019 - 03/2019]; STEERING COLUMN: STEERING PAD SWITCH (except G16E-GTS): INSPECTION 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV [03/2019 - 09/2022]; STEERING COLUMN: STEERING PAD SWITCH (except G16E-GTS): INSPECTION

NG

REPLACE STEERING PAD SWITCH ASSEMBLY 2019 MY Corolla Corolla Hatchback Corolla HV [06/2018 - 01/2019]; STEERING COLUMN: STEERING PAD SWITCH (except G16E-GTS): REMOVAL 2020 MY Corolla Corolla Hatchback Corolla HV [01/2019 - 03/2019]; STEERING COLUMN: STEERING PAD SWITCH (except G16E-GTS): REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV [03/2019 - 09/2022]; STEERING COLUMN: STEERING PAD SWITCH (except G16E-GTS): REMOVAL

OK

2.

INSPECT SPIRAL CABLE SUB-ASSEMBLY

(a) Remove the spiral cable sub-assembly.

Click here 2019 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - 01/2019]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: REMOVAL 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: REMOVAL

(b) Inspect the spiral cable sub-assembly.

Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: INSPECTION

NG

REPLACE SPIRAL CABLE SUB-ASSEMBLY 2019 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - 01/2019]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: REMOVAL 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; SUPPLEMENTAL RESTRAINT SYSTEMS: SPIRAL CABLE: REMOVAL

OK

3.

CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - COMBINATION METER ASSEMBLY)

(a) Disconnect the I4 combination meter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I82-11 (+DP) - I4-32 (MSM+)

Always

Below 1 Ω

I82-10 (+DP2) - I4-15 (MSTI)

Always

Below 1 Ω

I82-11 (+DP) or I4-32 (MSM+) - Body ground

Always

10 kΩ or higher

I82-10 (+DP2) or I4-15 (MSTI) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

4.

CHECK COMBINATION METER ASSEMBLY (OUTPUT VOLTAGE)

*a

Front view of wire harness connector

(to Spiral Cable Sub-assembly)

(a) Connect the I4 combination meter assembly connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

I82-11 (+DP) - Body ground

Engine switch on (IG)

4.8 to 5.2 V

I82-10 (+DP2) - Body ground

Engine switch on (IG)

4.8 to 5.2 V
NG

REPLACE COMBINATION METER ASSEMBLY 2019 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - 01/2019]; METER / GAUGE / DISPLAY: COMBINATION METER: REMOVAL 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; METER / GAUGE / DISPLAY: COMBINATION METER: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; METER / GAUGE / DISPLAY: COMBINATION METER: REMOVAL

OK

5.

CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - RADIO AND DISPLAY RECEIVER ASSEMBLY)

(a) Disconnect the I55 radio and display receiver assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I82-4 (EAU) - I55-24 (SWG)

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

6.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BODY GROUND)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I55-1 (GND1) - Body ground

Always

Below 1 Ω
OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 2019 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - 01/2019]; AUDIO / VIDEO: RADIO RECEIVER: REMOVAL 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; AUDIO / VIDEO: RADIO RECEIVER: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; AUDIO / VIDEO: RADIO RECEIVER: REMOVAL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR