Distance Control Switch Circuit [11/2023 - ]: Procedure

1. Read the Data List according to the display on the GTS.

   Powertrain > Radar Cruise 2 > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Vehicle-to-vehicle Distance Control Switch	Vehicle-to-vehicle distance control switch signal	OFF or ON	OFF: Vehicle-to-vehicle distance control switch not pushed ON: Vehicle-to-vehicle distance control switch pushed	-

   Powertrain > Radar Cruise 2 > Data List 

   Tester Display
   Vehicle-to-vehicle Distance Control Switch

   OK

   The value of the Data List item changes according to the operation of the vehicle-to-vehicle distance control switch.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [11/2023 - ] 

Result: 

NG 

See step  2

1. Remove the steering pad switch assembly.

   Refer to REMOVAL [11/2023 - ]

2. Inspect the steering pad switch assembly.

   Refer to INSPECTION [12/2019 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE STEERING PAD SWITCH ASSEMBLY. Refer to  REMOVAL [11/2023 - ] 

Result: 

OK 

See step  3

1. Remove the spiral cable sub-assembly.

   Refer to REMOVAL [11/2023 - ]

2. Inspect the spiral cable sub-assembly.

   Refer to INSPECTION [12/2019 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  REMOVAL [11/2023 - ] 

Result: 

OK 

See step  4

1. Disconnect the R5 forward recognition camera connector.
2. Disconnect the A83 ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H24-6 (DIST) - R5-3 (LKSW)	Always	Below 1 Ω
   H24-2 (ECC) - A83-47 (EPPM)	Always	Below 1 Ω
   A83-9 (E1) - Body ground	Always	Below 1 Ω
   H24-6 (DIST) or R5-3 (LKSW) - Body ground	Always	10 kΩ or higher
   H24-2 (ECC) or A83-47 (EPPM) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A83-47 (EPPM) - A83-9 (E1)	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [11/2023 - ] 

Result: 

NG 

REPLACE ECM. Refer to  REMOVAL [11/2023 - ]