Subaru Impreza 2004 User manual

FUJI HEAVY INDUSTRIES LTD. G1870GE6
2004 IMPREZA SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
This service manual has been prepared
to provide SUBARU service personnel
with the necessary information and data
for the correct maintenance and repair
of SUBARU vehicles.
This manual includes the procedures
for maintenance, disassembling, reas-
sembling, inspection and adjustment of
components and diagnostics for guid-
ance of experienced mechanics.
Please peruse and utilize this manual
fully to ensure complete repair work for
satisfying our customers by keeping
their vehicle in optimum condition.
When replacement of parts during
repair work is needed, be sure to use
SUBARU genuine parts.
All information, illustration and specifi-
cations contained in this manual are
based on the latest product information
available at the time of publication
approval.
HVAC SYSTEM
(HEATER, VENTILATOR AND A/C) AC
HVAC SYSTEM (AUTO A/C)
(DIAGNOSTICS) AC(diag)
AIRBAG SYSTEM AB
AIRBAG SYSTEM (DIAGNOSTICS) AB(diag)
SEAT BELT SYSTEM SB
LIGHTING SYSTEM LI
WIPER AND WASHER SYSTEMS WW
ENTERTAINMENT ET
COMMUNICATION SYSTEM COM
GLASS/WINDOWS/MIRRORS GW
BODY STRUCTURE BS
INSTRUMENTATION/DRIVER INFO IDI
SEATS SE
SECURITY AND LOCKS SL
SUNROOF/T-TOP/CONVERTIBLE TOP
(SUNROOF) SR
EXTERIOR/INTERIOR TRIM EI
EXTERIOR BODY PANELS EB

2004 IMPREZA SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
G1870GE6
CRUISE CONTROL SYSTEM CC
CRUISE CONTROL SYSTEM
(DIAGNOSTICS) CC(diag)
IMMOBILIZER (DIAGNOSTICS) IM(diag)

SECURITY AND LOCKS
SL
Page
1. General Description ....................................................................................2
2. Door Lock Control System ........................................................................10
3. Keyless Entry System ...............................................................................15
4. Front Inner Remote...................................................................................22
5. Front Outer Handle ...................................................................................23
6. Front Door Latch Assembly.......................................................................24
7. Front Door Lock Actuator ..........................................................................25
8. Rear Inner Remote....................................................................................26
9. Rear Outer Handle ....................................................................................27
10. Rear Door Latch Assembly .......................................................................28
11. Rear Door Lock Actuator...........................................................................29
12. Rear Gate Outer Handle ...........................................................................30
13. Rear Gate Latch Assembly .......................................................................31
14. Rear Gate Latch Lock Actuator.................................................................32
15. Trunk Lid Lock Assembly ..........................................................................33
16. Front Hood Lock Assembly .......................................................................34
17. Remote Openers.......................................................................................35
18. Ignition Key Lock.......................................................................................37
19. Key Lock Cylinders ...................................................................................38
20. Immobilizer Control Module ......................................................................39
21. Immobilizer Antenna .................................................................................40
22. Keyless Entry Control Module...................................................................41
23. Double Lock Module .................................................................................42
24. Keyless Transmitter ..................................................................................43

SL-2
SECURITY AND LOCKS
General Description
1. General Description
A: COMPONENT
1. DOOR LOCK ASSEMBLY
•Without double lock
(A) Front (B) Rear
(1) Inner remote ASSY (5) Door latch Tightening torque: N·m (kgf-m, ft-lb)
(2) Inner remote cover (6) Striker T1: 6.4 (0.65, 4.7)
(3) Bell crank (7) Door outer handle T2: 7.4 (0.75, 5.5)
(4) Auto-door lock actuator (8) Key cylinder T3: 17.6 (1.8, 13.0)
SL-00171
(1)
(1)
(2)
(2)
(3)
(3)
(7)
(7)
(8) T2
T3
(4)
(4)
(5)
(6)
(5)
T3
(6)
T2
T1
(A)
(B)
T1

SL-3
SECURITY AND LOCKS
General Description
•With double lock
(A) Front (B) Rear
(1) Inner remote ASSY (6) Striker Tightening torque: N·m (kgf-m, ft-lb)
(2) Inner remote cover (7) Door outer handle T1: 6.4 (0.65, 4.7)
(3) Bell crank (8) Outer handle cover T2: 7.4 (0.75, 5.5)
(4) Auto-door lock actuator (9) Key cylinder (switch) T3: 17.6 (1.8, 13.0)
(5) Door latch
(4)
SL-00172
(1)
(1)
(2)
(2)
(3)
(3)
(7)
(7)
(8)
(9)
(8)
T2
T3
(4)
(5)
(6)
(5)
T3
(6)
T2
T1
(A)
(B)
T1

SL-4
SECURITY AND LOCKS
General Description
2. TRUNK LID AND REAR GATE LOCK
•Without double lock
(A) Trunk (B) Rear gate
(1) Key cylinder (5) Rear gate outer handle Tightening torque: N·m (kgf-m, ft-lb)
(2) Cable (6) Rear gate actuator T1: 4.5 (0.45, 3.3)
(3) Striker (7) Rear gate latch T2: 25 (2.5, 18.4)
(4) Trunk lid lock ASSY
SL-00319
(1)
(6)
(4)
(5)
(3)
(3)
(2)
T2
T2
T2
T1
(7)
(A) (B)

SL-5
SECURITY AND LOCKS
General Description
•With double lock
(A) Trunk (B) Rear gate
(1) Key cylinder (6) Striker Tightening torque: N·m (kgf-m, ft-lb)
(2) Bracket (7) Rear gate outer handle T1: 4.5 (0.45, 3.3)
(3) Key cylinder stopper (8) Rear gate actuator T2: 25 (2.5, 18.4)
(4) Trunk lid lock ASSY (9) Rear gate latch
(5) Cable (10) Rear gate latch cover
SL-00306
(1)
(2)
(3)
(8)
(10)
(4)
(7)
(6)
(6)
(5)
T2
T2
T2
T1
(9)
(A) (B)

SL-6
SECURITY AND LOCKS
General Description
3. HOOD LOCK AND REMOTE OPENERS
(A) Sedan (B) Wagon
(1) Hood lock ASSY (4) Cover Tightening torque: N·m (kgf-m, ft-lb)
(2) Lever ASSY (5) Pull handle ASSY T1: 6.4 (0.65, 4.7)
(3) Cable T2: 32 (3.3, 23.9)
SL-00174
HOOD
(A)
(B)
(3)
(2)
(3)
(3)
(4)
(5)
T1
T1
(4)
(5)
(1)
T2

SL-7
SECURITY AND LOCKS
General Description
4. IMMOBILIZER SYSTEM
NOTE:
IMM ECM location for RHD model is symmetrically opposite.
(1) Antenna (3) Immobilizer control module (IMM
ECM)
(4) Transponder
(2) Immobilizer indicator light (LED
bulb)
SL-00175
(1)
(3)
(2)
(4)

SL-8
SECURITY AND LOCKS
General Description
5. KEYLESS ENTRY SYSTEM
(1) Double lock module (with double
lock)
(3) Rear gate latch (5) Keyless entry control module
(LHD model)
(4) Door switch
(2) Keyless entry control module
(RHD model)
SL-00176
(2)
(3)
(4)
(5)
(1)

SL-9
SECURITY AND LOCKS
General Description
B: CAUTION
•Before disassembling or reassembling parts,
always disconnect the ground cable from
battery. When repairing radio, control module,
etc. which are provided with memory functions,
record the memory contents before
disconnecting the ground cable from battery.
Otherwise, these contents are cancelled upon
disconnection.
•Reassemble parts in the reverse order of
disassembly procedure unless otherwise
indicated.
•Adjust parts to specifications contained in
this manual if so designated.
•Connect the connectors securely during
reassembly.
•After reassembly, ensure all functional parts
operate smoothly.
•Airbag system wiring harness is routed near
the electrical parts and switch.
•All airbag system wiring harness and
connectors are colored yellow. Do not use
electrical test equipment on these circuits.
•Be careful not to damage the airbag system
wiring harness when servicing the ignition key
cylinder.
C: PREPARATION TOOL
1. SPECIAL TOOLS
2. GENERAL TOOLS
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
925580000 PULLER Used for removing trim clip
TOOL NAME REMARKS
Circuit Tester Used for measuring resistance and voltage.
Drill Used for replacing ignition key lock.
ST-925580000

SL-10
SECURITY AND LOCKS
Door Lock Control System
2. Door Lock Control System
A: WIRING DIAGRAM
1. DOOR LOCK CONTROL
<Ref. to WI-188, WIRING DIAGRAM, Keyless Entry System.>
B: INSPECTION
1. SYMPTOM CHART
Symptom Repair order Reference
The door lock control system does
not operate.
1. Check the fuse.
<Ref. to SL-11, CHECK FUSE,
INSPECTION, Door Lock Control
System.>
2. Check the power supply and ground circuit for
keyless entry control module (without double lock)
or double lock module (with double lock).
<Ref. to SL-11, CHECK POWER
SUPPLY AND GROUND CIRCUIT,
INSPECTION, Door Lock Control
System.>
3. Check the door lock switch and the circuit.
<Ref. to SL-12, CHECK DOOR
LOCK SWITCH AND CIRCUIT,
INSPECTION, Door Lock Control
System.>
4. Check the door lock actuator and the circuit.
<Ref. to SL-13, CHECK DOOR
LOCK ACTUATOR AND CIRCUIT,
INSPECTION, Door Lock Control
System.>
The door lock switch does not oper-
ate. Check the door lock switch and the circuit.
<Ref. to SL-12, CHECK DOOR
LOCK SWITCH AND CIRCUIT,
INSPECTION, Door Lock Control
System.>
A specific door lock actuator does not
operate. Check the door lock actuator and the circuit.
<Ref. to SL-13, CHECK DOOR
LOCK ACTUATOR AND CIRCUIT,
INSPECTION, Door Lock Control
System.>
The key cylinder lock switch does not
operate. (with double lock) Check the key cylinder lock switch and circuit.
<Ref. to SL-14, CHECK KEY CYL-
INDER LOCK SWITCH AND CIR-
CUIT, INSPECTION, Door Lock
Control System.>
The double lock does not operate.
(with double lock)
Check the door lock actuator (double lock) and cir-
cuit.
<Ref. to SL-14, CHECK DOOR
LOCK ACTUATOR (DOUBLE
LOCK) AND CIRCUIT, INSPEC-
TION, Door Lock Control System.>

SL-11
SECURITY AND LOCKS
Door Lock Control System
2. CHECK FUSE
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Step Check Yes No
1 CHECK FUSE.
Remove and visually check the fuse No. 2 (in
the main fuse box) and No. 3 (in the fuse and
relay box).
Is the fuse blown out? Replace the fuse
with a new one.
Check the power
supply and ground
circuit. <Ref. to
SL-11, CHECK
POWER SUPPLY
AND GROUND
CIRCUIT,
INSPECTION,
Door Lock Control
System.>
Step Check Yes No
1 CHECK POWER SUPPLY.
1)Disconnect the keyless entry control module
or double lock module harness connector.
2)Measure the voltage between the harness
connector terminal and chassis ground.
Connector & terminal
Without double lock:
(B176) No. 5, 16 (+) —Chassis ground (–):
With double lock:
(B324) No. 7, 8 (+) —Chassis ground (–):
Is the voltage more than 10 V? Go to step 2. Check the harness
for open circuits or
shorts between
the keyless entry
control module or
double lock mod-
ule and the fuse.
2 CHECK GROUND CIRCUIT.
Measure the resistance between the harness
connector terminal and chassis ground.
Connector & terminal
Without double lock:
(B176) No. 6, 14 —Chassis ground:
With double lock:
(B324) No. 9 —Chassis ground:
Is the resistance less than 10
Ω?
The power supply
and ground circuit
is OK.
Repair the har-
ness.

SL-12
SECURITY AND LOCKS
Door Lock Control System
4. CHECK DOOR LOCK SWITCH AND CIRCUIT
Step Check Yes No
1 CHECK DOOR LOCK SWITCH CIRCUIT.
1)Disconnect the keyless entry control module
or double lock module harness connector.
2)Measure the resistance between the har-
ness connector terminal and chassis ground
when moving the door lock switch to LOCK.
Connector & terminal
Without double lock:
(B176) No. 10 —Chassis ground:
With double lock:
(B325) No. 7 —Chassis ground:
Is the resistance less than 10
Ω?
Go to step 2. Go to step 3.
2 CHECK DOOR LOCK SWITCH CIRCUIT.
Measure the resistance between the harness
connector terminal and chassis ground when
the door lock switch is moved to UNLOCK.
Connector & terminal
Without double lock:
(B176) No. 8 —Chassis ground:
With double lock:
(B325) No. 4 —Chassis ground:
Is the resistance less than 10
Ω?
The door lock
switch is OK.
Go to step 3.
3 CHECK DOOR LOCK SWITCH.
1)Disconnect the door lock switch harness
connector.
2)Measure the resistance between the door
lock switch terminals when moving the door
lock switch to LOCK.
Connector & terminal
LHD model:
(D7) No. 5 —No. 9:
RHD model:
(D7) No. 1 —No. 15:
Is the resistance less than 1
Ω?
Go to step 4. Replace the door
lock switch.
4 CHECK DOOR LOCK SWITCH.
Measure the resistance between the door lock
switch terminals when moving the door lock
switch to UNLOCK.
Connector & terminal
LHD model:
(D7) No. 5 —No. 8:
RHD model:
(D7) No. 1 —No. 16:
Is the resistance less than 1
Ω?
Check the harness
for open circuits or
shorts between
the keyless entry
control module or
double lock mod-
ule and the door
lock switch.
Replace the door
lock switch.

SL-13
SECURITY AND LOCKS
Door Lock Control System
5. CHECK DOOR LOCK ACTUATOR AND CIRCUIT
Step Check Yes No
1 CHECK OUTPUT SIGNAL.
Measure the voltage between the harness con-
nector terminal of keyless entry control module
or double lock module and chassis ground
when moving the door lock switch to LOCK.
Connector & terminal
Without double lock:
(B176) No. 18 (+) —Chassis ground (–):
With double lock:
(B324) No. 3 (+) —Chassis ground (–):
Is the voltage more than 10 V? Go to step 2. Replace the key-
less entry control
module or double
lock module.
2 CHECK OUTPUT SIGNAL.
Measure the voltage between the harness con-
nector terminal of keyless entry control module
or double lock module and chassis ground
when moving the door lock switch to UNLOCK.
Connector & terminal
Without double lock:
(B176) No. 17 (+) —Chassis ground (–):
With double lock:
(B324) No. 5 (+) —Chassis ground (–):
Is the voltage more than 10 V? Go to step 3. Replace the key-
less entry control
module or double
lock module.
3 CHECK DOOR LOCK ACTUATOR.
Check the door lock actuator.
Front door lock actuator: <Ref. to SL-25, Front
Door Lock Actuator.>
Rear door lock actuator: <Ref. to SL-29, Rear
Door Lock Actuator.>
Rear gate latch lock actuator: <Ref. to SL-32,
Rear Gate Latch Lock Actuator.>
Is the door lock actuator OK? Check the harness
for open circuits or
shorts between
the keyless entry
control module or
double lock mod-
ule and the door
lock actuator.
Replace the door
lock actuator.

SL-14
SECURITY AND LOCKS
Door Lock Control System
6. CHECK KEY CYLINDER LOCK SWITCH AND CIRCUIT
7. CHECK DOOR LOCK ACTUATOR (DOUBLE LOCK) AND CIRCUIT
Step Check Yes No
1 CHECK KEY CYLINDER LOCK SWITCH CIR-
CUIT.
1)Disconnect the double lock module harness
connector.
2)Measure the resistance between harness
connector terminal and chassis ground when
turning the key cylinder lock switch to lock posi-
tion.
Connector & terminal
(B325) No. 2 —Chassis ground:
Is the resistance less than 10
Ω?
Go to step 2. Go to step 3.
2 CHECK KEY CYLINDER LOCK SWITCH CIR-
CUIT.
Measure the resistance between harness con-
nector terminal and chassis ground when turn-
ing the key cylinder lock switch to unlock
position.
Connector & terminal
(B325) No. 3 —Chassis ground:
Is the resistance less than 10
Ω?
Key cylinder lock
switch is OK.
Go to step 3.
3 CHECK KEY CYLINDER LOCK SWITCH.
1)Disconnect the key cylinder lock switch con-
nector.
2)Measure the resistance between key cylin-
der lock switch terminals when turning the key
cylinder lock switch to lock position.
Terminals
No. 1 —No. 2
Is the resistance less than 1
Ω?
Go to step 4. Replace the key
cylinder lock
switch.
4 CHECK KEY CYLINDER LOCK SWITCH.
Measure the resistance between key cylinder
lock switch terminals when turning the key cyl-
inder lock switch to unlock position.
Terminals
No. 2 —No. 3
Is the resistance less than 1
Ω?
Check the harness
for open or short
circuits between
double lock mod-
ule and key cylin-
der lock switch.
Replace the key
cylinder lock
switch.
Step Check Yes No
1 CHECK OUTPUT SIGNAL.
Measure the resistance between double lock
module harness connector terminal and chas-
sis ground when turning the key cylinder lock
switch to lock position.
Connector & terminal
(B324) No. 6 (+) —Chassis ground (–):
Is the voltage more than 10 V? Go to step 2. Replace the dou-
ble lock module.
2 CHECK OUTPUT SIGNAL.
Measure the resistance between double lock
module harness connector terminal and chas-
sis ground when turning the key cylinder lock
switch to unlock position.
Connector & terminal
(B324) No. 6 (+) —Chassis ground (–):
Is the voltage more than 10 V? Go to step 3. Replace the dou-
ble lock module.
3 CHECK DOOR LOCK ACTUATOR.
Check door lock actuator.
Front door lock actuator: <Ref. to SL-25, Front
Door Lock Actuator.>
Rear door lock actuator: <Ref. to SL-29, Rear
Door Lock Actuator.>
Is the door lock actuator nor-
mal?
Check the harness
for open or short
circuits between
double lock mod-
ule and door lock
actuator.
Replace the door
lock actuator.

SL-15
SECURITY AND LOCKS
Keyless Entry System
3. Keyless Entry System
A: WIRING DIAGRAM
<Ref. to WI-188, WIRING DIAGRAM, Keyless Entry System.>
B: ELECTRICAL SPECIFICATION
Content Terminal No. Measuring condition
Key warning switch 1 (INPUT) Battery voltage is present when inserting the key into ignition switch.
Registration connector 2 (INPUT) 0 V is present when connecting the registration connector.
Door switch 3 (INPUT) 0 V is present when any door is open.
Power supply 5 Battery voltage is constantly present.
Empty 6 —
Empty 7 —
Door lock switch (Unlock) 8 (INPUT) 0 V is present when the door lock switch is turned to unlock position.
Empty 9 —
Door lock switch (Lock) 10 (INPUT) 0 V is present when the door lock switch is turned to lock position.
Room light/Ignition switch illumina-
tion 11 (OUTPUT) •0 V is present when pressing the transmitter OPEN button.
•0 V is present when any door is open.
Turn signal light (Left) 12 (OUTPUT) Battery voltage is present when pressing the transmitter OPEN or LOCK
button.
Turn signal light (Right) 13 (OUTPUT) Battery voltage is present when pressing the transmitter OPEN or LOCK
button.
Ground 14 0 V is constantly present.
Power supply (Hazard light) 15 Battery voltage is constantly present.
Power supply 16 Battery voltage is constantly present.
Door, rear gate lock actuator (with-
out double lock) or double lock mod-
ule (with double lock)
17 (OUTPUT) Battery voltage is present when pressing the transmitter OPEN button.
Door, rear gate lock actuator (with-
out double lock) or double lock mod-
ule (with double lock)
18 (OUTPUT) Battery voltage is present when pressing the transmitter LOCK button.
SL-00036
12345678910
1112131415161718

SL-16
SECURITY AND LOCKS
Keyless Entry System
C: INSPECTION
1. SYMPTOM CHART
Symptom Repair order Reference
None of the functions of keyless entry
system operate.
1. Check the transmitter battery.
<Ref. to SL-17, CHECK TRANSMIT-
TER BATTERY, INSPECTION, Key-
less Entry System.>
2. Check the fuse.
<Ref. to SL-17, CHECK FUSE,
INSPECTION, Keyless Entry Sys-
tem.>
3. Check the keyless entry control module power
supply and ground circuit.
<Ref. to SL-17, CHECK POWER
SUPPLY AND GROUND CIRCUIT,
INSPECTION, Keyless Entry Sys-
tem.>
4. Replace the keyless entry control module. <Ref. to SL-41, Keyless Entry Control
Module.>
The transmitter cannot be registered.
1. Check the transmitter battery.
<Ref. to SL-17, CHECK TRANSMIT-
TER BATTERY, INSPECTION, Key-
less Entry System.>
2. Check the registration connector circuit.
<Ref. to SL-18, CHECK REGISTRA-
TION CONNECTOR CIRCUIT,
INSPECTION, Keyless Entry Sys-
tem.>
3. Replace the keyless entry control module. <Ref. to SL-41, Keyless Entry Control
Module.>
The door lock or unlock does not
operate.
N
O
TE:
If the door lock control system does
not operate when using the door lock
switch, check the door lock control
system. <Ref. to SL-10, INSPEC-
TION, INSPECTION, Door Lock Con-
trol System.>
1. Check the transmitter battery.
<Ref. to SL-17, CHECK TRANSMIT-
TER BATTERY, INSPECTION, Key-
less Entry System.>
2. Check the key warning switch.
<Ref. to SL-19, CHECK KEY WARN-
ING SWITCH, INSPECTION, Keyless
Entry System.>
3. Check the door switch.
<Ref. to SL-18, CHECK DOOR
SWITCH, INSPECTION, Keyless
Entry System.>
4. Check output signal to double lock module.
(with double lock)
<Ref. to SL-21, CHECK OUTPUT
SIGNAL TO DOUBLE LOCK MOD-
ULE, INSPECTION, Keyless Entry
System.>
5. Replace the keyless entry control module. <Ref. to SL-41, Keyless Entry Control
Module.>
The hazard light does not operate.
1. Check the hazard light operation.
<Ref. to SL-20, CHECK HAZARD
LIGHT OPERATION, INSPECTION,
Keyless Entry System.>
2. Replace the keyless entry control module. <Ref. to SL-41, Keyless Entry Control
Module.>
The room light and ignition switch illu-
mination operation does not activate.
1. Check the room light operation.
<Ref. to SL-20, CHECK ROOM
LIGHT OPERATION, INSPECTION,
Keyless Entry System.>
2. Check the ignition switch illumination circuit.
<Ref. to SL-21, CHECK IGNITION
SWITCH ILLUMINATION CIRCUIT,
INSPECTION, Keyless Entry Sys-
tem.>
3. Replace the keyless entry control module.
(without double lock)
<Ref. to SL-41, Keyless Entry Control
Module.>
4. Replace the double lock module. (with double
lock)
<Ref. to SL-42, Double Lock Mod-
ule.>

SL-17
SECURITY AND LOCKS
Keyless Entry System
2. CHECK TRANSMITTER BATTERY
3. CHECK FUSE
4. CHECK POWER SUPPLY AND GROUND CIRCUIT
Step Check Yes No
1 CHECK TRANSMITTER BATTERY.
1)Remove the battery from transmitter. <Ref.
to SL-43, REMOVAL, Keyless Transmitter.>
2)Check the battery voltage. <Ref. to SL-43,
INSPECTION, Keyless Transmitter.>
Is the voltage more than 2 V? Further inspection
is necessary, refer
to “SYMPTOM
CHART”. <Ref. to
SL-16, SYMP-
TOM CHART,
INSPECTION,
Keyless Entry Sys-
tem.>
Replace the trans-
mitter battery.
Step Check Yes No
1 CHECK FUSE.
Remove and visually check the fuse No. 2 (in
the main fuse box), No. 3 (in the fuse and relay
box) and SBF-6 (in the main fuse box).
Is the fuse blown out? Replace the fuse
with a new one.
Check the power
supply and ground
circuit. <Ref. to
SL-17, CHECK
POWER SUPPLY
AND GROUND
CIRCUIT,
INSPECTION,
Keyless Entry Sys-
tem.>
Step Check Yes No
1 CHECK POWER SUPPLY.
1)Disconnect the keyless entry control module
harness connector.
2)Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(B176) No. 5, No. 16 (+) —Chassis
ground (–):
Is the voltage more than 10 V? Go to step 2. Check the harness
for open circuits or
shorts between
keyless entry con-
trol module and
fuse.
2 CHECK GROUND CIRCUIT.
Measure the resistance between harness con-
nector terminal and chassis ground.
Connector & terminal
(B176) No. 6, No. 14 —Chassis ground:
Is the resistance less than 10
Ω?
The power supply
and ground circuit
are OK.
Repair the har-
ness.

SL-18
SECURITY AND LOCKS
Keyless Entry System
5. CHECK REGISTRATION CONNECTOR CIRCUIT
6. CHECK DOOR SWITCH
Step Check Yes No
1 REGISTRATION CONNECTOR INPUT VOLT-
AGE INSPECTION
1)Disconnect the registration connector.
2)Measure the voltage between keyless entry
control module harness connector and chassis
ground.
Connector & terminal
(B176) No. 2 (+) —Chassis ground (
−
−−
−
):
Is the voltage more than 10 V? Go to step 2. Repair the har-
ness, and/or con-
nector.
2 REGISTRATION CONNECTOR INPUT VOLT-
AGE INSPECTION
1)Connect the registration connector.
2)Measure the voltage between keyless entry
control module harness connector and chassis
ground.
Connector & terminal
(B176) No. 2 (+) —Chassis ground (
−
−−
−
):
Is the voltage 0 V? Registration con-
nector circuit is
OK.
Repair the har-
ness, and/or con-
nector.
Step Check Yes No
1 CHECK DOOR SWITCH CIRCUIT.
Measure the voltage between keyless entry
control module harness connector terminal
and chassis ground.
Connector & terminal
Without double lock:
(B176) No. 3 (+) —Chassis ground (–):
With double lock:
(B176) No. 3 (+) —Chassis ground (–):
(B325) No. 17 (+) —Chassis ground (–):
Is the voltage 0 V when any
one of doors or rear gate is
opened?
Go to step 2. Go to step 3.
2 CHECK DOOR SWITCH CIRCUIT.
Measure the voltage between keyless entry
control module harness connector terminal
and chassis ground.
Connector & terminal
Without double lock:
(B176) No. 3 (+) —Chassis ground (–):
With double lock
(B176) No. 3 (+) —Chassis ground (–):
(B325) No. 17 (+) —Chassis ground (–):
Is the voltage more than 10 V
when all doors and rear gate
are closed?
The door switch is
OK.
Go to step 3.
3 CHECK DOOR SWITCH.
1)Disconnect the door switch harness connec-
tor.
2)Measure the resistance between door switch
terminals.
Terminal
Door switch No. 1 —No. 3:
Rear gate latch switch No. 1 —No. 2:
Is the resistance more than 1
MΩwhen door switch is
pushed?
Go to step 4. Replace the door
switch.