ignition NISSAN TIIDA 2007 Service Repair Manual

WCS-22
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
Check that the following fuses and fusible link are not fusing.
Is the fuse fusing?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is
blown.
NO >> GO TO 2.
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> INSPECTION END
NO >> Repair or replace harness.
Terminal No. Signal name Fuses and fusible link No.
22
Battery power supply9 (10A)
728 (10A)
74
G (40A)
79
24 Ignition power supply 55 (10A)
Te r m i n a l s
Ignition switch position
(+)
(−) BCM
OFF ACC ON
Connector Terminal
M1822
GroundBattery
voltageBattery
voltageBattery
voltage
24Approx.
0 VApprox.
0 VBattery
voltage
M2072
Battery
voltageBattery
voltageBattery
voltage 74
79
ALMIA0188ZZ
BCM
GroundContinuity
Connector Terminal
M18 2
Ye s
M20 70
ALMIA0189ZZ

WCS-24
< COMPONENT DIAGNOSIS >
SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT
SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT
DescriptionINFOID:0000000001722932
Transmits a seat belt buckle switch signal to the combination meter.
Component Function CheckINFOID:0000000001722933
1.CHECK COMBINATION METER INPUT SIGNAL
Select “DATA MONITOR” for “METER/M&A” and check the “SEAT BELT W/L” monitor value.
>> Inspection End.
Diagnosis ProcedureINFOID:0000000001722934
1.CHECK COMBINATION METER INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between combination meter harness connector
M24 terminal 3 and ground.
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-94, "Removal
and Installation".
NO >> GO TO 2
2.CHECK SEAT BELT BUCKLE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and seat belt warning
lamp control unit connector.
3. Check continuity between combination meter harness connector
M24 (A) terminal 3 and seat belt warning lamp control unit har-
ness connector B51 (B) terminal 36.
4. Check continuity between combination meter harness connector
M24 (A) terminal 3 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair harness or connector.
3.CHECK SEAT BELT BUCKLE SWITCH CIRCUITSEAT BELT W/L
When seat belt is fastened : OFF
When seat belt is unfastened : ON
3 - Ground
When driver seat belt is fastened : Approx. 12V
When driver seat belt is unfastened : Approx. 0V
AWNIA0264ZZ
3 - 36 : Continuity should exist.
3 - Ground : Continuity should not exist.
AWNIA0265ZZ

WCS
SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT
WCS-25
< COMPONENT DIAGNOSIS >
C
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MB A
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1. Disconnect seat belt buckle switch (driver side) connector.
2. Check continuity between seat belt warning lamp control unit
harness connector B51 (A) terminal 21 and seat belt buckle
switch (driver side) harness connector B9 (B) terminal 1.
3. Check continuity between seat belt warning lamp control unit
harness connector B51 (B) terminal 21 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair harness or connector.
4.CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT
Check continuity between seat belt buckle switch (driver side) har-
ness connector B9 terminal 2 and ground.
Is the inspection result normal?
YES >> GO TO 5
NO >> Repair harness or connector.
5.CHECK SEAT BELT BUCKLE SWITCH
Perform a unit inspection for the seat belt buckle switch (driver side). Refer to WCS-25, "
Component Inspec-
tion".
Is the inspection result normal?
YES >> Replace the seat belt warning lamp control unit.
NO >> Replace the seat belt buckle switch (driver side).
Component InspectionINFOID:0000000001722935
1.CHECK SEAT BELT BUCKLE SWITCH
1. Turn ignition switch OFF.
2. Disconnect the seat belt buckle switch (driver side) connector.
3. Check continuity between terminals 1 and 2.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace the seat belt buckle switch (driver side).21 - 1 : Continuity should exist.
21 - Ground : Continuity should not exist.
AWNIA0266ZZ
2 - Ground : Continuity should exist.
AWNIA0267ZZ
1 – 2
When seat belt is
fastened: Continuity should not exist.
When seat belt is
unfastened: Continuity should exist.
AWNIA0268ZZ

WCS-26
< COMPONENT DIAGNOSIS >
KEY SWITCH SIGNAL CIRCUIT (WITH INTELLIGENT KEY)
KEY SWITCH SIGNAL CIRCUIT (WITH INTELLIGENT KEY)
DescriptionINFOID:0000000001722936
Transmits a key switch signal to the BCM.
Component Function CheckINFOID:0000000001722937
1.CHECK BCM INPUT SIGNAL
Select “DATA MONITOR” for “BCM” and check the “KEY IN SW” monitor value.
>> Inspection End.
Diagnosis ProcedureINFOID:0000000001722938
1.CHECK FUSE
Check if the key switch and ignition knob switch 10A fuse (No. 31, located in the fuse and relay box) is blown.
Is the fuse blown?
YES >> Be sure to repair the cause of malfunction before installing new fuse.
NO >> GO TO 2
2.CHECK BCM INPUT SIGNAL
Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES >> Inspection End.
NO >> GO TO 3
3.CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM and key switch and ignition knob switch con-
nectors.
2. Check continuity between BCM harness connector M18 (A) and
key switch and ignition knob switch harness connector M32 (B).
3. Check continuity between BCM harness connector M18 (A) and
ground.KEY IN SW
When key is inserted into key cylinder : ON
When key is removed from key cylinder : OFF
Te r m i n a l s
ConditionVo l ta g e
(Approx.) (+)
(−)
BCM
connectorTe r m i n a l
M18 3 GroundKey is inserted Battery voltage
Key is removed 0
AWNIA0269ZZ
AB
Continuity
Connector Terminal Connector Terminal
M183M321 Yes
A
GroundContinuity
Connector Terminal
M18 3 No
AWNIA0270ZZ

WCS
KEY SWITCH SIGNAL CIRCUIT (WITH INTELLIGENT KEY)
WCS-27
< COMPONENT DIAGNOSIS >
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Is the inspection result normal?
YES >> GO TO 4
NO >> Repair harness or connector.
4.CHECK KEY SWITCH POWER SUPPLY CIRCUIT
Check voltage between key switch and ignition knob switch harness
connector and ground.
Is the inspection result normal?
YES >> Replace key switch and ignition knob switch.
NO >> Repair harness or connector.
Component InspectionINFOID:0000000001722939
1.CHECK KEY SWITCH
1. Turn ignition switch OFF.
2. Disconnect key switch and ignition knob switch connector.
3. Check continuity between key switch and ignition knob switch
terminals 1 and 2.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace key switch and ignition knob switch.
Te r m i n a l s
Vo l ta g e
(Approx.) (+)
(−) Key switch and ignition
knob switch connector Te r m i n a l
M32 2 Ground Battery voltage
AWNIA0271ZZ
1 – 2
When key is inserted
into key cylinder: Continuity should exist.
When key is removed
from key cylinder: Continuity should not exist.
AWNIA0272ZZ

WCS
KEY SWITCH SIGNAL CIRCUIT (WITHOUT INTELLIGENT KEY)
WCS-29
< COMPONENT DIAGNOSIS >
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Is the inspection result normal?
YES >> GO TO 4
NO >> Repair harness or connector.
4.CHECK KEY SWITCH POWER SUPPLY CIRCUIT
Check voltage between key switch and key lock solenoid harness
connector and ground.
Is the inspection result normal?
YES >> Replace key switch and key lock solenoid.
NO >> Repair harness or connector.
Component InspectionINFOID:0000000001722943
1.CHECK KEY SWITCH
1. Turn ignition switch OFF.
2. Disconnect key switch and key lock solenoid connector.
3. Check continuity between key switch and key lock solenoid ter-
minals 1 and 2.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace key switch and key lock solenoid.
Te r m i n a l s
Vo l ta g e
(Approx.) (+)
(−) Key switch and key lock
solenoid Te r m i n a l
M27 2 Ground Battery voltage
AWNIA0271ZZ
1 – 2
When key is inserted
into key cylinder: Continuity should exist.
When key is removed
from key cylinder: Continuity should not exist.
AWNIA0272ZZ

WCS
COMBINATION METER
WCS-37
< ECU DIAGNOSIS >
C
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MB A
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ECU DIAGNOSIS
COMBINATION METER
Reference ValueINFOID:0000000001728308
TERMINAL LAYOUT
PHYSICAL VALUES
LKIA0698E
Te r -
mi-
nal
No.Wire
colorItemCondition
Reference value (V)
(Approx.) Ignition
switchOperation or condition
1 L CAN-H — — —
2 P CAN-L — — —
3VVehicle speed signal output
(2-pulse)ONSpeedometer operated
[When vehicle speed is approx.
40 km/h (25 MPH)] NOTE:
Maximum voltage may be 5V due to
specifications (connected units).
4OVehicle speed signal output
(8-pulse)ONSpeedometer operated
[When vehicle speed is approx.
40 km/h (25 MPH)]NOTE:
Maximum voltage may be 12V due to
specifications (connected units).
6 BR Fuel level sensor signal (+) — — Refer to MWI-29, "
Description".
7 BR Air bag signal ONAir bag warning lamp ON 4
Air bag warning lamp OFF 0
8 P O/D OFF switch ONO/D OFF switch pressed 0
O/D OFF switch released Battery voltage
9OSeat belt buckle switch (driv-
er side)ONUnfastened (ON) 0
Fastened (OFF) Battery voltage
10 SB Parking Brake switch ONParking brake applied 0
Parking brake released Battery voltage
PKIC0642E
PKIC0643E

