Subaru Legacy BN/BS (2015-2019) Service Manual: Inspection

Subaru Legacy BN/BS (2015-2019) Service Manual / Security and locks / Keyless access with push button start system / Inspection

1. KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM

Refer to “Basic Diagnostic Procedure” of “KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)” section. Basic Diagnostic Procedure

2. PUSH BUTTON START SYSTEM

Ignition/ACC change function check

1. Check push button ignition switch function

(1) Check the change control through push button ignition switch, brake pedal operation, and shift position.

Shift lever position	Brake pedal operation	Push button ignition switch operation
P	Released	Repeat Ignition switch OFF > ACC ON > Ignition switch ON > Ignition switch OFF
P	Released	Engine running > Ignition switch OFF
P	Depressed	Ignition switch OFF > Engine started
P	Depressed	ACC ON > Engine started
P	Depressed	Ignition switch ON > Engine started
P	Depressed	Engine running > Ignition switch OFF
N	Released	Repeat Ignition switch OFF > ACC ON > Ignition switch ON > ACC ON
N	Released	Engine running > ACC ON
N	Depressed	Ignition switch OFF > Engine started
N	Depressed	ACC ON > Engine started
N	Depressed	Ignition switch ON > Engine started
N	Depressed	Engine running > ACC ON
Other than P or N	Released	Repeat Ignition switch OFF > ACC ON > Ignition switch ON > ACC ON
Other than P or N	Released	Engine running > ACC ON
Other than P or N	Depressed	Ignition switch OFF > Ignition switch ON
Other than P or N	Depressed	ACC ON > Ignition switch ON
Other than P or N	Depressed	Engine running > ACC ON

(2) Check the changeover functions other than push button ignition switch operation.

With ACC ON or the ignition switch ON, and the shift lever in “P” position, check that ACC is ON or Ignition switch is ON > Ignition switch is OFF when the vehicle is left for 1 hour or more.

(3) If the inspection result indicates an improper operation, check the push button start system. General Diagnostic Table > INSPECTION

2. Check power status display

(1) Check the power indicator display of the push button ignition switch.

NOTE:

*1: Key collation is normal, and the stop light switch (AT) is ON.

Indicator display

Push button ignition switch status	Indicator lighting status
Ignition switch OFF (except for condition *1)	Light OFF
ACC ON (except for condition *1)	Orange light
Ignition switch ON (except for condition *1)	Orange light
Engine start standby (*1)	Green light
After engine is started	Light OFF

(2) If the inspection result indicates an improper operation, check the push button start system. General Diagnostic Table > INSPECTION

NOTE:

The indicator blinks if any of the following malfunctions are detected.

Detected malfunction	Indicator lighting status
Steering lock stuck	Green blinking
Steering lock CM internal malfunction	Orange blinking
Keyless access CM internal malfunction	Orange blinking
Vehicle speed signal malfunction	Orange blinking

Electrical specification

Refer to “Control Module I/O Signal” of “KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)” section. Control Module I/O Signal > ELECTRICAL SPECIFICATION ...

Other materials:

General diagnostic table inspection
SymptomsFaulty partsTire pressure warning light illuminates.Tire pressure is reduced.• Improper tire pressure adjustment• Punctured tireTire pressure warning light blinks 25 times and then illuminates.Tire pressure monitoring system has malfunction.• Air pressure sensor malfunction ...

Subaru Legacy BN/BS (2015-2019) Service Manual: Inspection

Electrical specification

Keyless buzzer

Other materials: