Inspection Procedure

1. Check the DATA LIST for proper functioning of the cruise control main switch.
   1. Intelligent tester

      CCS 

      INTELLIGENT TESTER - CCS
      
      

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      MAIN SW (MAIN)	Cruise control switch signal (Main CPU)/ON or OFF	ON: Cruise control switch is ON OFF: Cruise control switch is OFF	-
      CANCEL SW	Cancel switch signal / ON or OFF	ON: CANCEL switch is ON OFF: CANCEL switch is OFF	-
      SET/COAT SW	-/SET switch signal / ON or OFF	ON: -/SET switch is ON OFF: -/SET switch is OFF	-
      RES/ACC SW	+/RES switch signal / ON or OFF	ON: +/RES switch is ON OFF: +/RES switch is OFF	-

   2. Techstream

      Cruise Control 

      TECHSTREAM - CRUISE CONTROL
      
      

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      CCS Main SW M-CPU	Cruise control switch signal (Main CPU) / ON or OFF	ON: Cruise control switch is ON OFF: Cruise control switch is OFF	-
      Cancel Switch	Cancel switch signal / ON or OFF	ON: CANCEL switch is ON OFF: CANCEL switch is OFF	-
      SET/COAT Switch	-/SET switch signal / ON or OFF	ON: -/SET switch is ON OFF: -/SET switch is OFF	-
      RES/ACC Switch	+/RES switch signal / ON or OFF	ON: +/RES switch is ON OFF: +/RES switch is OFF	-

      OK: When cruise control main switch operation is performed, the results are the same as above. 

NG: Go to step 2 

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

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

   Standard resistance 

   CRUISE CONTROL SWITCH
   
   

   Tester Connection	Switch Condition	Specified Condition
   1 -3	Cruise control switch ON	Below 1 Ω
   1 -3	Cruise control switch OFF	10 kΩ or higher
   1 -3	+/RES switch hold ON	235 to 245 Ω
   1 -3	-/SET switch hold ON	620 to 640 Ω
   1 -3	CANCEL switch hold ON	1510 to 1570 Ω

   Fig 1: Inspecting Cruise Control Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE CRUISE CONTROL SWITCH (See  CRUISE CONTROL MAIN SWITCH   ) 

OK: GO TO NEXT STEP 

1. Disconnect the z2 cruise control switch wire connector.
2. Disconnect the L24 cable connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   SPIRAL CABLE SUB-ASSEMBLY
   
   

   Tester Connection	Condition	Specified Condition
   z2-3 - L24-1 (CCS)	Always	Below 3 Ω
   z2-4 - L24-2 (ECC)	Always	Below 3 Ω
   z2-3 - Body ground	Always	10 kΩ or higher
   z2-4 - Body ground	Always	10 kΩ or higher

   Fig 2: Identifying Z2 Cruise Control Switch Wire And L24 Cable Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE SPIRAL CABLE SUB-ASSEMBLY  (See REMOVAL )

OK: GO TO NEXT STEP 

1. Disconnect the z2 spiral cable connector.
2. Disconnect the A cruise control switch connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   CRUISE CONTROL SWITCH WIRE
   
   

   Tester Connection	Condition	Specified Condition
   Z2-3 - A-3	Always	Below 1 Ω
   Z2-4 - A-1	Always	Below 1 Ω
   A-3 - Body ground	Always	10 kΩ or higher
   A-1 - Body ground	Always	10 kΩ or higher

   Fig 3: Inspecting Cruise Control Switch Wire

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE CRUISE CONTROL SWITCH WIRE 

OK: REPLACE ECM  (See REMOVAL )

1. Disconnect the L24 cable connector.
2. Disconnect the A13 ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   SPIRAL CABLE - ECM AND BODY GROUND
   
   

   Tester Connection	Condition	Specified Condition
   L24-1 (CCS) - A13-15 (CCS)	Always	Below 1 Ω
   L24-2 (ECC) - Body ground	Always	Below 1 Ω
   L24-1 (CCS) - Body ground	Always	10 kΩ or higher

   Fig 4: Identifying L24 Cable And A13 ECM Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE ECM  (See REMOVAL )