WCS-38
< ECU DIAGNOSIS >
COMBINATION METER
11 LG Brake fluid level switch ONBrake fluid level low 0
Brake fluid level normal Battery voltage
16 VSteering switch (trip comput-
er) signalONPress the steering switch (trip
computer)0
Other than the above 5
19 V Ambient sensor signal ON —
20 BR Ambient sensor ground ON — 0
21
BGround — — 0 22
23
24 V Fuel level sensor ground (-) ON — 0
25 RAuto A/C sense signal (with
auto A/C)ON — 5V
27 G Battery power supply OFF — Battery voltage
28 SB Ignition switch ON or START ON — Battery voltage
30 G Stop lamp switch ONBrake pedal depressed Battery voltage
Brake pedal released 0
31 V A/T N-range input (with A/T) ONTransmission gear selector lever
in N positionBattery voltage
Transmission gear selector lever
other than N position0
32 W A/T P-range input (with A/T) ONTransmission gear selector lever
in P positionBattery voltage
Transmission gear selector lever
other than P position0
33 Y A/T PN output (with A/T) ONTransmission gear selector lever
in P or N position0
Transmission gear selector lever
other than P or N positionBattery voltage
35 BREngine coolant temperature
signal outputONAt idle [after warming up, approx.
80°C (176°F)]
NOTE:
The waveforms vary depending
on engine coolant temperature. Te r -
mi-
nal
No.Wire
colorItemCondition
Reference value (V)
(Approx.) Ignition
switchOperation or condition
JSNIA0014GB
SKIB3651J

WCS
COMBINATION METER
WCS-39
< ECU DIAGNOSIS >
C
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MB A
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P36 L Oil level sensor signal ON —Refer to MWI-32, "
Component Inspec-
tion (With Diesel)" or MWI-33, "Compo-
nent Inspection (Without Diesel)".
NOTE:
The measurement cannot be performed
because the signal is only input for a
moment when the ignition switch is
turned ON.
37 O Oil level sensor signal ground ON — 0
38 L Generator ONGenerator voltage low 0
Generator voltage normal Battery voltage Te r -
mi-
nal
No.Wire
colorItemCondition
Reference value (V)
(Approx.) Ignition
switchOperation or condition

WCS
COMBINATION METER
WCS-55
< ECU DIAGNOSIS >
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MB A
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DTC IndexINFOID:0000000001728311
NOTE:
“TIME” indicates the following.
 0: Indicates that a malfunction is detected at present.
 1-63: Indicates that a malfunction was detected in the past. (Displays number of ignition switch OFF → ON
cycles after malfunction is detected. Self-diagnosis result is erased when “63” is exceeded.)
Function Specifications
Speedometer
Zero indication. Tachometer
Fuel gauge
Illumination control Meter illumination Change to nighttime mode when communication is lost.
Segment LCD Odometer Freeze current indication.
Buzzer Buzzer turns off.
Warning lamp/indicator lampABS warning lamp
Lamp turns on when communication is lost. Brake warning lamp
ESP OFF indicator lamp
SLIP indicator lamp
Side and headlight indicator
Lamp turns off when communication is lost. Low water temperature indicator lamp
High water temperature warning lamp
Malfunction indicator
Power steering warning lamp
Air bag warning lamp
High beam indicator
Turn signal indicator lamp
Intelligent Key system warning lamp
CRUISE indicator lamp
Oil pressure warning lamp
Door warning lamp
Front fog lamp indicator
Rear fog lamp indicator
O/D OFF indicator lamp
Lamp turns off when disconnected. Charge warning lamp
Driver and passenger seat belt warn-
ing lamp
CONSULT-III display MalfunctionReference
page
CAN COMM CIRC
[U1000]Malfunction is detected in CAN communication.
CAUTION:
Even when there is no malfunction on CAN communication system, malfunction may be
misinterpreted when battery has low voltage (when maintaining 7 - 8 V for about 2 sec-
onds) or 10A fuse [No. 19, located in the fuse block (J/B)] is disconnected.MWI-24
VEHICLE SPEED
CIRC
[B2205]Malfunction is detected when an erroneous speed signal is input.
CAUTION:
Even when there is no malfunction on speed signal system, malfunction may be misin-
terpreted when battery has low voltage (when maintaining 7 - 8 V for about 2 seconds). MWI-25