Cruise Control Switch Circuit [08/2013 - ]: Procedure

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Using the Techstream, read the Data List.
   CRUISE CONTROL
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   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 → See step   2 

OK → See step   6 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the cruise control main switch. Refer to REMOVAL [08/2013 - ] .
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   1 - 3	Neutral	1M Ω or higher
   	Pushed to +RES	235 to 245 Ω
   	Pushed to -SET	620 to 640 Ω
   	Pushed to CANCEL	1510 to 1570 Ω
   	Main switch pushed off	1M Ω or higher
   	Main switch pushed on	Below 2.5 Ω

NG → See step   7 

OK: Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

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

NG → REPLACE CRUISE CONTROL SWITCH WIRE 

OK: Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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. Refer to REMOVAL [08/2013 - ] .
   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

      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

      Tester Connection	Condition	Specified Condition
      z36-3 - E12-1 (CCS)	Always	Below 1 Ω
      z36-4 - E12-2 (ECC)

NG → See step   8 

OK: Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   9