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.

   ECM (Cruise control): 

   ECM REFERENCE CHART
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   MAIN SW (MAIN)	Main switch signal (Main CPU)/ ON or OFF	ON: Cruise control main switch on OFF: Cruise control main switch off	-
   CANCEL SW	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	-
   MAIN SW (SUB)	Main switch signal (Sub CPU) / ON or OFF	ON: Cruise control main switch ON OFF: Cruise control main switch OFF	-

   Fig 1: Checking Cruise Control Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   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: Inspecting Cruise Control Main Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance 

   RESISTANCE REFERENCE CHART
   
   

   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 

   RESISTANCE REFERENCE CHART
   
   

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

   Fig 3: Measuring Resistance Value

   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 

   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

   HINT:

   The spiral cable makes a maximum of approximately 5 rotations.

   Fig 4: Checking Spiral Cable

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 

   RESISTANCE REFERENCE CHART
   
   

   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 

   RESISTANCE REFERENCE CHART
   
   

   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