Inspection Procedure

1. Choose the diagnosis method.
   DIAGNOSIS METHOD REFERENCE
   
   

   Method	Proceed to
   Using intelligent tester	A
   Not using intelligent tester	B

B:Go to step  3

A: Go to next step 

1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch to the ON position.
   Fig 1: Turning Ignition Switch To ON Position

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. According to the display on the tester, read the "DATA LIST".

   ECM (Cruise Control) 

   DATA LIST - ECM (CRUISE CONTROL)
   
   

   Item	Measurement Item/Range	Normal Condition	Diagnostic Note
   MAIN SW (MAIN)	Main SW signal (Main CPU) ON or OFF	ON: Main SW ON (Pushed on) OFF: Main SW OFF (Pushed off)	-
   CANCEL SW	CANCEL SW signal ON or OFF	ON: CANCEL SW ON OFF: CANCEL SW OFF	-
   SET/COAST SW	SET/- SW signal ON or OFF	ON: SET/- SW ON OFF: SET/- SW OFF	-
   RES/ACCSW	RES/+ SW signal ON or OFF	ON: RES/+ SW ON OFF: RES/+ SW OFF	-

   OK: 

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

   Result 

   DTC RESULT REFERENCE
   
   

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

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

C: REPLACE CRUISE CONTROL MAIN SWITCH ASSEMBLY 

B: Go to next step 

1. Disconnect the cruise control main switch connector.
   Fig 2: Identifying Cruise Control Main Switch Connector

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

   Standard resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Switch Condition	Specified Condition
   A-1 (ECC) - A-3 (CSS)	Main Switch OFF *1	1M or higher
   	Main Switch ON	Below 2.5
   	+ (ACCEL)/RES	235 to 245
   	-(COAST)/SET	617 to 643
   	CANCEL	1509 to 1571

NG: REPLACE CRUISE CONTROL MAIN SWITCH ASSEMBLY 

OK: go to next step 

1. Disconnect the e1 connector from the spiral cable.
2. Measure the resistance according to the values in the table below.

NG: REPLACE STEERING PAD SWITCH LH 

1. Disconnect the S7 spiral cable connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Condition	Specified Condition
   A-4 - S7-4	Always	Below 1 Ω
   A-5 - S7-5	Always	Below 1 Ω

   Fig 3: Identifying Spiral Cable Sub-Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE SPIRAL CABLE SUB-ASSEMBLY 

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 REFERENCE
   
   

   Tester Connection	Connection	Specified Condition
   S7-5 - E5-31 (CCS)	Always	Below 1 Ω
   E5-31 (CCS) - Body ground	Always	10 kΩ or higher
   S7-4 - Body ground	Always	Below 1 Ω

Fig 4: Checking Wire Harness (Spiral Cable - ECM And Body Ground)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

OK: REPAIR OR REPLACE HARNESS AND CONNECTOR