Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Impreza 2001-2002.2004-2007 Approved Subaru Impreza 2004 WRX STi 06. BODY 14. SECURITY AND LOCKS 03. Keyless Entry System
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KEYLESS ENTRY SYSTEM
SECURITY AND LOCKS
3. Keyless Entry System
A: SCHEMATIC
1. KEYLESS ENTRY
B: ELECTRICAL SPECIFICATION
1. KEYLESS ENTRY CONTROL MODULE
10 9 8 7 6 5 4 3 2 1
18 17 16 15 14 13 12 11
SL-00037
Content Terminal No. Measuring condition
Battery voltage is present when pressing the transmitter LOCK/ARM
Body integrated module 1 (OUTPUT)
button.
Battery voltage is present when pressing the transmitter UNLOCK/DIS-
Body integrated module 2 (OUTPUT)
ARM button.
Security control module 3 --
Security control module 4 --
Door lock switch 5 (INPUT) 0 V is present when operating the door lock switch.
Ignition switch (ON) 6 (INPUT) Battery voltage is present when ignition switch is turned to ON.
Key warning switch 7 (INPUT) Battery voltage is present when inserting the key into the ignition switch.
Door unlock switch 8 (INPUT) 0 V is present when operating the door lock switch.
Rear gate latch switch 9 (INPUT) 0 V is present when rear gate is open.
Door switch 10 (INPUT) 0 V is present when any door is open.
Ground 11 0 V is constantly present.
Battery voltage is present when pressing the transmitter UNLOCK/DIS-
Turn signal light (Left) 12 (OUTPUT)
ARM or LOCK/ARM button.
0 V is present when pressing the transmitter LOCK/ARM button three
Horn relay 13 (OUTPUT)
times within 5 seconds.
Power supply (Back-up) 14 Battery voltage is constantly present.
Power supply (Back-up) 15 Battery voltage is constantly present.
0 V is present when pressing the transmitter UNLOCK/DISARM or
Keyless buzzer 16 (OUTPUT)
LOCK/ARM button.
Security control module 17 --
Battery voltage is present when pressing the transmitter UNLOCK/DIS-
Turn signal light (Left) 18 (OUTPUT)
ARM or LOCK/ARM button.
SL-11
KEYLESS ENTRY SYSTEM
SECURITY AND LOCKS
2. BODY INTEGRATED MODULE
To B280 : A To B281 : B
8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1
16 15 14 13 12 11 10 9 20 19 18 17 16 15 14 13 12 11
SL-00220
Content Terminal No. Measuring condition
Door switch (Except driver's door) B7 (INPUT) 0 V is present when any door is open (Except driver's door).
Door switch (Driver's door) B8 (INPUT) 0 V is present when driver's door is open.
Door unlock switch B11 (INPUT) 0 V is present when operating the door unlock switch.
Door lock switch B12 (INPUT) 0 V is present when operating the door lock switch.
Battery voltage is present when pressing the transmitter LOCK/ARM
Keyless entry control module B13 (INPUT)
button.
Battery voltage is present when pressing the transmitter UNLOCK/DIS-
Keyless entry control module B14 (INPUT)
ARM button.
Ignition switch (ON) B19 (INPUT) Battery voltage is present when ignition switch is turned to ON.
Key warning switch B20 (INPUT) Battery voltage is present when inserting the key into ignition switch.
Power supply A1 Battery voltage is constantly present.
Power supply A2 Battery voltage is constantly present.
Ground A4 0 V is constantly present.
Room light A5 (OUTPUT) 0 V is present when pressing the transmitter UNLOCK/DISARM button.
Battery voltage is present when pressing the transmitter LOCK/ARM
Door and rear gate lock actuator A6 (OUTPUT)
button.
Door and rear gate lock actuator Battery voltage is present when pressing the transmitter UNLOCK/DIS-
A7 (OUTPUT)
(Except driver side) ARM button two times.
Battery voltage is present when pressing the transmitter UNLOCK/DIS-
Door lock actuator (Driver side) A8 (OUTPUT)
ARM button one time.
