Inspection Procedure

1. Using the Techstream, read the Data List.
   Fig 1: Identifying Read Value Techstream (Cruise Control Main Switch)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Cruise Control 

   DATA LIST - CRUISE CONTROL
   
   

   Tester Display	Measurement Item/Range	Normal Condition
   CCS Main SW M-CPU	Cruise control main switch (Main CPU) / ON or OFF	ON: Cruise control main switch (Main CPU) on OFF: Cruise control main switch (Main CPU) off
   Cancel Switch	CANCEL switch signal / ON or OFF	ON: CANCEL switch on OFF: CANCEL switch off
   SET/COAST Switch	-SET switch signal / ON or OFF	ON: -SET switch on OFF: -SET switch off
   RES/ACC Switch	+RES switch signal / ON or OFF	ON: +RES switch on OFF: +RES switch off
   CCS Main SW S-CPU	Cruise control main switch (Sub CPU)/ON or OFF	ON: Cruise control main switch (Sub CPU) on OFF: Cruise control main switch (Sub CPU) off

   OK: The Techstream display changes according to operation of cruise control main switch. 

NG: Go to step 2 

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

Fig 2: Inspecting Cruise Control Main Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the cruise control main switch (See REMOVAL  ).
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Switch Condition	Specified Condition
   1 - 3	Neutral	10 kΩ or higher
   	Pushed to +RES	216 to 264 Ω
   	Pushed to -SET	567 to 693 Ω
   	Pushed to CANCEL	1386 to 1694 Ω
   	Main switch pushed off	10 kΩ or higher
   	Main switch pushed on	Below 1 Ω

NG: REPLACE CRUISE CONTROL MAIN SWITCH  (See REMOVAL  )

OK: Go to Next Step 

1. Remove the cruise control switch wire.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   z36-3 - 3	Always	Below 1 Ω
   z36-4 - 1

   Fig 3: Identifying Cruise Control Switch Wire

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE CRUISE CONTROL SWITCH WIRE 

OK: Go to Next Step 

1. If there are any defects as follows, replace the spiral cable with a new one: scratches, cracks, dents or chips on the connector or the spiral cable.
2. Check spiral cable.
   1. Set the spiral cable to the center position (See SPIRAL CABLE ).
   2. After setting the spiral cable to the center position, rotate the spiral cable 2.5 times clockwise, and measure the resistance according to the value(s) in the table below. Then rotate the spiral cable 5 times counterclockwise, and measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      RESISTANCE SPECIFICATION
      
      

      Tester Connection	Condition	Specified Condition
      Z36-3 - E12-1 (CCS)	Always	Below 1 Ω
      Z36-4 - E12-2 (ECC)

   3. After setting the spiral cable to the center position, rotate the spiral cable 2.5 times clockwise. Then while rotating the spiral cable 5 times counterclockwise, measure the resistance according to the value(s) in the table below.
      NOTE: As the spiral cable may break, do not rotate the spiral cable more than the specified amount.

      Standard Resistance 

      RESISTANCE SPECIFICATION
      
      

      Tester Connection	Condition	Specified Condition
      Z36-3 - E12-1 (CCS)	Always	Below 1 Ω
      Z36-4 - E12-2 (ECC)

      Fig 4: Identifying Z36 And E12 Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE SPIRAL CABLE  (See SPIRAL CABLE )

OK: Go to Next Step 

1. Disconnect the E12 spiral cable connector.
2. Disconnect the A38 ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   E12-1 (CCS) - A38-45 (CCS)	Always	Below 1 Ω
   E12-1 (CCS) - Body ground	Always	10 kΩ or higher
   E12-2 (ECC) - Body ground	Always	Below 1 Ω

   Fig 5: Identifying E12 And A38 ECM Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE ECM  (See REMOVAL )