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BL-130
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and back door closure motor connector.
3. Check continuity between BCM connector B14 terminal 58 and
back door closure motor connector D109 terminal 7.
4. Check continuity between BCM connector B14 terminal 58 and
ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
Check continuity between back door closure motor connector D109
terminal 8 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK BACK DOOR SWITCH
Check continuity between back door closure motor D109 terminals 7
and 8.
OK or NG
OK >> GO TO 5.
NG >> Replace back door closure motor.58 (L) – 7 (L) : Continuity should exist.
58 (L) – Ground : Continuity should not exist.
PIIA6226E
8 (B) – Ground : Continuity should exist.
PIIA6170E
Terminals Back door condition Continuity
78Open Yes
Close No
PIIA9934E
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5. CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Check voltage between BCM connector and ground.
OK or NG
OK >> Check condition of harness and connector.
NG >> Replace BCM.
Check Unlock SensorAIS004NG
1. UNLOCK SENSOR POWER SUPPLY INSPECTION
Check voltage between Intelligent Key unit connector and ground.
OK or NG
OK >> Unlock sensor is OK.
NG >> GO TO 2.
2. UNLOCK SENSOR CIRCUIT INSPECTION
1. Turn ignition knob LOCK position.
2. Disconnect Intelligent Key unit and front door lock assembly (driver side) connector.
3. Check continuity between Intelligent Key unit connector M34 terminal 28 (W/B) and front door lock
assembly (driver side) connector D10 terminal 4 (W).
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between Intelligent Key unit
and front door lock assembly (driver side). 58 (L) – Ground : Approx. 9V
PIIA6229E
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
M34 28 (W/B) GroundDriver side door lock is
locked5
Driver side door lock is
unlocked0
PIIA6802E
28 (W/B) – 4 (W) : Continuity should exist.
PIIA6803E
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BL-132
INTELLIGENT KEY SYSTEM
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3. UNLOCK SENSOR GROUND CIRCUIT INSPECTION
Check continuity between front door lock assembly (driver side) connector D10 terminal 5 (B) and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. INTELLIGENT KEY UNIT OUTPUT SIGNAL INSPECTION
1. Connect Intelligent Key unit connector.
2. Driver side door lock is locked.
3. Check voltage between Intelligent Key unit connector M34 terminal 28 (W/B) and ground.
OK or NG
OK >> Replace front door lock assembly (driver side)
NG >> Replace Intelligent Key unit.
Check Door Request SwitchAIS004NH
1. DOOR REQUEST SWITCH INSPECTION
With CONSULT-II
Display “DR REQ SW” (driver door), “AS REQ SW” (passenger door) and “BD/TR REQ SW” (back door) on
DATA MONITOR screen, and check if ON-OFF display is linked to door request switch operation.
OK or NG
OK >> Door request switch is OK.
NG >> GO TO 2.5 (B) – Ground : Continuity should exist.
PIIA6804E
28 (W/B) – Ground : Approx. 5V
PIIA6802E
Press door request switch. : ON
Release door request switch. : OFF
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2. DOOR REQUEST SWITCH SIGNAL INSPECTION
1. Turn ignition knob LOCK position.
2. Disconnect door request switch connector.
3. Check voltage between door request switch connector D12 (driver door), D42 (passenger door), D113
(back door) terminal 1 and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
3. DOOR REQUEST SWITCH OPERATION INSPECTION
Check continuity between door request switch D12 (driver door), D42 (passenger door), D113 (back door) ter-
minals 1 and 2.
OK or NG
OK >> GO TO 4.
NG >> Replace door request switch.
4. DOOR REQUEST SWITCH GROUND CIRCUIT INSPECTION
Check continuity between door request switch connector D12 (driver side), D42 (passenger side), D113 (back
door) terminal 2 (B) and ground.
OK or NG
OK >> Check harness connection.
NG >> Repair or replace door request switch ground circuit.Driver 1 (SB) - Ground : Approx. 5V
Passenger 1 (GY) - Ground : Approx. 5V
Back door 1 (GY) - Ground : Approx. 5V
PIIA6744E
1 - 2
Press door request
switch.: Continuity should exist.
Return door request
switch.: Continuity should not exist.
PIIA9930E
2 (B) - Ground : Continuity should exist.
PIIA6746E
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BL-134
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
5. DOOR REQUEST SWITCH CIRCUIT INSPECTION
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit connector M34 terminals 5 (driver door), 25 (passenger
door), and 29 (back door) and door request switch connector D12 (driver door), D42 (passenger door),
D113 (back door) terminal 1.
3. Check continuity between door request switch connector D12
(driver door), D42 (passenger door), D113 (back door) terminal
1 and ground.
OK or NG
OK >> Replace Intelligent Key unit.
NG >> Repair or replace harness between Intelligent Key unit and door request switch.
Check Intelligent Key Warning BuzzerAIS004NI
1. INTELLIGENT KEY WARNING BUZZER POWER SUPPLY CIRCUIT INSPECTION
1. Turn ignition knob LOCK position.
2. Disconnect Intelligent Key warning buzzer connector.
3. Check voltage between Intelligent Key warning buzzer connector D11 (driver side), D41 (passenger side)
terminal 1 (L) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace Intelligent Key warning buzzer power
supply circuit.
2. INTELLIGENT KEY WARNING BUZZER CIRCUIT INSPECTION
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit connector M34 terminal 4 and Intelligent Key warning
buzzer connector D11 (driver side), D41 (passenger side) terminal 2 (G).
3. Check continuity between Intelligent Key warning buzzer con-
nector D11 (driver side), D41 (passenger side) terminal 2 (G)
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between Intelligent Key warn-
ing buzzer and Intelligent Key unit. Driver 5 (W/L) - 1 (SB) : Continuity should exist.
Passenger 25 (W/R) - 1 (GY) : Continuity should exist.
Back door 29 (GY) - 1 (GY) : Continuity should exist.
1 - Ground : Continuity should not exist.
PIIA6747E
1 (L) - Ground : Battery voltage
PIIA6748E
4 (LG) - 2 (G) : Continuity should exist.
2 (G) - Ground : Continuity should not exist.
PIIA6749E
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3. INTELLIGENT KEY WARNING BUZZER OPERATION INSPECTION
Connect battery power supply to Intelligent Key warning buzzer connector D11 (driver side), D41 (passenger
side) terminals 1 and 2, and check the operation.
OK or NG
OK >> Intelligent Key warning buzzer is OK.
NG >> Replace Intelligent Key warning buzzer
Check Outside Key AntennaAIS004NJ
1. OUTSIDE KEY ANTENNA POWER SUPPLY INSPECTION
Push each door request switch, and use an oscilloscope to check voltage waveform of harness between Intel-
ligent Key unit connector M34 terminals 17 (back door), 19 (driver and rear LH door), and 37 (passenger and
rear RH door) and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.1 (BAT+) - 2 (BAT-) : the buzzer sounds
PIIA6750E
Terminal (Wire color)
ConditionSignal
(Reference value)
(+) (-)
Back door:
17 (OR/L)
GroundPush each
door request
switch Driver, rear LH:
19 (SB)
Passenger,
rear RH
37 (G)
MIIB0375ESIIA1910J
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BL-136
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
2. OUTSIDE KEY ANTENNA OPERATION INSPECTION
1. Disconnect each outside key antenna connector.
2. Check the following.
–Check continuity between door mirror (outside key antenna) connector D2 (driver side), D32 (passenger
side) terminals 6 and 7
–Check continuity between outside key antenna D62 (rear door LH), D82 (rear door RH), D116 (back door)
terminals 1 and 2
OK or NG
OK >> GO TO 3.
NG >> Replace outside key antenna.Driver side, Passenger side
6 - 7 : Continuity should exist.
Back door, Rear door
1 - 2 : Continuity should exist.
PIIA9931E
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3. OUTSIDE KEY ANTENNA CIRCUIT INSPECTION
1. Disconnect Intelligent Key unit connector.
2. Check continuity between each outside key antenna connector D2 (driver side), D32 (passenger side),
D62 (rear door LH), D82 (rear door RH), D116 (back door) terminals 1, 2, 6, 7 and Intelligent Key unit con-
nector M34 terminals 17, 18, 19, 20, 37, and 38.
3. Check continuity between each out side key antenna connector
terminals 1, 2, 6, 7 and ground.
OK or NG
OK >> Replace Intelligent Key unit.
NG >> Replace harness between outside key antenna and Intelligent Key unit. Back door1 (L/B) - 17 (OR/L): Continuity should exist.
2 (W/B) - 18 (PU/R): Continuity should exist.
Driver side7 (BR/W) - 19 (SB): Continuity should exist.
6 (R/Y) - 20 (R/G): Continuity should exist.
Passenger side7 (G/Y) - 37 (G): Continuity should exist.
6 (L/Y) - 38 (PU/W): Continuity should exist.
Rear door LH1 (G/Y) - 19 (SB): Continuity should exist.
2 (PU/W) - 20 (R/G): Continuity should exist.
Rear door RH1 (G/Y) - 37 (G): Continuity should exist.
2 (PU/W) - 38 (PU/W): Continuity should exist.
Back door1 (L/B) - Ground: Continuity should not exist.
2 (W/B) - Ground: Continuity should not exist.
Rear door
(LH, RH)1 (G/Y) - Ground: Continuity should not exist.
2 (PU/W) - Ground: Continuity should not exist.
Driver side7 (BR/W) - Ground: Continuity should not exist.
6 (R/Y) - Ground: Continuity should not exist.
Passenger
side7 (G/Y) - Ground: Continuity should not exist.
6 (L/Y) - Ground: Continuity should not exist.
PIIA9932E