Inspection Procedure

READ VALUE OF INTELLIGENT TESTER

Connect the intelligent tester to the DLC3.
Turn the ignition switch to the ON position, and turn the intelligent tester main switch on.
Check the DATA LIST for proper functioning of the cruise control main switch.

Fig 1: Inspecting Cruise Control Main Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

LASER CRUISE:

TESTER DISPLAY DIAGNOSTIC CHART

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

OK: When cruise control main switch operation is performed, the result will be same as above.

Result:

RESULT REFERENCE

Result	Proceed to
OK	A
NG (all items are defective)	B
NG (one to four 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

INSPECT CRUISE CONTROL MAIN SWITCH

Disconnect the cruise control main switch connector.

Fig 2: Identifying Terminals Of Cruise Control Main Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Measure the resistance according to the value(s) in the table below.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Switch Condition	Specified Condition
1 - 2,1 - 3	Neutral	10 kΩ or higher
1 - 3	+/RES	235 to 245 Ω
1 - 3	-/SET	620 to 640 Ω
1 - 3	CANCEL	1510 to 1570 Ω
1 - 3	Main Switch ON	Below 1 Ω
1 - 2	MODE	Below 1 Ω

NG: REPLACE CRUISE CONTROL MAIN SWITCH

OK: Go to next step

INSPECT SPIRAL CABLE

NOTE: The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may cause airbag deployment. Be sure to read the page shown in the brackets.

HINT:

Removal (See REMOVAL )
Installation (See INSTALLATION )

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

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

Fig 3: Identifying Terminals Of Spiral Cable

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

CHECK WIRE HARNESS (SPIRAL CABLE - HYBRID VEHICLE CONTROL ECU)

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
C13-1 - H29-26 (CCS)	Always	Below 1 Ω
C13-7 - H29-18 (CCHG)	Always	Below 1 Ω
C13-1 - Body ground	Always	10 kΩ or higher
C13-7 - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 4: Disconnecting H29 Connector From Hybrid Vehicle Control ECU

OK: Go to next step

CHECK WIRE HARNESS (SPIRAL CABLE - BODY GROUND)

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

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

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 5: Identifying Terminals Of Connector C13

OK: REPLACE HYBRID VEHICLE CONTROL ECU