ignition switch INFINITI FX35 2008 Service Manual

COMBINATION METERSDI-17
< SERVICE INFORMATION >
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Check voltage between combination meter harness connector M20
terminals 4, 7, 8 and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness between combination meter and fuse.
3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector.
3. Check continuity between combination meter harness connector M20 terminals 5, 6, 15 and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Vehicle Speed Signal InspectionINFOID:0000000001328445
Symptom: Speedometer and odo/trip meter indication is malfunction.
1.CHECK COMBINATION METER INPUT SIGNAL
1. Connect CONSULT-III, and start engine.
2. Select “METER /M&A” on CONSULT-III.
3. Using “SPEED METER” on “Data Moni tor”, compare the value of “Data Monitor” with speedometer pointer
of combination meter.
OK or NG
OK >> Perform self-diagnosis of ABS actuator and electric unit (control unit). Refer to BRC-26, "CON-
SULT-III Functions (ABS)".
NG >> GO TO 2.
2.CHECK UNIFIED METER AND A/ C AMP. OUTPUT SIGNAL
1. Drive vehicle at approximately 40 km/h (25 MPH).
Terminals Ignition switch position
(+) (–) OFF ACC ON
Connector Terminal
M20 4
Ground 0 V
Battery
voltage Battery
voltage
70 V0 V Battery
voltage
8 Battery
voltage Battery
voltage Battery
voltage
SKIB8525E
5 – Ground
: Continuity should exist.
6 – Ground
15 – Ground
SKIB8526E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

DI-18
< SERVICE INFORMATION >
COMBINATION METERS
2. Check voltage signal between unified meter and A/C amp. har-ness connector M56 terminal 26 and ground.
OK or NG
OK >> GO TO 3.
NG-1 >> If monitor indicates “0 V” constantly, perform the following. 1. Check each unit inputting vehicle speed signal (8 pulse), harness and connector betweeneach unit and unified meter and A/C amp.
2. Repair or replace malfunctioning part.
NG-2 >> If monitor indicates “5 V” or “12 V” constantly, replace unified meter and A/C amp. Refer to DI-32,
"Removal and Installation of Unified Meter and A/C Amp".
3.CHECK CONTINUITY BETWEEN COMBINATION METER AND UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and unified meter and A/C amp. connector.
3. Check continuity between combination meter harness connector
M20 terminal 1 and unified meter and A/C amp. harness con-
nector M56 terminal 26.
OK or NG
OK >> Replace combination meter.
NG >> Repair harness or connector.
Engine Speed Signal InspectionINFOID:0000000001328446
Symptom: Tachometer indication is malfunction.
1.CHECK COMBINATION METER INPUT SIGNAL
1. Connect CONSULT-III, and start engine.
2. Select “METER/M&A” on CONSULT-III.
3. Using “TACHO METER” on “Data Monitor”, compare the value of “Data Monitor” with tachometer pointer
of combination meter.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2.CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
Select “Data Monitor” of CONSULT-III to compare values between “ ENG SPEED” of “ENGINE” and “TACHO
METER” of “METER/M&A”.
OK or NG
OK >> Perform self-diagnosis of ECM. Refer to EC-117, "CONSULT-III Function (ENGINE)" (VQ35DE)
or EC-695, "
CONSULT-III Function (ENGINE)" (VK45DE).
NG >> Replace unified meter and A/C amp. Refer to DI-32, "
Removal and Installation of Unified Meter
and A/C Amp".
26 – Ground:
NOTE:
Maximum voltage may be 5 V due to
specifications (connected units).
SKIB0338E
PKIA1935E
1 – 26 : Continuity should exist.
SKIB0343E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

COMBINATION METERSDI-19
< SERVICE INFORMATION >
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Engine Coolant Temperature Signal InspectionINFOID:0000000001328447
Symptom: Water temperature gauge indication is malfunction.
1.CHECK COMBINATION METER INPUT SIGNAL
1. Connect CONSULT-III, and start engine.
2. Select “METER/M&A” on CONSULT-III.
3. Using “W TEMP METER” on “Data Monitor”, compare the value of “Data Monitor” with water temperature
gauge pointer of combination meter.
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2.CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
Select “Data Monitor” of CONSULT-“COOLAN TEMP/S ” of “ENGINE” and “W TEMP METER” of “METER/
M&A”.
OK or NG
OK >> Perform self-diagnosis of ECM. Refer to EC-117, "CONSULT-III Function (ENGINE)" (VQ35DE)
or EC-695, "
CONSULT-III Function (ENGINE)" (VK45DE).
NG >> Replace unified meter and A/C amp. Refer to DI-32, "
Removal and Installation of Unified Meter
and A/C Amp".
Fuel Level Sensor Signal InspectionINFOID:0000000001328448
Symptom:
 Fuel gauge indication is malfunctioning.
 Low-fuel warning lamp indication is irregular.
NOTE:
The following symptoms are not malfunctions.
Fuel gauge Depending on vehicle posture or driving circumstance, the fuel level in the tank varies, and the pointer may
fluctuate.
 If the vehicle is fueled with the ignition switch ON, the pointer will move slowly.
Low-fuel warning lamp
 Depending on vehicle posture or driving circumstance, t he fuel in the tank flows and the warning lamp ON
timing may change.
1.CHECK COMBINATION METER INPUT SIGNAL
1. Select “METER A/C AMP” on CONSULT-III.
2. Using “FUEL METER” on “Data Monitor”, compare t he value of “Data Monitor” with fuel gauge pointer of
combination meter.
OK or NG
Water temperature gauge pointer Reference value of data monitor [ °C ( °F)]
Hot Approx. 130 (266)
Middle Approx. 70 - 105 (158 - 221) Cold Approx. 50 (122)
Fuel gauge pointer Reference value of data monitor [lit.] Full Approx. 86
Three quarters Approx. 70 Half Approx. 48
A quarter Approx. 25 Empty Approx. 9
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DI-20
< SERVICE INFORMATION >
COMBINATION METERS
OK >> GO TO 2.
NG >> Replace combination meter.
2.CHECK FUEL LEVEL SENSOR (SUB) CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector and fuel level sensor unit (sub) connector.
3. Check continuity between unified meter and A/C amp. harness
connector (A) M56 terminal 28 and fuel level sensor unit (sub)
harness connector (B) B40 terminal 1.
4. Check continuity between unified meter and A/C amp. harness connector (A) M56 terminal 28 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK FUEL LEVEL SENSOR (MAIN·SUB) CIRCUIT
1. Disconnect fuel level sensor unit and fuel pump (main) connector.
2. Check continuity between fuel level sensor unit (sub) harness
connector (A) B40 terminal 2 and fuel level sensor unit and fuel
pump (main) harness connector (B) B39 terminal 2.
3. Check continuity between fuel level sensor unit (sub) harness
connector (A) B40 terminal 2 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4.CHECK FUEL LEVEL SENSOR (MAIN) CIRCUIT
1. Check continuity between fuel level sensor unit and fuel pump (main) harness connector (A) B39 terminal 5 and unified meter
and A/C amp. harness connector (B) M56 terminal 36.
2. Check continuity between fuel level sensor unit and fuel pump (main) harness connector (A) B39 terminal 5 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5.CHECK FUEL LEVEL SENSOR
Check components. Refer to DI-21, "
Electrical Component Inspection".
OK or NG
OK >> Check fuel level sensor unit installation, and c heck whether the float arm interferes or binds with
any of the internal components in the fuel tank. Repair or replace malfunctioning part, if neces-
sary.
NG >> Replace fuel level sensor unit. 28 – 1 : Continuity should exist.
28 – Ground : Continuity should not exist.
SKIB8527E
2 – 2 : Continuity should exist.
2 – Ground : Continuity should not exist.
SKIB8697E
5 – 36 : Continuity should exist.
5 – Ground : Continuity should not exist.
SKIB8528E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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COMBINATION METERSDI-21
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Fuel Gauge Pointer Fluctuates, Indicator Wrong Value or VariesINFOID:0000000001328449
1.CHECK FUEL GAUGE FLUCTUATION
Test drive vehicle to see if gauge fluctuates onl y during driving or at the instant of stopping.
Does the indication value vary only during driving or at the instant of stopping?
YES >> The pointer fluctuation may be caused by fuel level change in the fuel tank. Condition is normal.
NO >> Ask the customer about the situation when the symptom occurs in detail, and perform the trouble
diagnosis.
Fuel Gauge Does Not Move to FULL PositionINFOID:0000000001328450
1.QUESTION 1
Does it take a long time for the pointer to move to FULL position?
YES >> GO TO 2.
NO >> GO TO 3.
2.QUESTION 2
Was the vehicle fueled with the ignition switch ON?
YES >> Be sure to fuel the vehicle with the ignition swit ch OFF. Otherwise, it will take a long time to move
to FULL position because of the c haracteristic of the fuel gauge.
NO >> GO TO 3.
3.QUESTION 3
Is the vehicle parked on an incline?
YES >> Check the fuel level indication with vehicle on a level surface.
NO >> GO TO 4.
4.QUESTION 4
During driving, does the fuel gauge pointer move gradually toward EMPTY position?
YES >> Check the fuel level sensor unit. Refer to DI-21, "Electrical Component Inspection".
NO >> The float arm may interfere or bind with any of the components in the fuel tank.
Odo/Trip Meter and Illuminati on Control Switch InspectionINFOID:0000000001328451
Symptom: Illumination control does not operate.
1.CHECK ODO/TRIP METER AND I LLUMINATION CONTROL SWITCH
1. Remove odo/trip meter and illumination control switch. Refer to DI-24, "
Removal and Installation of Odo/
Trip Meter and Illumination Control Switch".
2. Check continuity odo/trip meter and illumination control switch. Refer to DI-21, "
Electrical Component
Inspection".
OK or NG
OK >> Replace combination meter.
NG >> Replace odo/trip meter and illumination control switch.
Electrical Component InspectionINFOID:0000000001328452
ODO/TRIP METER AND ILLUMINATION CONTROL SWITCH
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DI-28
< SERVICE INFORMATION >
UNIFIED METER AND A/C AMP
SELF-DIAG RESULTS
Display Item List
NOTE:
“TIME” means the following.
 0: Means detected malfunction at present. (From malfunction detection to turning ignition switch OFF)
 1 - 63: Means detected malfunction in the past . (Displays the number of ignition switch OFF → ON after
detecting malfunction. “Self Diagnostic Result” is erased when exceeding “63”.)
DATA MONITOR
Display Item List
X: Applicable
System Diagnosis mode Description
METER A/C AMP Self Diagnostic Result
Unified meter and A/C amp. checks the conditions and displays
memorized error.
CAN DIAG SUPPORT MNTR The results of transmit/receive diagnosis of CAN communication
can be read.
Data Monitor Displays unified meter and A/C amp. input data in real time.
Display item [Code] Malfunction is detected when... Reference
page
CAN COMM CIRC [U1000] When unified meter and A/C amp. is not transmitting or receiving CAN communication
signal for 2 seconds or more. DI-30
METER COMM CIRC [B2202]Malfunction is detected in communication of between combination meter and unified
meter and A/C amp.
DI-30
VEHICLE SPEED CIRC [B2205]When an erroneous speed signal is input for 1 second.
NOTE:
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). DI-32
Display item [Unit]
MAIN
SIGNALS SELECTION
FROM MENU Contents
SPEED METER [km/h] or [mph] X X Displays the value of vehicle speed signal, which is input from
ABS actuator and electric unit (control unit).
SPEED OUTPUT [km/h] or [mph] X X Displays the value of vehicle speed signal, which is transmitted
to each unit with CAN communication.
TACHO METER [rpm] X X Displays the value of engine speed signal, which is input from
ECM.
W TEMP METER [ °C] or [ °F] X X Displays the value of engine coolant temperature signal, which is
input from ECM.
FUEL METER [lit.] X X Displays the value, which processes a resistance signal from fuel
gauge.
DISTANCE [km] or [mile] X X Displays the value, which is calculated by vehicle speed signal
from ABS actuator and electric unit
(control unit), fuel gauge and
fuel consumption from ECM.
FUEL W/L [On/Off] X X Indicates [On/Off] condition of low-fuel warning lamp.
MIL [On/Off] X Indicates [On/Off] condition of malfunction indicator lamp.
AIR PRES W/L [On/Off] X Indicates [On/Off] condition of low tire pressure warning lamp.
SEAT BELT W/L [On/Off]
*1X Indicates [On/Off] condition of seat belt warning lamp.
BUZZER [On/Off] X X Indicates [On/Off] condition of buzzer.
DOOR W/L [On/Off] X Indicates [On/Off] condition of door warning lamp.
HI-BEAM IND [On/Off] X Indicates [On/Off] condition of high beam indicator.
TURN IND [On/Off] X Indicates [On/Off] condition of turn indicator.
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UNIFIED METER AND A/C AMPDI-29
< SERVICE INFORMATION >
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NOTE:
Monitored item that does not match the vehicle is deleted from the display automatically.
*1: It dose not change when fastening or unfastening the passenger seat belt.
*2: Monitor keeps indicating “off” when brake warning lamp is on by the parking brake operation or low brake fluid level.
Power Supply and Gro und Circuit InspectionINFOID:0000000001328459
1.CHECK FUSE
Check for blown unified meter and A/C amp. fuses.
OK or NG
OK >> GO TO 2.
NG >> Be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-3, "
Schematic".
2.CHECK POWER SUPPLY CIRCUIT
OIL W/L [On/Off] X Indicates [On/Off] condition of oil pressure warning lamp.
VDC/TCS IND [On/Off] X Indicates [On/Off] condition of VDC OFF indicator lamp.
ABS W/L [On/Off] X Indicates [On/Off] condition of ABS warning lamp.
SLIP IND [On/Off] X Indicates [On/Off] condition of SLIP indicator lamp.
BRAKE W/L [On/Off]
*2X Indicates [On/Off] condition of brake warning lamp.
KEY G W/L [On/Off] X Indicates [On/Off] condition of key warning lamp (green).
KEY R W/L [On/Off] X Indicates [On/Off] condition of key warning lamp (red).
KEY KNOB W/L [On/Off] X Indicates [On/Off] condition of key knob warning lamp.
M RANGE SW [On/Off] X X Indicates [On/Off] condition of manual mode range switch.
NM RANGE SW [On/Off] X X Indicates [On/Off] condition of except for manual mode range
switch.
AT SFT UP SW [On/Off] X X Indicates [On/Off] condition of A/T shift-up switch.
AT SFT DWN SW [On/Off] X X Indicates [On/Off] condition of A/T shift-down switch.
BRAKE SW [On/Off] X Indicates [On/Off] condition of brake switch (stop lamp switch).
AT-M IND [On/Off] X X Indicates [On/Off] condition of A/T manual mode indicator.
AT-M GEAR [5-1] X X Indicates [5-1] condition of A/T manual mode gear position.
P RANGE IND [On/Off] X X Indicates [On/Off] condition of A/T shift P range indicator.
R RANGE IND [On/Off] X X Indicates [On/Off] condition of A/T shift R range indicator.
N RANGE IND [On/Off] X X Indicates [On/Off] condition of A/T shift N range indicator.
D RANGE IND [On/Off] X X Indicates [On/Off] condition of A/T shift D range indicator.
AT CHECK W/L X Indicates [On/Off] cond ition of AT CHECK warning lamp.
CRUISE IND [On/Off] X Indicates [On/Off] condition of CRUISE indicator lamp.
SET IND [On/Off] X Indicates [On/Off] condition of SET indicator lamp.
CRUISE W/L [On/Off] X Indicates [On/Of f] condition of ICC warning lamp.
4WD LOCK SW [On/Off] X This item is not used for this model. “off” is always displayed.
4WD LOCK IND [On/Off] X This item is not used for this model. “off” is always displayed.
4WD W/L [On/Off] X Indicates [On/Off] condition of AWD warning lamp.
RR COMB STATE [OK/NG] X Indicates [OK/NG] condition of rear combination lamp circuit. Display item [Unit]
MAIN
SIGNALS SELECTION
FROM MENU Contents
Power source Fuse No.
Battery power supply 19 ACC power supply 10, 11
Ignition power supply 12
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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DI-30
< SERVICE INFORMATION >
UNIFIED METER AND A/C AMP
Check voltage between unified meter and A/C amp. harness con-
nector terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness between unified meter and A/C amp. and fuse.
3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
3. Check continuity between unified meter and A/C amp. harness connector M56 terminals 29, 30 and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
DTC [U1000] CAN Communication CircuitINFOID:0000000001328460
Symptom: Display “CAN COMM CIRC [U1000]” at the re sult of self-diagnosis for unified meter and A/C amp.
1.CHECK CAN COMMUNICATION
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result” of “METER/M&A”
YES >> Refer to LAN-14, "
Trouble Diagnosis Flow Chart".
NO >> Refer to GI-35, "
CONSULT-III/GST Data Link Connector (DLC) Circuit".
DTC [B2202] Meter Communication CircuitINFOID:0000000001328461
Symptom: Display “METER COMM CI RC [B2202]” at the result of self-diagnosis for unified meter and A/C
amp.
