Inspection Procedure

READ VALUE USING TECHSTREAM

Connect the Techstream to the DLC3.
Turn the ignition switch to the ON position.
Turn the Techstream on.
Enter the following menus: Powertrain / Cruise Control / Data List.
Check the Data List for proper functioning of the cruise control main switch.

Fig 1: Identifying Cruise Control Main Switch Direction

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Hybrid Vehicle Control ECU (Cruise Control):

DIAGNOSTIC NOTE

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

OK: When cruise control main switch operation is performed the results will be same as 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

C: REPLACE CRUISE CONTROL MAIN SWITCH

B: Go to next step.

INSPECT CRUISE CONTROL MAIN SWITCH

Disconnect the cruise control main switch connector.
Measure the resistance according to the value(s) in the table below.

Fig 2: Identifying Cruise Control Main Switch Direction

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Switch Condition	Specified Condition
1 - 3	Neutral	10 kΩ or higher
1 - 3	+/RES	235 to 245 Ω
1 - 3	-/SET	620 to 640 Ω
1 - 3	CANCEL	1,510 to 1,570 Ω
1 - 3	Main Switch ON	Below 1 Ω

NG: REPLACE CRUISE CONTROL MAIN SWITCH

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 prevent the airbag from deploying. Be sure to read the article 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 CHART

Tester Connection	Spiral Cable Position	Specified Condition
A-3-C13-1 (CCS)	Center	Below 1 Ω
	2.5 rotations to the left
	2.5 rotations to the right
A-4 - C13-2 (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 3: Inspecting Spiral Cable

NG: REPLACE SPIRAL CABLE

OK: Go to next step.

CHECK WIRE HARNESS (SPIRAL CABLE - HYBRID VEHICLE CONTROL ECU AND BODY GROUND)
1. Measure the resistance according to the value(s) in the table below.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

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

Fig 4: Checking Wire Harness (Spiral Cable - Hybrid Vehicle Control ECU And Body Ground)

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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