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SC-8
BATTERY
Revision: 2004 November 2004 FX35/FX45
8. Press “ENTER”, then test output code is displayed. Record the
test output code on the repair order.
9. Toggle back to the “DIAGNOSTIC SCREEN” for test results.
NOTE:
If necessary, the tester will ask the user to determine if the
battery has just been charged. Choose the appropriate selec-
tion by pressing the up or down arrow button and then press
the “ENTER” button to make the selection.
When testing a battery installed in a vehicle that has recently
been driven, select “BEFORE CHARGE”.
If the battery has just been slow charged due to a “CHARGE
& RETEST” decision by the tester, and the tester asks the user “BEFORE CHARGE/AFTER
CHARGE”, select “AFTER CHARGE”.
DIAGNOSTIC RESULT ITEM CHART
SEL576X
Diagnostic item Service procedure
GOOD BATTERYBattery is OK, go to “Trouble Diagnosis”,“STARTING SYSTEM”. Refer to SC-13, "
Trouble Diagnosis
with Battery/Starting/Charging System Tester" .
REPLACE BATTERYReplace battery.
Before replacing battery, clean the battery cable clamps and battery posts. Perform battery test
again with Battery/Starting/Charging system tester. If second test result is “Replace Battery”, then
do so. Perform battery test again to confirm repair.
BAD CELL-REPLACEReplace the battery. Perform battery test again with Battery/Starting/Charging system tester to con-
firm repair.
GOOD-RECHARGE Perform the slow battery charging procedure. (Initial rate of charge is 10A for 12 hours.)
CHARGE & RETESTPerform the slow battery charging. (Initial rate of charge is 10A for 12 hours.)
Perform battery test again with Battery/Starting/Charging system tester to confirm repair.
NOTE:
If the tester asks the user “BEFORE CHARGE/AFTER CHARGE”, select “AFTER CHARGE”.
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BATTERY
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Revision: 2004 November 2004 FX35/FX45
Removal and Installation AKS0079B
REMOVAL
1. Remove hoodledge cover (right).
2. Disconnect negative battery cable and positive battery cable.
CAUTION:
When disconnecting, disconnect negative battery cable
first.
3. Remove battery fix frame mounting nuts and battery fix frame.
4. Remove relay box from bracket.
5. Remove battery.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
When connecting, connect positive battery cable first.
PKIA2805E
PKIA2806E
Battery fix frame mounting nut
: 3.9 N·m (0.4 kg-m, 35 in-lb)
Battery terminal nut
: 5.4 N·m (0.55 kg-m, 48 in-lb)
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SC-10
STARTING SYSTEM
Revision: 2004 November 2004 FX35/FX45
STARTING SYSTEMPFP:23300
System Description AKS0079C
Power is supplied at all times:
through 40A fusible link (letter F, located in the fuse and fusible link box)
to ignition switch terminal 1
through 15A fuse (No. 78, located in the IPDM E/R)
to CPU of IPDM E/R
through 10A fuse (No. 71, located in the IPDM E/R)
to CPU of IPDM E/R.
When the selector lever in the P or N position, power is supplied:
from TCM, and through A/T assembly terminal 9
to IPDM E/R terminal 53.
Ground is supplied:
to IPDM E/R terminals 38, 50 and 60
from body grounds E21, E50 and E51.
With the ignition switch in the START position, and provided that the IPDM E/R receives a starter relay ON sig-
nal from the CAN lines, the IPDM E/R is energized and power is supplied:
from ignition switch terminal 5
to IPDM E/R terminal 4 and
through IPDM E/R terminal 3
to starter motor terminal 1.
The starter motor plunger closes and provides a closed circuit between the battery and starter motor. The
starter motor is grounded to the engine block. With power and ground supplied, cranking occurs and the
engine starts.
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STARTING SYSTEM
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Revision: 2004 November 2004 FX35/FX45
Wiring Diagram — START —AKS0079D
VK45DE ENGINE MODELS
TKWM1275E
Page 4101 of 4449
SC-12
STARTING SYSTEM
Revision: 2004 November 2004 FX35/FX45
VQ35DE ENGINE MODELS
TKWM1276E
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STARTING SYSTEM
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Revision: 2004 November 2004 FX35/FX45
Trouble Diagnosis with Battery/Starting/Charging System TesterAKS0079E
NOTE:
To ensure a complete and thorough diagnosis, the battery, starter and alternator test segments must be done
as a set from start to finish.
1. Turn off all loads on the vehicle electrical system.
2. Perform battery test with Battery/Starting/Charging system
tester. Refer to SC-6, "
Trouble Diagnosis with Battery/Starting/
Charging System Tester" .
3. Press “ENTER” to begin the starting system test.
4. Start the engine.
5. Diagnosis result is displayed on the tester. Refer to SC-13,
"DIAGNOSTIC RESULT ITEM CHART" .
NOTE:
If the starter performs normally but the engine does not start,
perform engine diagnosis.
For intermittent “NO CRANK” or “NO STARTER OPERA-
TION” incidents, refer to SC-16, "
DIAGNOSTIC PROCE-
DURE 2" .
DIAGNOSTIC RESULT ITEM CHART
SEL408X
SEL409X
SEL410X
Diagnostic item Service procedure
CRANKING VOLTAGE NORMAL Go to SC-14, "
WORK FLOW" .
CRANKING VOLTAGE LOW Go to SC-14, "
WORK FLOW" .
CHARGE BATTERYPerform the slow battery charging procedure. (Initial rate of charge is 10A for 12 hours.) Per-
form battery test again with Battery/Starting/Charging system tester. Refer toSC-6, "
Trouble
Diagnosis with Battery/Starting/Charging System Tester" .
REPLACE BATTERYBefore replacing battery, clean the battery cable clamps and battery posts. Perform battery
test again with Battery/Starting/Charging system tester. Refer to SC-6, "
Trouble Diagnosis
with Battery/Starting/Charging System Tester" . If second test result is “REPLACE BAT-
TERY”, then do so. Perform battery test again to confirm repair.
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SC-14
STARTING SYSTEM
Revision: 2004 November 2004 FX35/FX45
WORK FLOW
*1SC-6, "Trouble Diagnosis with Bat-
tery/Starting/Charging System
Te s t e r".*2SC-16, "
MINIMUM SPECIFICATION
OF CRANKING VOLTAGE REFER-
ENCING COOLANT TEMPERA-
TURE".*3SC-15, "
DIAGNOSTIC PROCE-
DURE 1".
*4SC-16, "
DIAGNOSTIC PROCE-
DURE 2".
SKIB0227E
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STARTING SYSTEM
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Revision: 2004 November 2004 FX35/FX45
DIAGNOSTIC PROCEDURE 1
Check “B” Terminal Circuit
1. CHECK POWER SUPPLY FOR STARTER MOTOR “B” TERMINAL
1. Remove fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is released.
3. Turn ignition switch OFF.
4. Make sure that the starter motor B terminal E313 terminal 2 (B)
*1 or (B/R)*2 connection is clean and tight.
5. Check voltage between starter motor B terminal E313 terminal 2
(B)
*1 or (B/R)*2 and ground using a digital circuit tester.
NOTE:
*1: VK45DE, *2: VQ35DE
OK or NG
OK >> GO TO 2.
NG >> Check harness between the battery and the starter
motor for open circuit.
2. CHECK BATTERY HARNESS CONNECTION (VOLTAGE DROP TEST)
Check voltage between starter motor B terminal E313 terminal 2
(B)
*1 or (B/R)*2 and battery positive terminal using a digital circuit
tester.
NOTE:
*1: VK45DE, *2: VQ35DE
OK or NG
OK >> GO TO 3.
NG >> Check harness between the battery and the starter
motor for poor continuity.
3. CHECK STARTER MOTOR GROUND CIRCUIT (VOLTAGE DROP TEST)
1. Turn ignition switch OFF.
2. Check voltage between starter motor case and battery negative
terminal using a digital circuit tester.
OK or NG
OK >> Starter motor “B” terminal circuit is OK. Further inspec-
tion necessary. Refer to SC-14, "
WORK FLOW" .
NG >> Check the starter motor case and ground for poor conti-
nuity. Battery voltage should exist.
PKIA2842E
When the ignition switch is in START position,
Voltage: Less than 0.5V
PKIA2370E
When the ignition switch is in START position,
Voltage: Less than 0.2V
PKIA2943E