Ground A13 0 V is constantly present.
SL-12
KEYLESS ENTRY SYSTEM
SECURITY AND LOCKS
C: INSPECTION
1. SYMPTOM CHART
Symptom Repair order Reference
None of the functions of the key- 1. Check the transmitter battery and function.
2. Check the fuse.
3. Check the keyless entry control module power supply
4. Replace the keyless entry control module.
The transmitter cannot be pro- 1. Check the transmitter battery and function.
2. Check the ignition switch circuit.
3. Check the door switch.
4. Replace the keyless entry control module.
The door lock or unlock does not 1. Check the transmitter battery and function.
does not operate when using the 2. Check the key warning switch.
INSPECTION, Door Lock Control
3. Check the door switch.
SWITCH, INSPECTION, Keyless
Entry System.>
4. Check the output signal to body integrated module.
5. Replace the keyless entry control module.
The panic alarm does not oper- 1. Check the transmitter battery and function.
2. Check the horn operation.
3. Replace the keyless entry control module.
SL-13
KEYLESS ENTRY SYSTEM
SECURITY AND LOCKS
Symptom Repair order Reference
The buzzer chirp and hazard light 1. Check the buzzer chirp function.
2. Check the buzzer and hazard light opera-
3. Replace the keyless entry control module.
The room light operation do not 1. Check the room light operation.
2. Replace the keyless entry control module.
The door warning does not oper- 1. Check the door switch.
2. Check the buzzer operation.
3. Replace the keyless entry control module.
2. CHECK TRANSMITTER BATTERY AND FUNCTION
Step Check Yes No
1 CHECK TRANSMITTER BATTERY. Is the voltage more than 2 V? Go to step 2. Replace the trans-
1)Remove the battery from the transmitter. mitter battery.
2)Check the battery voltage.
2 CHECK LED OF TRANSMITTER. Does the LED blink one time? Go to step 3. Replace the trans-
1)Press the LOCK/ARM or UNLOCK/DISARM mitter.
3 CHECK LED OF TRANSMITTER. Does the LED blink one time, Go to step 4. Replace the trans-
Keep the LOCK/ARM button pressed. and then turn on? mitter.
4 CHECK LED OF TRANSMITTER. Does the LED blink one time? Go to step 5. Replace the trans-
Press the UNLOCK/DISARM button. mitter.
5 CHECK LED OF TRANSMITTER. Does the LED blink two times? Transmitter is OK. Replace the trans-
Keep the UNLOCK/DISARM button pressed. mitter.
SL-14
KEYLESS ENTRY SYSTEM
SECURITY AND LOCKS
3. CHECK BUZZER CHIRP SETTING
Step Check Yes No
1 CHECK BUZZER CHIRP SETTING. Does the buzzer signal chirp? Buzzer chirp func- Go to step 2.
1)Check the current setting of the buzzer chirp. tion is OK.
2)Remove the key from the ignition switch.
3)Close all doors and the rear gate.
4)Press the LOCK/ARM or UNLOCK/DISARM
button.
2 CHECK BUZZER CHIRP SETTING. Does the buzzer signal chirp? Buzzer chirp func- Check the trans-
1)Press the UNLOCK/DISARM button once. tion is OK. mitter function.
2)Press both the LOCK/ARM and UNLOCK/
4. CHECK FUSE
Step Check Yes No
1 CHECK FUSE. Is the fuse blown out? Replace the fuse Check the power
Remove and visually check the fuse No. 6 (in with a new one. supply and ground
the main fuse box) and No. 3 (in the fuse and circuit.
5. CHECK POWER SUPPLY AND GROUND CIRCUIT
Step Check Yes No
1 CHECK POWER SUPPLY. Is the voltage more than 10 V? Go to step 2. Check the harness
1)Disconnect the keyless entry control module for open circuits
harness connector. and shorts
2)Measure the voltage between the harness between the key-
connector terminal and chassis ground. less entry control
Connector & terminal module and fuse.
(B176) No. 14, No. 15 (+) -- Chassis
ground (-):
2 CHECK GROUND CIRCUIT. Is the resistance less than 10 The power supply Repair the har-
Measure the resistance between the harness ? and ground circuit ness.
connector terminal and chassis ground. are OK.
Connector & terminal
(B176) No. 11 -- Chassis ground:
SL-15
KEYLESS ENTRY SYSTEM
SECURITY AND LOCKS
6. CHECK IGNITION SWITCH CIRCUIT
Step Check Yes No
1 CHECK IGNITION SWITCH SIGNAL. Is the voltage more than 10 V? Ignition switch cir- Check the harness
1)Disconnect the keyless entry control module cuit is OK. for open circuits
harness connector. and shorts
2)Turn the ignition switch to ON. between the key-
3)Measure the voltage between harness con- less entry control
nector terminal and chassis ground. module and igni-
Connector & terminal tion relay.
(B176) No. 6 (+) -- Chassis ground (-):
7. CHECK DOOR SWITCH
Step Check Yes No
1 CHECK DOOR SWITCH CIRCUIT. Is the voltage 0 V when each Go to step 2. Go to step 3.
Measure the voltage between the keyless door or rear gate is opened?
entry control module harness connector termi-
nal and chassis ground.
Connector & terminal
Front and rear side door:
(B176) No. 10 (+) -- Chassis ground (-):
Rear gate:
(B176) No. 9 (+) -- Chassis ground (-):
2 CHECK DOOR SWITCH CIRCUIT. Is the voltage more than 10 V The door switch is Go to step 3.
Measure the voltage between the keyless when each door or rear gate is OK.
entry control module harness connector termi- closed?
nal and chassis ground.
Connector & terminal
Front and rear side door:
(B176) No. 10 (+) -- Chassis ground (-):
Rear gate:
(B176) No. 9 (+) -- Chassis ground (-):
3 CHECK DOOR SWITCH. Is the resistance more than 1 Go to step 4. Replace the door
1)Disconnect the door switch harness connec- M when the door switch is switch.
tor. depressed?
2)Measure the resistance between the door
switch terminals.
Terminals
Door switch No. 1 -- No. 3:
Rear gate latch switch No. 1 -- No. 2:
4 CHECK DOOR SWITCH. Is the resistance less than 1 Check the harness Replace the door
Measure the resistance between the door when the door switch is for open circuits switch.
switch terminals. released? and shorts
Terminals between the body
Door switch No. 1 -- No. 3: integrated module
Rear gate latch switch No. 1 -- No. 2: and door switch.
SL-16
KEYLESS ENTRY SYSTEM
SECURITY AND LOCKS
8. CHECK KEY WARNING SWITCH
Step Check Yes No
1 CHECK FUSE. Is the fuse blown out? Replace the fuse Go to step 2.
Remove and visually check the fuse No. 6 (in with a new one.
the main fuse box).
2 CHECK KEY WARNING SWITCH CIRCUIT. Is the voltage more than 10 V? Go to step 3. Go to step 4.
1)Disconnect the keyless entry control module
harness connector.
2)Insert the key into the ignition switch. (LOCK
position)
3)Measure the voltage between the harness
connector terminal and chassis ground.
Connector & terminal
(B176) No. 7 (+) -- Chassis ground (-):
3 CHECK KEY WARNING SWITCH CIRCUIT. Is the voltage 0 V? Key warning Go to step 4.
1)Remove the key from the ignition switch. switch is OK.
2)Measure the voltage between the harness
connector terminal and chassis ground.
Connector & terminal
(B176) No. 7 (+) -- Chassis ground (-):
4 CHECK KEY WARNING SWITCH. Is the resistance less than 1 Go to step 5. Replace the key
1)Disconnect the key warning switch harness ? warning switch.
connector.
2)Insert the key into the ignition switch. (LOCK
position)
3)Measure the resistance between the key
warning switch terminals.
Terminals
No. 1 -- No. 2:
5 CHECK KEY WARNING SWITCH. Is the resistance more than 1 Check the follow- Replace the key
1)Remove the key from the ignition switch. M? ing: warning switch.
2)Measure the resistance between the key ◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo