Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Cruise Control / Data List.
5. Check the Data List for proper functioning of the cruise control main switch.
   Fig 1: Identifying Cruise Control Main Switch Function Position

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Hybrid Vehicle Control ECU (Cruise Control): 

   DATA LIST
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   CCS Main SW M-CPU	Main switch signal (Main CPU)/ ON or OFF	ON: Main switch on OFF: Main switch off	-
   Cancel Switch	CANCEL switch signal/ON or OFF	ON: CANCEL switch on OFF: CANCEL switch off	-
   SET/COAST Switch	SET/COAST switch signal/ON or OFF	ON: - (COAST)/SET switch on OFF: - (COAST)/SET switch off	-
   RES/ACC Switch	RES/ACC 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 

   RESULT CHART
   
   

   Result	Proceed to
   OK	A
   NG (All items are defective)	B
   NG (1 to 3 items are defective)	C

B: Go to step 2 

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

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

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Switch Condition	Specified Condition
   A-3 (CCS) - A-1 (ECC)	Neutral	10 kΩ or higher
   A-3 (CCS) - A-1 (ECC)	+ (ACCEL)/RES (RESUME)	216 to 264 Ω
   A-3 (CCS) - A-1 (ECC)	- (COAST)/SET	567 to 693 Ω
   A-3 (CCS) - A-1 (ECC)	CANCEL	1386 to 1694 Ω
   A-3 (CCS) - A-1 (ECC)	Main switch on	Below 1 Ω

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

OK: Go to Next Step 

1. Disconnect the z1 connector from the spiral cable.
   Fig 3: Identifying Z1 Connector Of Spiral Cable

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   A-3-Z1-3	Always	Below 1 Ω
   A-1-Z1-4	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

HINT:

• Removal (See REMOVAL )
• Installation (See INSTALLATION )

1. Remove the spiral cable.
   Fig 4: Identifying Spiral Cable Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Spiral Cable Position	Specified Condition
   z1-3 (CCS) - D16-1 (CCS)	Center	Below 1 Ω
   	2.5 rotations to the left
   	2.5 rotations to the right
   z1-4 (ECC) - D16-2 (ECC)	Center	Below 1 Ω
   	2.5 rotations to the left
   	2.5 rotations to the right

   HINT:

   The spiral cable makes a maximum of approximately 5 rotations.

NG: REPLACE SPIRAL CABLE  (See SPIRAL CABLE )

OK: Go to Next Step 

1. Disconnect the D35 connector from the hybrid vehicle control ECU.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   D16-1 (CCS) - D35-26 (CCS)	Always	Below 1 Ω
   D35-26 (CCS) - Body ground	Always	10 kΩ or higher
   D16-2 (ECC) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 5: Identifying Spiral Cable And Hybrid Vehicle Control ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE HYBRID VEHICLE CONTROL ECU  (See REMOVAL )