BCM (BODY CONTROL MODULE)
BCS-15
< SERVICE INFORMATION >
C
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BCS
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*1: With Intelligent Key
*2: Hatchback without Intelligent Key
*3: Sedan without Intelligent Key
*4: Hatchback
*5: Sedan
BCM Power Supply and Ground Circuit InspectionINFOID:0000000001704589
1.CHECK FUSES AND FUSIBLE LINK
• Check 40A fusible link (letter g , located in the fuse and fusible link box).
• Check 10A fuses [No. 6, 8 and 20, located in the fuse block (J/B)].
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
3 .
2.CHECK BCM POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connectors and ground.
OK or NG
66 GFront door lock actua-
tor RH, rear door lock
actuators LH/RH (un-
lock)Output OFFOFF (neutral) 0V
ON (unlock) Battery voltage
67 B Ground Input ON — 0V
68 LPower window power
supply (RAP)Output —Ignition switch ON Battery voltage
Within 45 seconds after igni-
tion switch OFFBattery voltage
More than 45 seconds after ig-
nition switch OFF0V
When front door LH or RH is
open or power window timer
operates0V
69 P Battery power supply Output OFF — Battery voltage
70 Y Battery power supply Input OFF — Battery voltage Te r m i n a lWire
colorSignal nameSignal
input/
outputMeasuring condition
Reference value or waveform
(Approx.) Ignition
switchOperation or condition
ConnectorTe r m i n a l s
Power
sourceConditionVoltage (V) (Ap-
prox.)
(+) (-)
M1811 GroundACC
power
supplyIgnition
switch
ACC or
ONBattery voltage
38 GroundIgnition
power
supplyIgnition
switch ON
or STARTBattery voltage
M2057 GroundBattery
power
supplyIgnition
switch
OFFBattery voltage
70 GroundBattery
power
supplyIgnition
switch
OFFBattery voltage
LIIA2415E
BL-22
< SERVICE INFORMATION >
POWER DOOR LOCK SYSTEM
POWER DOOR LOCK SYSTEM
Component Parts and Harness Connector LocationINFOID:0000000001703953
System DescriptionINFOID:0000000001703954
Power is supplied at all times
• through 40A fusible link (letter g , located in the fuse and fusible link box)
LIIA2593E
1. BCM M18, M19, M20
(view with glove box removed)2. Intelligent Key unit M52
(if equipped)3. Front door key cylinder switch LH D14
4. Front door switch LH B8, RH B108 5. Front door lock actuator LH D3, RH D114 6. Rear door switch LH B6, RH B116
7. Rear door lock actuator LH D205,
RH D3058. Key switch and ignition knob switch M73
(with Intelligent Key)9. Key switch and key lock solenoid M27
(without Intelligent key)
10. Main power window and door lock/
unlock switch D7, D8
Power window and door lock/unlock
switch RH D10511. Fuse block (with Intelligent Key)
(view with instrument panel LH removed)12. Passenger select unlock relay M2
(with Intelligent Key)
13. Back door lock assembly (back door
switch) D405 (hatchback view with
back door open)
POWER DOOR LOCK SYSTEM
BL-23
< SERVICE INFORMATION >
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• to BCM terminal 70
• through 10A fuse [No. 8, located in the fuse block (J/B)]
• to BCM terminal 57
• through 10A fuse [No. 14, located in the fuse block (J/B)]
• to key switch terminal 2 (without Intelligent Key system)
• through 10A fuse [No. 31, located in the fuse block (J/B)]
• to key switch and ignition knob switch terminals 2 and 4 (with Intelligent Key system).
When key switch is ON (key is inserted in ignition key cylinder), power is supplied
• through key switch terminal 1 (without Intelligent Key system) or key switch and ignition knob terminal 1 (with
Intelligent Key system)
• to BCM terminal 37.
Ground is supplied
• to BCM terminal 67
• through body grounds M57 and M61.
LOCK OPERATION
When the door is locked with main power window and door lock/unlock switch, ground is supplied
• to BCM terminal 45
• through main power window and door lock and unlock switch terminals 17 and 18
• through body grounds M57 and M61.
When the door is locked with power window and door lock/unlock switch RH, ground is supplied
• to BCM terminal 45
• through power window and door lock and unlock switch RH terminals 1 and 3
• through body grounds M57 and M61.
When the door is locked with front door key cylinder switch LH, ground is supplied
• to BCM terminal 8
• through front door key cylinder switch LH terminals 1 and 2
• through body grounds M57 and M61.
UNLOCK OPERATION
When the door is unlocked with main power window and door lock/unlock switch, ground is supplied
• to BCM terminal 46
• through main power window and door lock/unlock switch terminals 6 and 17
• through body grounds M57 and M61.
When the door is unlocked with power window and door lock/unlock switch RH, ground is supplied
• to BCM terminal 46
• through power window and door lock and unlock switch RH terminals 2 and 3
• through body grounds M57 and M61.
When the door is unlocked with front door key cylinder switch LH, ground is supplied
• to BCM terminal 7
• through front door key cylinder switch LH terminals 2 and 3
• through body grounds M57 and M61.
When the front door switch LH is ON (door is OPEN), ground is supplied
• to BCM terminal 47
• through front door switch LH terminal 2
• through front door switch LH case ground.
When the front door switch RH is ON (door is OPEN), ground is supplied
• to BCM terminal 12
• through front door switch RH terminal 2
• through front door switch RH case ground.
When the rear door switch LH is ON (door is OPEN), ground is supplied
• to BCM terminal 48
• through rear door switch LH terminal 1
• through rear door switch LH case ground.
When the rear door switch RH is ON (door is OPEN), ground is supplied
• to BCM terminal 13
• through rear door switch RH terminal 1
• through rear door switch RH case ground.
When the back door switch (hatchback) is ON (back door is OPEN), ground is supplied
• to BCM terminal 43
• through back door switch terminals 3 and 4
• through body grounds B117, B132 and D402.
BL-42
< SERVICE INFORMATION >
POWER DOOR LOCK SYSTEM
OK or NG
OK >> Check the following.
• 10A fuse (No. 31, located in fuse and fusible link
block)
• Harness for open or short between key switch and ignition knob switch and fuse
• Harness for open or short between BCM and key switch and ignition knob switch
NG >> Replace key switch and ignition knob switch.
3.CHECK KEY SWITCH (WITHOUT INTELLIGENT KEY)
1. Turn ignition switch OFF.
2. Disconnect key switch and key lock solenoid connector.
3. Check key switch.
OK or NG
OK >> Check the following.
• 10A fuse [No. 14, located in fuse block (J/B)]
• Harness for open or short between key switch and
fuse
• Harness for open or short between BCM and key
switch
NG >> Replace key switch and key lock solenoid.
Door Lock and Unlock Switch CheckINFOID:0000000001703968
1.CHECK DOOR LOCK AND UNLOCK INPUT SIGNAL
With CONSULT-III
Check door lock and unlock switch (“CDL LOCK SW” and “CDL UNLOCK SW”) in DATA MONITOR mode with
CONSULT-III.
Without CONSULT-III
Check voltage between BCM connector and ground
Te r m i n a l
Condition Continuity
Key switch and ignition knob
switch
12KeyInserted Yes
Removed No
PIIB6411E
Terminals Condition Continuity
1 – 2Key is inserted. Yes
Key is removed. No
PIIB6411E
Test item Condition
CDL LOCK SWDoor lock and unlock switch is turned to LOCK : ON
Other than above : OFF
CDL UNLOCK SWDoor lock and unlock switch is turned to UNLOCK : ON
Other than above : OFF
REMOTE KEYLESS ENTRY SYSTEM
BL-51
< SERVICE INFORMATION >
C
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REMOTE KEYLESS ENTRY SYSTEM
Component Parts and Harness Connector LocationINFOID:0000000001703973
System DescriptionINFOID:0000000001703974
INPUTS
Power is supplied at all times
• through 40A fusible link (letter g , located in the fuse and fusible link box)
• to BCM terminal 70
• through 10A fuse [No. 8, located in the fuse block (J/B)]
• to BCM terminal 57.
LIIA2594E
1. BCM M18, M19, M20
(view with glove box removed)2. Remote keyless entry receiver M23 3. Horn relay H-1
(front of battery)
4. IPDM E/R E46, E48 5. Front door switch LH B8, RH B108 6. Rear door switch LH B6, RH B116
7. Back door lock assembly (back door
switch) D405 (hatchback view with
back door open)8. Key switch and key lock solenoid
M279. Horn (low) E18, E20
10. Horn (high) E21, E22
BL-52
< SERVICE INFORMATION >
REMOTE KEYLESS ENTRY SYSTEM
When the key switch is ON (key is inserted in ignition key cylinder), power is supplied
• through 10A fuse [No. 14, located in the fuse block (J/B)]
• through key switch terminals 2 and 1
• to BCM terminal 37.
When the ignition switch is ACC or ON, power is supplied
• through 10A fuse [No. 20, located in the fuse block (J/B)]
• to BCM terminal 11.
Ground is supplied
• to BCM terminal 67
• through body grounds M57 and M61.
When the front door switch LH is ON (door is OPEN), ground is supplied
• to BCM terminal 47
• through front door switch LH terminal 2
• through front door switch LH case ground.
When the front door switch RH is ON (door is OPEN), ground is supplied
• to BCM terminal 12
• through front door switch RH terminal 2
• through front door switch RH case ground.
When the rear door switch LH is ON (door is OPEN), ground is supplied
• to BCM terminal 48
• through rear door switch LH terminal 1
• through rear door switch LH case ground.
When the rear door switch RH is ON (door is OPEN), ground is supplied
• to BCM meter terminal 13
• through rear door switch RH terminal 1
• through rear door switch RH case ground.
When the back door lock assembly (back door switch) (hatchback) is ON (back door is OPEN), ground is sup-
plied
• to BCM terminal 43
• through back door lock assembly (back door switch) terminals 3 and 4
• through body grounds B117, B132 and D402.
Keyfob signal is inputted to BCM from remote keyless entry receiver.
The remote keyless entry system controls operation of the
• power door lock
• hazard reminder
• auto door lock
• panic alarm
• room lamp
OPERATED PROCEDURE
Power Door Lock Operation
BCM receives a LOCK signal from keyfob. BCM locks all doors with input of LOCK signal from keyfob.
BCM receives a UNLOCK signal from keyfob. BCM unlocks all doors with input of UNLOCK signal from key-
fob.
Hazard and Horn Reminder
When the doors are locked or unlocked by keyfob, power is supplied to sound horns and flash hazard warning
lamps as follows
• LOCK operation: 3 or 4 mode (lamps flash twice)
• UNLOCK operation: 2 or 4 mode (lamps flash once)
• Horns sound once with LOCK function when this feature is set ON.
The hazard reminder has modes 1, 2, 3 or 4. The horn reminder can be turned ON/OFF with any LOCK mode.
Operating function of hazard reminder
Hazard and horn reminders do not operate if any door switch is ON (any door is OPEN).
How to change hazard and horn reminder modes
Mode 1 Mode 2 Mode 3 Mode 4
Keyfob operation Lock Unlock Lock Unlock Lock Unlock Lock Unlock
Hazard warning lamp
flash— — — Twice Once — Once Twice
Horns sound (ON/OFF) ON: once — ON: once — ON: once — ON: once —
BL-62
< SERVICE INFORMATION >
REMOTE KEYLESS ENTRY SYSTEM
Check keyfob function using Remote Keyless Entry Tester J-43241.
OK or NG
OK >> Keyfob is OK.
NG1 >> (Without CONSULT-III) Replace keyfob.
NG2 >> (With CONSULT-III) More testing is needed. Perform BL-68, "
Remote Keyless Entry Receiver
Check".
ACC Switch CheckINFOID:0000000001703985
1.CHECK ACC SWITCH
With CONSULT-III
Check ACC switch (“ACC ON SW”) in “DATA MONITOR” mode with CONSULT-III.
Without CONSULT-III
Check voltage between BCM connector and ground.
OK or NG
OK >> ACC switch is OK.
NG >> Check the following.
• 10A fuse [No. 20, located in fuse block (J/B)]
• Harness for open or short between BCM and fuse.
Door Switch Check (Hatchback)INFOID:0000000001703986
1.CHECK DOOR SWITCHES INPUT SIGNAL
With CONSULT-III
Check door switches ("DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RL", "DOOR SW-RR", "BACK DOOR
SW") in DATA MONITOR mode with CONSULT–III. Refer to BL-36, "
CONSULT-III Function (BCM)" .
• When doors are open:
LEL946A
Monitor item Condition
ACC ON SWIgnition switch position is ACC or ON : ON
Ignition switch position is OFF : OFF
Te r m i n a l s
Ignition switch
conditionVoltage (V)
(Approx.) (+)
(–)
BCM connector Terminal
M18 11 GroundACC or ON Battery voltage
OFF 0
PIIB6453E
REMOTE KEYLESS ENTRY SYSTEM
BL-67
< SERVICE INFORMATION >
C
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OK or NG
OK >> Key switch circuit is OK.
NG >> GO TO 2.
2.CHECK KEY SWITCH
1. Turn ignition switch OFF.
2. Disconnect key switch and key lock solenoid connector.
3. Check key switch.
OK or NG
OK >> Check the following.
• 10A fuse [No. 14, located in fuse block (J/B)]
• Harness for open or short between key switch and
fuse
• Harness for open or short between BCM and key
switch
NG >> Replace key switch and key lock solenoid.
Hazard Function CheckINFOID:0000000001703989
1.CHECK HAZARD WARNING LAMP
Does hazard warning lamp flash with hazard switch?
OK or NG
OK >> Hazard warning lamp circuit is OK.
NG >> Check hazard circuit. Refer to LT- 4 8
.
Horn Function CheckINFOID:0000000001703990
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-III, then perform the trouble diagnosis of
malfunction system indicated “SELF-DIAG RESULTS” of “BCM”. Refer to BCS-17, "
CAN Communication
Inspection Using CONSULT-III (Self-Diagnosis)" .
1.CHECK HORN FUNCTION
Does horn sound with horn switch?
OK or NG
OK >> GO TO 2.
NG >> Check horn circuit. Refer to WW-37
.
2.CHECK IPDM E/R INPUT SIGNAL
Check voltage between IPDM E/R connector and ground.
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
( + ) ( – )
M18 37 GroundKey is inserted. Battery voltage
Key is removed. 0
LIIA0567E
Terminals Condition Continuity
1 – 2Key is inserted. Yes
Key is removed. No
PIIB6411E