1.CHECK CONNECTOR
Check combination meter, unified meter and A/C amp. and terminals (combination meter side, unified meter
and A/C amp. side, and harness side) for looseness or bent terminals.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2.CHECK METER/GAUGES VISUALLY
Check the pointer on the meter/gauge fluctuate at the engine start.
Is the fluctuation acceptable?
YES >> GO TO 3.
Terminals Ignition switch position
(+) (–) OFF ACC ON
Connector Terminal
M56 21
Ground Battery
voltage Battery
voltage Battery
voltage
22 0 V 0 V Battery
voltage
M57 46 0 V Battery
voltage Battery
voltage
PKIB3570E
29 – Ground : Continuity should exist.
30 – Ground
SKIA5202E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

UNIFIED METER AND A/C AMPDI-31
< SERVICE INFORMATION >
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NO >> GO TO 6.
3.CHECK CONTINUITY COMM UNICATION CIRCUIT (TX: COMBINATION METER)
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and unified meter and A/C amp. connector.
3. Check continuity between combination meter harness connector M20 terminal 13 and unified meter and A/C amp. harness con-
nector M55 terminal 19.
4. Check continuity between combination meter harness connector M20 terminal 13 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4.CHECK VOLTAGE OF UNIFIED METER AND A/C AMP.
1. Connect unified meter and A/C amp. connector.
2. Turn ignition switch ON.
3. Check voltage between combination meter harness connector M20 terminal 13 and ground.
OK or NG
OK >> GO TO 5.
NG >> Replace unified meter and A/C amp. Refer to DI-32,
"Removal and Installation of Unified Meter and A/C
Amp"
5.CHECK VOLTAGE SIGNAL OF COMBINATION METER
1. Turn ignition switch OFF.
2. Connect combination meter connector.
3. Turn ignition switch ON.
4. Check voltage signal between combination meter harness con- nector M20 terminal 13 and ground.
OK or NG
OK >> Replace unified meter and A/C amp. Refer to DI-32, "Removal and Installation of Unified Meter
and A/C Amp".
NG >> Replace combination meter.
6.CHECK CONTINUITY COMM UNICATION CIRCUIT (RX: COMBINATION METER)
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and unified meter and A/C amp. connector.
13 – 19 : Continuity should exist.
13 – Ground : Continuity should not exist.
SKIA4837E
13 – Ground : Approx. 5 V
SKIA4886E
13 – Ground:
SKIA9258ESKIA3361E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

DI-32
< SERVICE INFORMATION >
UNIFIED METER AND A/C AMP
3. Check continuity between combination meter harness connectorM20 terminal 14 and unified meter and A/C amp. harness con-
nector M55 terminal 9.
4. Check continuity between combination meter harness connector M20 terminal 14 and ground.
OK or NG
OK >> GO TO 7.
NG >> Repair harness or connector.
7.CHECK VOLTAGE OF COMBINATION METER
1. Connect combination meter connector.
2. Turn ignition switch ON.
3. Check voltage between unified meter and A/C amp. harness connector M55 terminal 9 and ground.
OK or NG
OK >> GO TO 8.
NG >> Replace combination meter.
8.CHECK VOLTAGE SIGNAL OF UNIFIED METER AND A/C AMP.
1. Turn ignition switch OFF.
2. Connect unified meter and A/C amp. connector.
3. Turn ignition switch ON.
4. Check voltage signal between combination meter harness con- nector M20 terminal 14 and ground.
OK or NG
OK >> Replace combination meter.
NG >> Replace unified meter and A/C amp. Refer to DI-32, "
Removal and Installation of Unified Meter
and A/C Amp".
DTC [B2205] Vehicle Speed CircuitINFOID:0000000001328462
Symptom: Display “VEHICLE SPEED CIRC [B2205]” at the result of self-diagnosis for unified meter and A/C
amp.
Perform self-diagnosis of ABS actuator and electric unit (control unit), and repair or replace malfunctioning
parts. Refer to BRC-26, "
CONSULT-III Functions (ABS)".
Removal and Installation of Unified Meter and A/C AmpINFOID:0000000001328463
REMOVAL
14 – 9 : Continuity should exist.
14 – Ground : Continuity should not exist.
SKIA4836E
9 – Ground : Approx. 5 V
PKIB3587E
14 – Ground:
SKIA9260ESKIA3362E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C