Toyota Yaris: Stop And Start System / Stop and Start Cancel Switch Circuit

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Engine & Hybrid System / Stop And Start / Stop And Start System / Stop and Start Cancel Switch Circuit

DESCRIPTION

Stop and start control can be disabled by pressing the stop and start system cancel switch (combination switch assembly). The stop and start system cancel switch (combination switch assembly) is a momentary-type switch that switches between on and off when the switch is pressed. While stop and start control is disabled, the stop and start cancel indicator is illuminated to inform the driver.

WIRING DIAGRAM

PROCEDURE

1.

READ VALUE USING GTS (STOP&START CANCEL SWITCH)

Powertrain > Stop and Start > Data List

Tester Display

Stop&Start Cancel Switch

(a) Read the value when the stop and start system cancel switch (combination switch assembly) is pressed.

OK:

GTS Display

Condition

Normal Condition

Stop&Start Cancel Switch

Stop and start system cancel switch (combination switch assembly) is pressed

ON

Stop and start system cancel switch (combination switch assembly) is not pressed

OFF

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

INSPECT STOP AND START SYSTEM CANCEL SWITCH (COMBINATION SWITCH ASSEMBLY)

Click here

NG

REPLACE STOP AND START SYSTEM CANCEL SWITCH (COMBINATION SWITCH ASSEMBLY)

OK

3.

CHECK HARNESS AND CONNECTOR (STOP AND START SYSTEM CANCEL SWITCH (COMBINATION SWITCH ASSEMBLY) - BODY GROUND)

(a) Disconnect the H18 stop and start system cancel switch (combination switch assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

H18-5 (E) - Body ground

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - STOP AND START SYSTEM CANCEL SWITCH (COMBINATION SWITCH ASSEMBLY))

(a) Disconnect the H43 engine stop and start ECU connector.

(b) Disconnect the H18 stop and start system cancel switch (combination switch assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

H43-5 (ECAN) - H18-6 (ECU)

Always

Below 1 Ω

H43-5 (ECAN) - Body ground and other terminals

Always

10 kΩ or higher

H18-6 (ECU) - Body ground and other terminals

Always

10 kΩ or higher

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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