Data monitor/active test

Data monitor

NOTE: By using the SSM4 and reading [Data monitor], you can read the statuses and values for switches, sensors, actuators, and other items without removing parts. Because the non-intrusive inspection allows you to read the intermittent statuses or signals without interfering with parts or lines, it is very convenient. Diagnostic time can be saved by reading the [Data monitor] information at the initial stage of the troubleshooting.

CAUTION: The normal values written in the chart below are for reference. Do not depend on reference value only when judging if the part is faulty.

Connect the SSM4 to the DLC3.
Turn the ignition switch to ON.
Turn on the SSM4.
Enter the following menus: [Keyless Access(Collation ECM)] →[Data monitor], or [Body Control] →[Data monitor], or [Brake Control System] →[ABS/VDC System] →[Data monitor], or [Engine Control System] →[Data monitor] SSM screen: [Each System] →[Keyless Access(Power Supply ECM)] →[Data monitor]

Item name

Description/display range

Normal value

Remarks

[Shift P signal] ⁽¹⁾

Shift position is P Display range: ON/OFF

ON: The shift is in the P position OFF: The shift is not in the P position

Use this item to find out if the shift switch (P) is faulty.

[Steering unlock SW]

This item indicates the steering unlock sensor signal output from the steering lock actuator.
Display range: ON/OFF

ON: Steering unlock
OFF: Steering lock

In IG OFF and with the shift in the P position (transmission A/T), open (or close) one of the doors to lock the steering.
Change the power status to ACC ON or IG ON with the electrical key transmitter SUB-ASSY (electronic key) in the vehicle to unlock the steering.
The engine cannot be started when the steering unlock signal is OFF.

[Stop Light Switch 1]

Brake pedal status
Display range: ON/OFF

ON: Brake pedal is depressed.
OFF: Brake pedal is released.

Use this item to find out if the stop light switch is faulty.
If the engine cannot be started due to a malfunction in the stop light switch signal, "OFF" is displayed.
In case of a malfunction, you can start the engine by holding down the push button start switch.

[System SW1]

Push button start switch 1 status
Display range: ON/OFF

ON: Push button start switch is pressed
OFF: Push button start switch is released.

This item may not be displayed if the push button start switch is pressed too quickly.
Use this item to find out if the push button start switch input signal is faulty.

[System SW2]

Push button start switch 2 status
Display range: ON/OFF

ON: Push button start switch is pressed
OFF: Push button start switch is released.

Back-up for push button start switch 1. However, when operating by holding down the push button start switch, if both push button start switch 1 and push button start switch 2 are not functioning properly, the control will not operate.
This switch operates in the same way as push button start switch 1.

[Neutral SW/Clutch SW (AT model)]

Shift position (P, N) status
Display range: ON/OFF

ON: The shift is in the P or N position
OFF: The shift is not in the P or N position

Use this item to find out if the neutral start switch is faulty.
If the engine cannot be started due to a malfunction in the neutral start switch, "OFF" is displayed.

[Neutral SW/Clutch SW (MT model)]

Clutch pedal status
Display range: ON/OFF

ON: Clutch pedal is depressed.
OFF: Clutch pedal is released.

Use this item to find out if the clutch start switch is faulty.
If the engine cannot be started due to a malfunction in the clutch start switch, "OFF" is displayed.

[IG1 relay monitor (outside)]

Coil voltage monitor status for the IG1 relay
Display range: ON/OFF

ON: IG ON
OFF: IG OFF

Use this item to find out if the IG1 relay is faulty.
When in ACC ON, "OFF" is displayed.

[IG1 relay monitor (inside)]

Drive output monitor status for the IG1 relay
Display range: ON/OFF

ON: IG ON
OFF: IG OFF

Use this item to find out if the IG1 relay is faulty.
When in ACC ON, "OFF" is displayed.

[IG2 relay monitor (outside)]

Coil voltage monitor status for the IG2 relay
Display range: ON/OFF

ON: IG ON
OFF: IG OFF

Use this item to find out if the IG2 relay is faulty.
When in ACC ON, "OFF" is displayed.

[IG2 relay monitor (inside)]

Drive output monitor status for the IG2 relay
Display range: ON/OFF

ON: IG ON
OFF: IG OFF

Use this item to find out if the IG2 relay is faulty.
When in ACC ON, "OFF" is displayed.

