Inspection Procedure

1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch on (IG), and turn the intelligent tester main switch on.
3. According to the display on the tester, read the "DATA LIST".

   CC (ECM): 

   DATA LIST
   
   

   Item	Measurement Item / Display (Range)	Normal Condition	Diagnostic Note
   DISTANCE TIME	Car distance time setting condition / SHRT, MID, LONG, NO	Distance selected by distance control switch	-

   OK: 

   Distance selected by the distance control switch is shown on the display. 

NG: Go to step 2 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

1. Remove the steering pad switch assembly.
2. Measure the resistance between terminals 4 (DIST) and 6 (ECC) of the steering pad switch assembly connector when the distance control switch is operated.
   Fig 1: Identifying Distance Control Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance 

   SWITCH POSITION SPECIFIED VALUE CHART
   
   

   Switch position	Specified value
   Distance control switch is ON	Below 2.5 Ω
   Distance control switch is OFF	100 kΩ or higher

   HINT:

   When a malfunction is detected in the distance control switch, replace the steering pad switch assembly.

NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

OK: Go to Next Step 

1. Disconnect the spiral cable connector.
   Fig 2: Identifying Terminals Of D15 Spiral Cable Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance between terminals A and C13 of the spiral cable.

   Standard resistance 

   TERMINALS RESISTANCE CHART
   
   

   Tester No.	Specified value
   A-4 - D15-11	Below 1 Ω
   A-6 - D15-2	Below 1 Ω

NG: REPLACE STEERING PAD SWITCH ASSEMBLY 

OK: Go to Next Step 

1. Disconnect the distance control ECU connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   D15-11 - A20-16 (MODE)	Always	Below 1 Ω
   A20-16 (MODE) - Body ground	Always	10 kΩ or higher

NG: REPLACE SPIRAL CABLE 

Fig 3: Disconnecting Distance Control ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

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

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   D15-2 - Body ground	Always	Below 1 Ω

NG: REPLACE SPIRAL CABLE 

Fig 4: Identifying Terminals Of D15 Spiral Cable Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Remove the distance control ECU (cruise control ECU) with the connector.
2. Turn the ignition switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   A20-16 (MODE) - Body ground	Distance control switch ON	0 to 2 V
   A20-16 (MODE) - Body ground	Distance control switch OFF	9 to 16 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 5: Identifying Terminals Of Distance Control ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE