Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM1000000027I1F
Model Year Start: 2023 Model: Corolla Hatchback Prod Date Range: [09/2022 -           ]
Title: STEERING COLUMN: STEERING PAD SWITCH (except G16E-GTS): INSPECTION; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV [09/2022 -        ]

INSPECTION

PROCEDURE

1. INSPECT STEERING PAD SWITCH ASSEMBLY (for Type A)

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

*a

Component without harness connected

(Steering Pad Switch Assembly)

*b

Up

*c

Down

*d

Right

*e

Left

*f

OK

*g

Back

*h

On/off Hook

*i

Voice

*j

Volume+

*k

Volume-

*l

Seek+

*m

Seek-

*n

MODE

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 (AU1) - 10 (EAU)

No switch pushed

95 to 105 kΩ

Seek+ switch pushed

Below 2.5 Ω

Seek- switch pushed

313 to 345 Ω

Volume+ switch pushed

950 to 1050 Ω

Volume- switch pushed

2955 to 3265 Ω

9 (AU2) - 10 (EAU)

No switch pushed

95 to 105 kΩ

MODE switch pushed

Below 2.5 Ω

On/off hook switch pushed

950 to 1050 Ω

Voice switch pushed

2955 to 3265 Ω

5 (+DP2) - 10 (EAU)

No switch pushed

95 to 105 kΩ

Left switch pushed

Below 2.5 Ω

Up switch pushed

313 to 345 Ω

Down switch pushed

950 to 1050 Ω

Right switch pushed

2955 to 3265 Ω

4 (+DP) - 10 (EAU)

No switch pushed

95 to 105 kΩ

OK switch pushed

Below 2.5 Ω

Back switch pushed

313 to 345 Ω

HINT:

If the result is not as specified, replace the steering pad switch assembly.

(b) Check the illumination.

(1) Connect a positive (+) lead from the auxiliary battery to terminal 1 (IL+2) and a negative (-) lead to terminal 6 (IL-2) of the steering pad switch assembly connector.

(2) Check that the steering pad switch assembly illumination illuminates.

OK:

The steering pad switch assembly illumination illuminates.

HINT:

If the result is not as specified, replace the steering pad switch assembly.

2. INSPECT STEERING PAD SWITCH ASSEMBLY (for Type B)

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

*A

w/ Lane Departure Alert System

-

-

*a

Component without harness connected

(Steering Pad Switch Assembly)

*b

Up

*c

Down

*d

Right

*e

Left

*f

OK

*g

Back

*h

On/off Hook

*i

Voice

*j

Volume+

*k

Volume-

*l

Seek+

*m

Seek-

*n

MODE

*o

+RES

*p

-SET

*q

Cruise Control Main

*r

CANCEL

*s

Distance Control

*t

Lane Departure Alert

Standard Resistance:

Tester Connection

Condition

Specified Condition

*: w/ Lane Departure Alert System

3 (AU1) - 10 (EAU)

No switch pushed

95 to 105 kΩ

Seek+ switch pushed

Below 2.5 Ω

Seek- switch pushed

313 to 345 Ω

Volume+ switch pushed

950 to 1050 Ω

Volume- switch pushed

2955 to 3265 Ω

9 (AU2) - 10 (EAU)

No switch pushed

95 to 105 kΩ

MODE switch pushed

Below 2.5 Ω

On/off hook switch pushed

950 to 1050 Ω

Voice switch pushed

2955 to 3265 Ω

5 (+DP2) - 10 (EAU)

No switch pushed

95 to 105 kΩ

Left switch pushed

Below 2.5 Ω

Up switch pushed

313 to 345 Ω

Down switch pushed

950 to 1050 Ω

Right switch pushed

2955 to 3265 Ω

4 (+DP) - 10 (EAU)

No switch pushed

95 to 105 kΩ

OK switch pushed

Below 2.5 Ω

Back switch pushed

313 to 345 Ω

8 (DIST) - 12 (ECC)*

No switch pushed

1 MΩ or higher

Distance control switch pushed

Below 2.5 Ω

Lane departure alert switch pushed

228 to 252 Ω

2 (CCS) - 12 (ECC)

No switch pushed

1 MΩ or higher

Cruise control main switch pushed

Below 2.5 Ω

CANCEL switch pushed

228 to 252 Ω

+RES switch pushed

599 to 661 Ω

-SET switch pushed

1463 to 1617 Ω

HINT:

If the result is not as specified, replace the steering pad switch assembly.

(b) Check the illumination.

(1) Connect a positive (+) lead from the auxiliary battery to terminal 1 (IL+2) and a negative (-) lead to terminal 6 (IL-2) of the steering pad switch assembly connector.

(2) Check that the steering pad switch assembly illumination illuminates.

OK:

The steering pad switch assembly illumination illuminates.

HINT:

If the result is not as specified, replace the steering pad switch assembly.

3. INSPECT STEERING PAD SWITCH ASSEMBLY (for Type C)

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

*a

Component without harness connected

(Steering Pad Switch Assembly)

*b

Up

*c

Down

*d

Right

*e

Left

*f

OK

*g

Back

*h

On/off Hook

*i

Voice

*j

Volume+

*k

Volume-

*l

Seek+

*m

Seek-

*n

MODE

*o

+RES

*p

-SET

*q

Cruise Control Main

*r

CANCEL

*s

TSS Mode

*t

Lane Tracing Assist

*u

Distance Control

-

-

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 (AU1) - 10 (EAU)

No switch pushed

95 to 105 kΩ

Seek+ switch pushed

Below 2.5 Ω

Seek- switch pushed

313 to 345 Ω

Volume+ switch pushed

950 to 1050 Ω

Volume- switch pushed

2955 to 3265 Ω

9 (AU2) - 10 (EAU)

No switch pushed

95 to 105 kΩ

MODE switch pushed

Below 2.5 Ω

On/off hook switch pushed

950 to 1050 Ω

Voice switch pushed

2955 to 3265 Ω

5 (+DP2) - 10 (EAU)

No switch pushed

95 to 105 kΩ

Left switch pushed

Below 2.5 Ω

Up switch pushed

313 to 345 Ω

Down switch pushed

950 to 1050 Ω

Right switch pushed

2955 to 3265 Ω

4 (+DP) - 10 (EAU)

No switch pushed

95 to 105 kΩ

OK switch pushed

Below 2.5 Ω

Back switch pushed

313 to 345 Ω

8 (DIST) - 12 (ECC)

No switch pushed

1 MΩ or higher

TSS mode switch pushed

Below 2.5 Ω

Lane tracing assist switch pushed

114 to 126 Ω

Distance control switch pushed

485 to 536 Ω

2 (CCS) - 12 (ECC)

No switch pushed

1 MΩ or higher

Cruise control main switch pushed

Below 2.5 Ω

CANCEL switch pushed

228 to 252 Ω

+RES switch pushed

599 to 661 Ω

-SET switch pushed

1463 to 1617 Ω

HINT:

If the result is not as specified, replace the steering pad switch assembly.

(b) Check the illumination.

(1) Connect a positive (+) lead from the auxiliary battery to terminal 1 (IL+2) and a negative (-) lead to terminal 6 (IL-2) of the steering pad switch assembly connector.

(2) Check that the steering pad switch assembly illumination illuminates.

OK:

The steering pad switch assembly illumination illuminates.

HINT:

If the result is not as specified, replace the steering pad switch assembly.