[Starter request signal monitor]

Engine start request signal status
Display range: ON/OFF

ON: With the shift in the P position, depressing the brake, press and hold the push button start switch (transmission A/T)
ON: Depressing the clutch pedal, press and hold the push button start switch (transmission M/T) OFF: After approx. 1 second, release the push button start switch

If the engine cannot be started due to a malfunction in the start request signal, "OFF" is displayed.
If you press the push button start switch for a short time, the time "ON" is displayed will be very short. Therefore, you must press and hold it for a while.

[ACC relay monitor]

ACC relay drive status
Display range: ON/OFF

ON: ACC ON
OFF: ACC OFF

When in IG ON, "ON" is displayed.
When the engine is cranking, "OFF" is displayed.

[ACC Relay Cut Signal]

ACC relay cut signal input status
Display range: ON/OFF

ON: When cranking
OFF: Not cranking

[Engine Speed]

Engine status
Display range: [Stopped]/[rotating]

[Rotating]: While engine is running [Stopped]: The engine is stopped

[Vehicle speed signal]

Vehicle running/stopped status
Display range: [Stopped status]/[Drive status]

[Drive status]: The vehicle is running (at 5 km/h or faster)
[Stopped status]: The vehicle is stopped

[Power supply status]

Power status
Display range: [All OFF status]/[ACC relay ON status]/[IG1 relay ON status]/[IG2 relay ON status]/[ST status]

[All OFF]: ACC OFF and IG OFF
ACC ON: ACC ON
IG1 ON: IG ON
IG2 ON: IG ON
ST: Start request signal transmitting

Because "IG1 ON" and "IG2 ON" are displayed almost simultaneously, you may not be able to see the "IG1 ON" indication. (Because "IG1 ON" is displayed for a short time.)

[Powertrain Type]

Vehicle identification status
Display range: [Cnv-MT]/[Cnv-AT]

[Cnv-AT]: A conventional A/T vehicle
(A/T vehicle not equipped with HV)
[Cnv-MT]: A conventional M/T vehicle

[IG1 outside circuit abnormal]

Malfunction in the coil-side circuit for the IG1 relay
Display range: Yes/No

Yes: Circuit not functioning properly
No: Circuit functioning properly

Use this item to find out if the IG1 relay is faulty.
If the engine cannot be started due to a malfunction in the IG1 relay, "OFF" is displayed.

[IG2 outside circuit abnormal]

Malfunction in the coil-side circuit for the IG2 relay
Display range: Yes/No

[Yes]: Circuit not functioning properly
[No]: Circuit functioning properly

Use this item to find out if the IG2 relay is faulty.
If the engine cannot be started due to a malfunction in the IG2 relay, "OFF" is displayed.

[Start-stop SW fault]

This item detects a mismatch between the push button start switch 1 signal and the push button start switch 2 signal.
Display range: Yes/No

[Yes]: Switches not functioning properly (mismatch between the signals of push button start switches 1 and 2) [No]: Switches functioning properly

You can start the engine even when the result is [Yes]. However, you cannot use the "emergency IG OFF when running" or "emergency engine start when the brake is faulty" functions that are operated by pressing and holding the push button start switch.

[Park Signal Mismatch]

Shift position (P) signal malfunction Display range: Yes/No

[Yes]: Signals not functioning properly (mismatch between the CAN communication and direct signal statuses)
[No]: Signals functioning properly

You can switch to OFF even when the result is [Yes]. (vehicle will not be left ACC ON or IG ON.)

[Steering lock unlock wait time-out]

Malfunction in the steering lock/unlock function

Display range: Yes/No [Yes]: Lock/unlock not functioning properly (Example: the lock bar gets stuck)
[No]: Lock/Unlock functioning properly

If the engine cannot be started due to a malfunction in the steering lock/unlock, "[Yes]" is displayed.

[Key collation wait time-out]

Key collation malfunction Display range: Yes/No

[Yes]: Collation not functioning properly (A collation malfunction is detected when the ID code sent from the electronic key and the ID code recorded in the Collation ECM do not match.)
[No]: Collation functioning properly

If the engine cannot be started due to a key collation malfunction, [Yes] is displayed.

[Shift N signal⁽¹⁾]

Shift in position N
Display range: ON/OFF

ON: The shift is in the N position
OFF: The shift is not in the N position

Use this item to find out if the shift switch (N) is faulty.

⁽¹⁾	Transmission A/T

Use the SSM4 and [Data monitor] to determine functionality and narrow down the defective part.

NOTE: Enter the vehicle while carrying the electrical key transmitter SUB-ASSY (Electronic key), set the ignition to IG OFF and put the shifter in the P position, and perform the following operations to check each [Data monitor] activity.

