Inspection Procedure

1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch to the ON position and turn the intelligent tester main switch on.
3. 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

   ECM (Cruise control): 

   DATA LIST - ECM (CRUISE CONTROL)
   
   

   Tester Display	Measurement Item/Range	Normal Condition
   MAIN SW (MAIN)	Main switch signal (Main CPU)/ ON or OFF	ON: Main switch on OFF: Main switch off
   CANCEL SW	CANCEL switch signal/ON or OFF	ON: CANCEL switch on OFF: CANCEL switch off
   SET/COAST SW	SET/COAST switch signal/ON or OFF	ON: - (COAST)/SET switch on OFF: - (COAST)/SET switch off
   RES/ACC SW	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

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

C: REPLACE CRUISE CONTROL MAIN SWITCH  (See REMOVAL  )

B: Go to Next Step 

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   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 REMOVAL  )

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 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   A-3 - b1-5	Always	Below 1 Ω
   A-1 - b1-4	Always	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:

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

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

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Spiral Cable Position	Specified Condition
   b1-5 (CCS) - C13-5 (CCS)	Center	Below 1 Ω
   	2.5 rotations to the left
   	2.5 rotations to the right
   b1-4 (ECC) - C13-4 (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.

Fig 4: Inspecting Spiral Cable Assembly
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE SPIRAL CABLE  (See REMOVAL )

OK: Go to Next Step 

1. Disconnect the E5 connector from the ECM.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   C13-5 (CCS) - E5-2 (CCS)	Always	Below 1 Ω
   E5-2 (CCS) - Body ground	Always	10 kΩ or higher
   C13-4 (ECC) - Body ground	Always	Below 1 Ω

Fig 5: Identifying E5 ECM Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE ECM  (See REMOVAL )