Cruise Control System (For Hatchback) Cruise Control Switch Circuit

Engine Hybrid System. Yaris. Ncp93, 131
Cruise Control. Yaris. Ncp93, 131

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING TECHSTREAM (CRUISE CONTROL MAIN SWITCH)

INSPECT CRUISE CONTROL MAIN SWITCH

INSPECT CRUISE CONTROL SWITCH WIRE

INSPECT SPIRAL CABLE SUB-ASSEMBLY

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

CRUISE CONTROL SYSTEM (for Hatchback) - Cruise Control Switch Circuit


DESCRIPTION

This circuit sends a signal to the ECM depending on the cruise control main switch condition. The battery supplies positive (+) battery voltage to the cruise control main switch. Terminal 60 (CCS) of the ECM receives the voltage which varies according to the switch condition.

WIRING DIAGRAM


Yaris. Ncp93, 131.Cruise Control.Cruise Control System (For Sedan).Cruise Control System (For Hatchback) Cruise Control Switch Circuit


INSPECTION PROCEDURE

1.READ VALUE USING TECHSTREAM (CRUISE CONTROL MAIN SWITCH)

  1. Using the Techstream, read the Data List (YARIS_NCP93 RM0000044B200NX.html).

    Cruise Control
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Main SW M-CPU
    		Cruise control main switch (Main CPU) / OFF or ON
    		OFF: Cruise control main switch off
    ON: Cruise control main switch on
    		-
    Cancel Switch
    		CANCEL switch signal / OFF or ON
    		OFF: CANCEL switch off
    ON: CANCEL switch on
    		-
    SET/COAST Switch
    		-SET switch signal / OFF or ON
    		OFF: -SET switch off
    ON: -SET switch on
    		-
    RES/ACC Switch
    		+RES switch signal / OFF or ON
    		OFF: +RES switch off
    ON: +RES switch on
    		-
    OK:
    The display is as specified in the normal condition column.


NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (YARIS_NCP93 RM0000044AR00PX.html)

2.INSPECT CRUISE CONTROL MAIN SWITCH

  1. Inspect the cruise control main switch (YARIS_NCP93 RM000001Z6E041X.html).



NG
REPLACE CRUISE CONTROL MAIN SWITCH (YARIS_NCP93 RM000000VQ306DX.html)
OK


3.INSPECT CRUISE CONTROL SWITCH WIRE


    Yaris. Ncp93, 131.Cruise Control.Cruise Control System (For Sedan).Cruise Control System (For Hatchback) Cruise Control Switch Circuit

  1. Remove the cruise control switch wire.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    V13-3 (CCS) - 3 (CCS)
    		Always
    		Below 1 Ω
    V13-4 (ECC) - 1 (ECC)
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Spiral Cable Sub-assembly)
    *b
    		Front view of wire harness connector
    (to Cruise Control Switch)


NG
REPLACE CRUISE CONTROL SWITCH WIRE
OK


4.INSPECT SPIRAL CABLE SUB-ASSEMBLY

  1. Inspect the spiral cable sub-assembly (YARIS_NCP93 RM000000UWB07GX.html).



NG
REPLACE SPIRAL CABLE SUB-ASSEMBLY (YARIS_NCP93 RM000000V6R02BX.html)
OK


5.CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - ECM AND BODY GROUND)

  1. Disconnect the D103 spiral cable sub-assembly connector.

  1. Disconnect the A72 ECM connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    D103-1 (CCS) - A72-60 (CCS)
    		Always
    		Below 1 Ω
    D103-2 (ECC) - Body ground
    D103-1 (CCS) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (YARIS_NCP93 RM000001CN002IX.html)