Inspection Procedure

READ VALUE OF TECHSTREAM

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

Fig 1: Checking Cruise Control Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CCS (ECM): Cruise Control

CCS (ECM) DATA LIST

Item	Measurement Item / Display (Range)	Normal Condition	Diagnostic Note
CCS MAIN SW (M-CPU)	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/COAST SW signal / ON or OFF	ON: - (COAST)/SET SW ON OFF: - (COAST)/SET SW OFF	-
RES/ACC SW	RES/ACC SW signal / ON or OFF	ON: + (ACCEL)/RES SW ON OFF: + (ACCEL)/RES SW OFF	-

OK:

When the cruise control main switch is operated, the normal conditions listed above are shown on the display.

Result

RESULT CHART

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

B: GO TO NEXT STEP

C: REPLACE SPIRAL CABLE

INSPECT CRUISE CONTROL MAIN SWITCH ASSEMBLY

Disconnect the cruise control main switch connector.

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

RESISTANCE SPECIFICATION

Tester connection	Switch position	Specified condition
A-2 - A-3	Neutral	∞ (No continuity)
A-2 - A-3	CRUISE ON-OFF	0 Ω (Continuity)
A-2 - A-3	RES/ACC	210 to 270 Ω
A-2 - A-3	SET/COAST	560 to 700 Ω
A-2 - A-3	CANCEL	1,380 to 1,700 Ω

Fig 2: Inspecting Cruise Control Main Switch Assembly

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : GO TO NEXT STEP

NG: REPLACE CRUISE CONTROL MAIN SWITCH ASSEMBLY

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 refer to the following references for additional information.

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

RESISTANCE SPECIFICATION

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

OK : GO TO NEXT STEP

NG: REPLACE SPIRAL CABLE

CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - ECM)

Disconnect the ECM connector.

Fig 4: Identifying Spiral Cable Harness Connector Terminals (Front View)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Resistance

RESISTANCE SPECIFICATION

Tester connection	Condition	Specified condition
Spiral cable (C13-2) - CCS (E5-24)	Always	Below 1 Ω
CCS (E5-24) - Body ground	Always	10 kΩ or higher
Spiral cable (C13-2) -Body ground	Always	Below 1 Ω

Fig 5: Identifying ECM Connectors E5 And E5-24 Terminals

OK : REPLACE ECM

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR