Inspection Procedure

READ VALUE OF INTELLIGENT TESTER

Connect the intelligent tester to the DLC3.
Turn the ignition switch ON and turn the intelligent tester main switch on.

Check the DATA LIST for proper functioning of the cruise control main switch.

Fig 1: Identifying Cruise Control Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

ECM (Cruise Control System)

DATA LIST - ECM (CRUISE CONTROL SYSTEM)

Item	Measurement Item/Display (Range)	Normal Condition	Diagnostic Note
MAIN SW (MAIN)	Main switch (Main CPU) / ON or OFF	ON: Main switch (Main CPU) Is ON OFF: Main switch (Main CPU) Is OFF	-
MAIN SW (SUB)	Main switch (Sub CPU) / ON or OFF	ON: Main switch (Sub CPU) Is ON OFF: Main switch (Sub CPU) is OFF	-
CANCEL SW	CANCEL switch / ON or OFF	ON: CANCEL switch Is ON OFF: CANCEL switch Is OFF	-
SET/COAST SW	- / SET switch / ON or OFF	ON:-/SET switch Is ON OFF: - / SET switch is OFF	-
RES/ACC SW	+ / RES switch / ON or OFF	ON: +/ RES switch is ON OFF: + / RES switch is OFF	-

OK:

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

Result:

RESULT REFERENCE TABLE

Result	Proceed to
OK	A
NG (All Items are defective)	B
NG (1 to 5 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

Remove the cruise control main switch.

Fig 2: Identifying Cruise Control Main Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance.

Standard resistance

CRUISE CONTROL MAIN SWITCH

Tester Connection	Switch Condition	Specified Condition
1 - 3	cruise control switch neutral	10 kΩ or higher
	cruise control switch ON	Below 1 Ω
	cruise control switch OFF	10 kΩ or higher
	+/RES	216 to 264 Ω
	-/SET	567 to 693 Ω
	CANCEL	1,386 to 1,694 Ω

Reinstall the cruise control main switch.

NG: REPLACE CRUISE CONTROL MAIN SWITCH

OK: GO TO NEXT STEP

CHECK HARNESS AND CONNECTOR (CRUISE CONTROL MAIN SWITCH - SPIRAL CABLE)

Disconnect the spiral cable side connector.
Disconnect the cruise control main switch side connector.

Measure the resistance.

Standard resistance

CRUISE CONTROL MAIN SWITCH - SPIRAL CABLE

Tester Connection	Specified Condition
Terminal 1 (ECC) main switch side - Terminal 4 (ECC) spiral cable side	Below 1 Ω
Terminal 3 (CCS) main switch side - Terminal 5 (CCS) spiral cable side	Below 1 Ω

Fig 3: Identifying Cruise Control Main Switch Side Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Reconnect the spiral cable side connector.
Reconnect the cruise control main switch side connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: GO TO NEXT STEP

CHECK 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 page shown in the brackets. (See REMOVAL )

Remove the spiral cable.

Measure the resistance.

Standard resistance

SPIRAL CABLE

Tester Connection	Specified Condition
Terminal 5 (CCS) main switch side - CCS (E17-5)	Below 1 Ω
Terminal 4 (ECC) main switch side - ECC (E17-4)	Below 1 Ω

Fig 4: Identifying Spiral Cable

HINT:

The spiral cable makes a maximum of approximately 5 rotations.

Reinstall the spiral cable.

NG: REPLACE SPIRAL CABLE

OK: GO TO NEXT STEP

CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - ECM AND BODY GROUND)

Disconnect the E46 ECM connector.

Fig 5: Identifying E17 Spiral Cable Connector Terminals & E46 ECM Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Disconnect the E17 spiral cable (vehicle side) connector.

Measure the resistance.

Standard resistance

SPIRAL CABLE - ECM AND BODY GROUND

Tester Connection	Specified Condition
E46-2 (CCS) - E17-5 (CCS)	Below 1 Ω
E46-2 (CCS) or E17-5 (CCS) - Body ground	10 kΩ or higher
E17-4 (ECC) - Body ground	Below 1 Ω

Reconnect the ECM connector.
Reconnect the spiral cable (vehicle side) connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE ECM