Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to the ON position.
3. Turn the Techstream main switch on.
4. Enter the following menu items: Powertrain / Cruise Control / Data List.
5. Check the DATA LIST for proper functioning of the cruise control main switch.
   Fig 1: Identifying Cruise Control Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   ECM (Cruise control): 

   ECM (CRUISE CONTROL)
   
   

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

   OK: 

   When the cruise control main switch is operated, the display changes as shown above. 

   Result 

   DTC RESULT REFERENCE CHART
   
   

   Result	Proceed to
   OK	A
   NG (All items are defective)	B
   NG (1 to 4 items are defective)	C

B: Go to step 2 

C: REPLACE CRUISE CONTROL MAIN SWITCH 

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

1. Remove the cruise control main switch (See REMOVAL  ).
2. Measure the resistance according to the value(s) in the table below.
   Fig 2: Identifying Cruise Control Main Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance 

   CRUISE CONTROL MAIN SWITCH
   
   

   Tester Connection	Switch Condition	Specified Condition
   A-1 (CCS)-A-3 (ECC)	Neutral	10 kΩ or higher
   A-1 (CCS) - A-3 (ECC)	+ (ACCEL)/RES (RESUME)	216 to 264 Ω
   A-1 (CCS) - A-3 (ECC)	- (COAST)/SET	567 to 693 Ω
   A-1 (CCS) - A-3 (ECC)	CANCEL	1,386 to 1,694 Ω
   A-1 (CCS) - A-3 (ECC)	Main Switch on	Below 1 Ω

NG: REPLACE CRUISE CONTROL MAIN SWITCH 

OK: Go to next step 

1. Disconnect the b1 connector from the spiral cable.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   CRUISE CONTROL MAIN SWITCH - SPIRAL CABLE
   
   

   Tester connection	Specified condition
   A-1 - b1-3	Below 1 Ω
   A-3 - b1-4	Below 1 Ω

   Fig 3: Checking Harness And Connector (Cruise Control main Switch - Spiral Cable)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

HINT:

• See REMOVAL
• See INSTALLATION

1. Remove the spiral cable.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   SPIRAL CABLE RESISTANCE REFERENCE CHART
   
   

   Tester Connection	Spiral Cable Position	Specified Condition
   b1-3 - C10-1 (CCS)	Center	Below 1 Ω
   	2.5 rotations to the left
   	2.5 rotations to the right
   b1-4 - C10-2 (ECC)	Center	Below 1 Ω
   	2.5 rotations to the left
   	2.5 rotations to the right

   Fig 4: Checking Spiral Cable

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   The spiral cable makes a maximum of approximately 5 rotations.

NG: REPLACE SPIRAL CABLE 

OK: Go to next step 

1. Measure the resistance according to the value(s) in the table below.
   Fig 5: Identifying Spiral Cable Side Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance: 

   3MZ-FE 

   SPIRAL CABLE - ECM AND BODY GROUND (3MZ-FE)
   
   

   Tester Connection	Condition	Specified Condition
   C10-1 (CCS) - E5-2 (CCS)	Always	Below 1 Ω
   E5-2 (CCS) - Body ground	Always	10 kΩ or higher
   C10-2 (ECC) - Body ground	Always	Below 1 Ω

   2AZ-FE 

   SPIRAL CABLE - ECM AND BODY GROUND (2AZ-FE)
   
   

   Tester Connection	Condition	Specified Condition
   C10-1 (CCS) - E5-31 (CCS)	Always	Below 1 Ω
   E5-31 (CCS) - Body ground	Always	10 kΩ or higher
   C10-2 (ECC) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE ECM