Fig 1: Transmission A/T Illumination Pattern

Courtesy of SUBARU OF AMERICA, INC.

*1: Press the push button start switch without depressing the brake pedal, and check that the power status changes to ACC ON.

*2: Press the push button start switch without depressing the brake pedal, and check that the power status changes to IG ON.

*3: Depress the brake pedal. (Stop light switch ON)

*4: Press the push button start switch while depressing the brake pedal, and check that the engine starts.

*5: Press the push button start switch while depressing the brake pedal, and check that the power status changes to IG OFF.

*6: Release the brake pedal.

*7: Open a door.

NOTE: Enter the vehicle while carrying the electrical key transmitter SUB-ASSY (Electronic key), set the ignition to IG OFF and perform the following operations to check each [Data monitor] activity.

Fig 2: Transmission M/T Illumination Pattern

Courtesy of SUBARU OF AMERICA, INC.

*1: Press the push button start switch without depressing the clutch pedal, and check that the power status changes to ACC ON.

*2: Press the push button start switch without depressing the clutch pedal, and check that the power status changes to IG ON.

*3: Depress the clutch pedal. (Clutch start switch ON)

*4: Press the push button start switch while depressing the clutch pedal, and check that the engine starts.

*5: Press the push button start switch while depressing the clutch pedal, and check that the power status changes to IG OFF.

*6: Release the clutch pedal.

*7: Open a door.

PARTS DESCRIPTION

Item name	Description/display range	Normal value	Remarks
[Ignition]	This item indicates the IG power input status of the smart key ECM ASSY (collation ECM). Display range: ON/OFF	ON: IG ON OFF: IG OFF	When it is in the ACC ON state, "OFF" is displayed.
[Immobilizer]	This item indicates the engine immobilizer system status, as determined by the smart key ECM ASSY (collation ECM). Display range: Unset/Set	Unset: The engine immobilizer is unset (engine start permitted) (ACC ON or further) Set: The engine immobilizer is set (engine start prohibited) (IG OFF)	When [Set] is displayed for this item, you cannot start the engine. NOTE: The security indicator light blinks when [Set] is displayed for this item. The security indicator light is associated with the set/unset status of the immobilizer, but not with the lock/unlock status of the steering wheel.
[Sleep possible status]	This item indicates the sleep enabled status of the steering lock ECM. Display range: [Sleep-mode possible]/[Sleep-mode not possible]	Sleep permitted: Sleep possible status No: Sleep not permitted	-
[Wake-up transmission status]	This item indicates the transmission status of the wake-up signal for the steering lock ECM. Display range: Yes/No	Yes: Wake-up signal transmission No: No wake-up signal transmission	-
[Lock confirmation]	This item indicates the lock confirmation status of the steering lock actuator ASSY (steering lock ECM). Display range: Set/Unset	Set: Lock confirmed Unset: Lock not confirmed	The steering is not locked when "Unset" is displayed.
[Unlock confirmation]	This item indicates the unlock confirmation status of the steering lock actuator ASSY (steering lock ECM). Display range: Set/Unset	[Set]: Unlock confirmed [UnSet]: Unlock not confirmed	The steering is not unlocked when "Unset" is displayed. (The engine cannot be started.)
[Engine start]	This item indicates the status of the engine start permission signal, which is decided by the steering actuator ASSY (steering lock ECM) and sent to the smart key computer (collation ECM). Display range: OK/NG	OK: Engine start permitted NG: Engine start prohibited	If "OK" is displayed for this item, the smart key ECM ASSY (collation ECM) receives the unlock confirmation signal from the steering lock actuator ASSY (steering lock ECM) and enables fuel injection and the engine to start. When [NG] is displayed for this item, you cannot start the engine.
[Sensor abnormal (past)]	This item indicates a history of malfunctions in the position sensor inside the steering lock actuator ASSY (steering lock ECM). Display range: [NG(Past)]/[OK]	Abnormal: There is an error history. (Both the lock and unlock sensors inside the steering lock actuator ASSY (steering lock ECM) were ON at the same time. Normally, these sensors are not ON at the same time.) OK: There is no error history for the lock and unlock sensors inside the steering lock actuator ASSY (steering lock ECM).	If [NG(Past)] is displayed for this item, the problem might be caused by a malfunction of the position sensor inside the steering lock actuator ASSY or a mechanical failure.
[Motor power supply short-circuit abnormal (past)]	This item indicates a history of malfunctions (circuit shorts) in the signal transmitted from the smart key ECM ASSY (collation ECM) to the steering lock actuator ASSY (steering lock ECM). Display range: [NG(Past)]/[OK]	[NG(Past)]: Motor power supply short circuit history present [OK]: No motor power supply short circuit history	This item displays the history when a circuit malfunction occurs between the smart key ECM ASSY (collation ECM) and the steering lock actuator ASSY (steering lock ECM).
[Motor driver short-circuit abnormal (past)]	This item indicates a history of malfunctions (circuit shorts) in the motor drive circuit inside the steering lock actuator ASSY (steering lock ECM). (The diagnostic code B2781 is output) Display range: [NG(Past)]/[OK]	[NG(Past)]: Motor driver short circuit history present [OK]: No motor driver short circuit history present	This item indicates the malfunctions in the steering lock motor drive circuit inside the steering lock actuator ASSY (steering lock ECM).
[Steering lock lock/unlock command reception history]	This item indicates the unlock request signal reception history. Display range: [Unrec]/[Rec]	[Rec]: Unlock request signal reception history present [Unrec]: No unlock request signal reception history	-
[Lock Bar Stuck Error]	This item indicates a history of times when the steering lock bar was driven to the unlock position for a certain period of time but the steering wheel could not be properly unlocked. Display range: Yes/No	Yes: There is a history of lock bar engagement. No: No history of the lock bar being stuck	-
[Push start abnormal]	This item indicates a history of push start malfunctions caused by the steering lock actuator ASSY (steering lock ECM). Display range: [NG(Past)]/[OK]	[NG(Past)]: Push button start malfunction history present [OK]: No push button start malfunction history	-
[EEPROM access abnormal]	This item indicates the steering lock ECM status. Display range: [NG(Past)]/[OK]	[Abnormal]: Steering lock ECM malfunction [Normal]: Steering lock ECM normal	-
[Engine start permission request reception status]	This item indicates the reception status of the engine start permission signal, which is decided by the steering lock actuator ASSY (steering lock ECM) and sent to the smart key ECM ASSY (collation ECM). Display range: NG/OK	NG: When it is not yet received OK: When it has already been received	If [OK] is displayed, the smart key ECM ASSY (collation ECM) has received the unlock confirmation signal from the steering lock actuator ASSY (steering lock ECM) and the engine injection and ignition have been permitted. If [NG] is displayed for this item, the engine cannot be started.
[L Code Check]	This item indicates the result of collation between the smart key ECM ASSY (collation ECM) and the steering lock actuator ASSY (steering lock ECM). Display range: [NG(Past)]/[OK]	[Abnormal]: Collation results abnormal [Normal]: Collation results normal	The L code is not registered for the smart key ECM ASSY (collation ECM) or the steering lock actuator ASSY (steering lock ECM). The steering cannot be locked. The steering cannot be unlocked. (The engine cannot be started.)
[Steering lock unlock request reception status]	This item indicates the unlock request signal reception status. Display range: NG/OK (10 s)	[NG(Past)]: IG ON, ACC ON or engine start operation not performed OK: Within 10 seconds after IG ON, ACC ON or engine start operation	If the unlock request signal is not received, the engine cannot be started. If the steering unlock conditions are met but [OK(10s)] is not displayed, the smart key ECM ASSY (collation ECM) might have a malfunction.
[Steering lock request reception status]	This item indicates the lock request signal reception status. Display range: OK (10s)/NG	OK: When a lock request is received within 10 seconds after any one of the doors is opened while the shifter is in the P position (Transmission A/T) and the vehicle ignition is turned to IG OFF. [NG(Past)]: Other than above	If the steering lock conditions are met but [OK(10s)] is not displayed, the smart key ECM ASSY (collation ECM) might have a malfunction.
[L Code Check(Past)]	This item indicates the history of the results of collation between the smart key ECM ASSY (collation ECM) and the steering lock actuator ASSY (steering lock ECM). Display range: [NG(Past)]/[OK]	[NG(Past)]: There is an error history of collation results [OK]: There is no error history of collation results	-
[S Code Check]	This item indicates the collation result between the smart key ECM ASSY and the ID code box. Display range: [NG(Past)]/[OK]	[Abnormal]: Collation not functioning properly [Normal]: Collation functioning properly	The S code is not registered for the smart key ECM ASSY or the ID code box. The engine cannot be started.
[S Code Check(Past)]	This item indicates the collation result history between the smart key ECM ASSY and the ID code box. Display range: [NG(Past)]/[OK]	[NG(Past)]: There is an error history of collation results [OK]: There is no error history of collation results	-

NOTE: Enter the vehicle while carrying the electrical key transmitter SUB-ASSY (Electronic key), set the ignition to IG OFF and put the shifter in the P position (Transmission A/T), and perform the following operations to check each [Data monitor] activity.

