Steering Pad Switch Circuit [12/2024 - ]: Procedure

1. Check the problem symptoms.

   Result

   Result	Proceed to
   All switches cannot be operated	A
   Driving assist switch, +RES switch, - switch, CANCEL switch cannot be operated	B
   Only driving assist switch cannot be operated	C
   Only +RES switch cannot be operated
   Only - switch cannot be operated
   Only CANCEL switch cannot be operated
   Only driving assist mode select switch cannot be operated
   Only vehicle-to-vehicle distance switch cannot be operated
   Only LTA switch cannot be operated
   Driving assist mode select switch, vehicle-to-vehicle distance switch, and LTA switch cannot be operated	D

Result: 

B 

See step  5

Result: 

C 

REPLACE STEERING PAD SWITCH ASSEMBLY 

Refer to REMOVAL [12/2024 - ]

Result: 

D 

See step  8

Result: 

A 

See step  2

Refer to INSPECTION [12/2024 - ]

Result

Result: 

NG 

REPLACE STEERING PAD SWITCH ASSEMBLY 

Refer to REMOVAL [12/2024 - ]

Result: 

OK 

See step  3

Refer to INSPECTION [12/2024 - ]

Result

Result: 

NG 

REPLACE SPIRAL CABLE SUB-ASSEMBLY 

Refer to REMOVAL [12/2024 - ]

Result: 

OK 

See step  4

1. Disconnect the A3 ECM connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K48-2 (ECC) - A3-94 (ECCS)	Always	Below 1 Ω
   K48-2 (ECC) or A3-94 (ECCS) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

Refer to PROBLEM SYMPTOMS TABLE [12/2024 - ]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Refer to INSPECTION [12/2024 - ]

Result

Result: 

NG 

REPLACE STEERING PAD SWITCH ASSEMBLY 

Refer to REMOVAL [12/2024 - ]

Result: 

OK 

See step  6

Refer to INSPECTION [12/2024 - ]

Result

Result: 

NG 

REPLACE SPIRAL CABLE SUB-ASSEMBLY 

Refer to REMOVAL [12/2024 - ]

Result: 

OK 

See step  7

1. Disconnect the A3 ECM connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K48-13 (CCS) - A3-93 (CCS)	Always	Below 1 Ω
   K48-13 (CCS) or A3-93 (CCS) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM 

Refer to REMOVAL [12/2024 - ]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Refer to INSPECTION [12/2024 - ]

Result

Result: 

NG 

REPLACE STEERING PAD SWITCH ASSEMBLY 

Refer to REMOVAL [12/2024 - ]

Result: 

OK 

See step  9

Refer to INSPECTION [12/2024 - ]

Result

Result: 

NG 

REPLACE SPIRAL CABLE SUB-ASSEMBLY 

Refer to REMOVAL [12/2024 - ]

Result: 

OK 

See step  10

1. Disconnect the X2 forward recognition camera connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K48-6 (DIST) - X2-5 (LKSW)	Always	Below 1 Ω
   K48-6 (DIST) or X2-5 (LKSW) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE FORWARD RECOGNITION CAMERA 

Refer to REMOVAL [12/2024 - ]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR