Inspection Procedure

1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch on and turn the intelligent tester main switch on.
3. Check the DATA LIST for proper functioning of the cruise control main switch.
   Fig 1: Checking Proper Functioning Of Cruise Control Main Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   ECM (Cruise control): 

   NORMAL CONDITION TABLE
   
   

   Item	Measurement Item/Display (Range)	Normal Condition	Diagnostic Note
   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 TABLE
   
   

   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 

C: REPLACE CRUISE CONTROL MAIN SWITCH 

B: Go to Next Step 

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

   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 REFERENCE TABLE
   
   

   Tester Connection	Switch Condition	Specified Condition
   A-1 (ECC) - A-2 (R/N), A-1 (ECC) - A-3 (CCS)	Neutral	10 kΩ or higher
   A-1 (ECC) - A-3 (CCS)	+ (ACCEL)/RES (RESUME)	216 to 264 Ω
   A-1 (ECC) - A-3 (CCS)	- (COAST)/SET	567 to 693 Ω
   A-1 (ECC) - A-3 (CCS)	CANCEL	1,386 to 1,694 Ω
   A-1 (ECC) - A-3 (CCS)	Main Switch on	Below 1 Ω
   A-1 (ECC) - A-2 (R/N)	Main Switch on and MODE Switch on	Below 1 Ω

NG: REPLACE CRUISE CONTROL MAIN SWITCH 

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 

   TESTER CONNECTION SPECIFIED CONDITION REFERENCE TABLE
   
   

   Tester Condition	Spiral Cable Position	Specified Condition
   m1-1 - C13-7	Center	Below 1 Ω
   	2.5 rotations to the left
   	2.5 rotations to the right
   m1-3 - C13-1	Center	Below 1 Ω
   	2.5 rotations to the left
   	2.5 rotations to the right
   m1-4 - C13-2	Center	Below 1 Ω
   	2.5 rotations to the left
   	2.5 rotations to the right

   Fig 3: Identifying M1 & C13 Connectors Terminals

   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.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION REFERENCE TABLE
   
   

   Tester Connection	Condition	Specified Condition
   C13-1 (CCS) - E6-2 (CCS)	Always	Below 1 Ω
   C13-7 (R/N) - E6-4 (CCHG)	Always	Below 1 Ω
   C13-1 (CCS) - Body ground	Always	10 kΩ or higher
   C13-7 (R/N) - Body ground	Always	10 kΩ or higher

   Fig 4: Identifying C13 & E6 Connectors Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

1. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION REFERENCE TABLE
   
   

   Tester Connection	Condition	Specified Condition
   C13-2 - Body ground	Always	Below 1 Ω

   Fig 5: Identifying C13 ECC Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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