Inspection Procedure

1. Remove the steering pad switch assembly.
   Fig 1: Checking Continuity Between Terminal 2 (DIST) And 4 (ECC) Of Steering Pad Switch Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the continuity between terminal 2 (DIST) and 4 (ECC) of steering pad switch assembly connector when distance control switch is operated.

   Standard: 

   STEERING PAD SWITCH ASSEMBLY INSPECTING STANDARD
   
   

   Switch position	Specified condition
   Distance control switch is ON	Below 1 Ω
   Distance control switch is OFF	10 kΩ or higher

HINT:

When a malfunction is found on the distance control switch, replace the steering pad switch assembly.

1. NG : REPLACE STEERING PAD SWITCH ASSEMBLY 
2. OK : Go to next step. 

1. Check for an open or short circuit in harness and connector between the distance control ECU and the steering pad switch assembly.

1. NG : REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR 
2. OK : Go to next step. 

1. Check for an open or short circuit in harness and connector between the steering pad switch assembly and body ground.

1. NG : REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR 
2. OK : Go to next step. 

1. Remove the distance control ECU with connector.
2. Ignition switch ON.
3. Measure the voltage between terminal MODE (D2-16) of the distance control ECU and body ground, when distance control switch is operated.

   Standard: 

   INSPECTION STANDARD
   
   

   Switch position	Voltage
   Distance control switch is ON	Below 1 V
   Distance control switch is OFF	10 to 14 V

   Fig 2: Measuring Voltage Between Terminal MODE (D2-16) Of Distance Control ECU And Body Ground

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG : REPLACE DISTANCE CONTROL ECU ASSEMBLY, see  REPLACEMENT  . 
2. OK : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON  PROBLEM SYMPTOMS TABLE  .