Fig 3: Steering Locked/Unlocked Illumination Pattern

Courtesy of SUBARU OF AMERICA, INC.

*1: Press the push button start switch without depressing the brake pedal (transmission A/T) or the clutch pedal (transmission M/T). Check that the power status switches to ACC ON.

*2: Press the push start switch without depressing the brake pedal (transmission A/T) or the clutch pedal (transmission M/T). Check that the power status switches to IG ON.

*3: Press the push button start switch and check that the power status switches to IG OFF.

*4: Open a door. (The steering wheel is now locked).

PARTS DESCRIPTION

Item name

Description/display range

Normal value

Remarks

[Engine Speed]

Indicates the engine speed
Display range: 0 to 16383.75 r/min

Varies depending on the engine speed

[Starter Switch]

Starter drive request
Display range: ON/OFF

ON: The starter drive request is output.
OFF: The starter drive request is not output.

If there is a malfunction, the engine cannot be cranked.

[Starter cut relay]

This item indicates the starter cut relay status.
Display range: ON/OFF

ON: The starter cut relay is ON
OFF: The starter cut relay is OFF

"ON" is displayed when the engine cannot be cranked.

[Shift SW Status (P Range)] ⁽¹⁾

This item indicates the neutral start switch status.
Display range: ON/OFF

ON: The shift is in the P position
OFF: The shift is not in the P position

If there is a malfunction, the engine cannot be cranked.

[Shift SW Status (N Range)] ⁽¹⁾

This item indicates the neutral start switch status.
Display range: ON/OFF

ON: The shift is in the N position
OFF: The shift is not in the N position

If there is a malfunction, the engine cannot be cranked.

[ST1]

This item indicates the signal from the stop light switch ASSY.
Display range: ON/OFF

ON: Brake pedal is depressed.
OFF: Brake pedal is released.

[Ignition Switch]

This item indicates the IG2 status.
Display range: ON/OFF

ON: IG2 relay is ON
OFF: IG2 relay is OFF

⁽¹⁾	Automatic transmission Note: Perform the following operations to check the result for each [Data monitor] item.

Fig 4: Engine Speed Illumination Pattern

Courtesy of SUBARU OF AMERICA, INC.

*1: Transmission A/T: With the power status in IG ON and the shift in position P, depress the brake pedal and press the push button start switch. Check that the engine starts.

Transmission M/T: With the power status in IG ON, depress the clutch pedal and press the push button start switch. Check that the engine starts.

PARTS DESCRIPTION

Item name	Description/display range	Normal value	Remarks
[Wheel speed]	This item indicates the vehicle speed. Display range: 0.0 to 326.4 [km/h]	0.0 to 326.4 [km/h] (Approximately the same as the actual vehicle speed)	-

Active test
1. Turn the ignition switch to OFF.
2. Connect the SSM4 to the DLC3.
3. Turn the ignition switch to ON and select [Each System] →[Keyless Access(Power Supply ECM)] →[Active Test] to display the [Active Test] list.
4. Conduct an [Active Test] and determine functionality and narrow down the defective part.

PARTS DESCRIPTION

Item name	Part to be forcibly driven	Drive	Remarks
[Steering lock power supply]	Smart key computer ASSY (collation ECM)	Supply/stop	When in IG ON
[STSW]	Smart key computer ASSY (collation ECM)	Supply/stop	Perform cranking in order to turn the starter switch ON. Be very careful regarding the service operation. When forcibly driving this item, implement it with the ignition ON.
[IG2]	Smart key computer ASSY (collation ECM)	Supply/stop	Turn the ignition power (relay upstream battery side) ON. If you forcibly drive this item, there may be failure codes registered for the engine, transmission, and the VDC unit. In that case, you must clear the failure codes.
[IG1]	Smart key computer ASSY (collation EM)	Supply/stop	Turn the ignition power (relay upstream alternator side) ON. If you forcibly drive this item, there may be failure codes registered for the engine, transmission, and the VDC unit. In that case, you must clear the failure codes.
[ACC]	Smart key computer ASSY (collation ECM)	Supply/stop	Turn the ACC power ON.

PARTS DESCRIPTION

Item name	Part to be forcibly driven	Drive	Remarks
[Power/Engine SW Light]	Push button start switch illumination	Output/stop	Push button start switch illumination OFF (15 seconds or more since ON→OFF) and in ACC ON, IG ON, or the engine is turning.