Page 2937 of 3371
SC-16
STARTING SYSTEM
Revision: August 20072004 QX56
MINIMUM SPECIFICATION OF CRANKING VOLTAGE REFERENCING COOLANT TEMPERA-
TURE
Removal and InstallationEKS0079B
REMOVAL
1. Remove the intake manifold. Refer to EM-15, "Removal and Installation" .
2. Disconnect the starter harness connectors.
3. Remove the two starter bolts, using power tools.
4. Remove the starter.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Tighten terminal "2" nut carefully.
Engine coolant temperature Voltage V
−30°C to −20°C (−22°F to −4°F) 8.4
−19°C to −10°C (−2°F to 14°F) 8.9
−9°C to 0°C (16°F to 32°F) 9.3
More than 1°C (More than 34°F) 9.7
WKIA1388E
Terminal "2"nut : 10.8 N·m (1.1 kg-m, 8 ft-lb)
Page 2938 of 3371

CHARGING SYSTEM
SC-17
C
D
E
F
G
H
I
J
L
MA
B
SC
Revision: August 20072004 QX56
CHARGING SYSTEMPFP:23100
System DescriptionEKS0079E
The generator provides DC voltage to operate the vehicle's electrical system and to keep the battery charged.
The voltage output is controlled by the IC regulator.
Power is supplied at all times to generator terminal 4 through:
10A fuse (No. 30, located in the fuse and fusible link box).
Terminal 1 supplies power to charge the battery and operate the vehicle's electrical system. Output voltage is
controlled by the IC regulator at terminal 4 detecting the input voltage. The charging circuit is protected by the
140A fusible link (letter a , located in the fusible link box).
Ground is supplied:
to generator terminal 2
through body ground E203.
With the ignition switch in the ON or START position, power is supplied:
through 10A fuse [No. 14, located in the fuse block (J/B)]
to combination meter terminal 24 for the charge warning lamp.
Ground is supplied to terminal 13 of the combination meter through terminal 3 of the generator. With power
and ground supplied, the charge warning lamp will illuminate. When the generator is providing sufficient volt-
age with the engine running, the ground is opened and the charge warning lamp will go off.
If the charge warning lamp illuminates with the engine running, a fault is indicated.
Page 2939 of 3371
SC-18
CHARGING SYSTEM
Revision: August 20072004 QX56
Wiring Diagram — CHARGE —EKS0079F
WKWA3103E
Page 2940 of 3371

CHARGING SYSTEM
SC-19
C
D
E
F
G
H
I
J
L
MA
B
SC
Revision: August 20072004 QX56
Trouble Diagnoses with Battery/Starting/Charging System TesterEKS0079G
NOTE:
To ensure a complete and thorough diagnosis, the battery, starter and generator 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 and starting system test with Battery/Starting/
Charging system tester.
3. Press “ENTER” to begin the charging system test.
4. Start engine.
5. Press “ENTER” until “LOADS OFF REV ENGINE 5 SEC” is dis-
played.
6. Raise and hold the engine speed at 1,500 to 2,000 rpm for about
5 seconds, then return the engine to idle.
Once the increase in engine rpm is detected, press “ENTER” to
continue.
NOTE:
If after 30 seconds an increase in engine idle speed is not
detected, “RPM NOT DETECTED” will display.
Some engines may have a higher idle initially after starting,
particularly when the engine is cold. The tester may detect
this without any other action being taken. If this occurs, con-
tinue on with the testing process. The final results will not be affected.
7. The tester now checks the engine at idle and performs the
DIODE/RIPPLE check.
8. When complete, the tester will prompt you to turn on the follow-
ing electrical loads.
Heater fan set to highest speed. Do not run the A/C or wind-
shield defroster.
Headlamp high beam
Rear window defogger
NOTE:
Do not run the windshield wipers or any other cyclical loads.
9. Press “ENTER” to continue.
SEL417X
SEL418X
SEL419X
SEL420X
Page 2941 of 3371

SC-20
CHARGING SYSTEM
Revision: August 20072004 QX56
10. Raise and hold the engine speed at 1,500 to 2,000 rpm for about
5 seconds, then return the engine to idle. Once the increase in
engine rpm is detected, press “ENTER” to continue.
NOTE:
If after 30 seconds an increase in engine idle speed is not
detected, “RPM NOT DETECTED” will be displayed. Press
“ENTER” to restart the test.
11. Diagnostic result is displayed on the tester. Refer to SC-20,
"DIAGNOSTIC RESULT ITEM CHART" .
12. Press “ENTER” then test output code is displayed. Record the
test output code on the repair order.
13. Toggle back to the “DIAGNOSTIC SCREEN” for test results.
DIAGNOSTIC RESULT ITEM CHART
SEL421X
SEL422X
SEL577X
Diagnostic item Service procedure
CHARGING SYSTEM NORMAL Charging system is normal and will also show DIODE RIPPLE test result.
NO CHARGING VOLTAGE Go to SC-21, "
WORK FLOW" .
LOW CHARGING VOLTAGE Go to SC-21, "
WORK FLOW" .
HIGH CHARGING VOLTAGE Go to SC-21, "
WORK FLOW" .
DIODE RIPPLE NORMAL Diode ripple is OK and will also show CHARGING VOLTAGE test result.
EXCESS RIPPLE DETECTEDReplace the generator. Perform “DIODE RIPPLE” test again using Battery/Starting/Charging
system tester to confirm repair.
DIODE RIPPLE NOT DETECTED Go to SC-21, "
WORK FLOW" .
Page 2942 of 3371
CHARGING SYSTEM
SC-21
C
D
E
F
G
H
I
J
L
MA
B
SC
Revision: August 20072004 QX56
WORK FLOW
WKIA2109E
Page 2943 of 3371
SC-22
CHARGING SYSTEM
Revision: August 20072004 QX56
DIAGNOSTIC PROCEDURE 1
Check Terminal "3" Circuit
1. CHECK “3” TERMINAL CONNECTION
1. Turn the ignition switch OFF.
2. Check to see if “3” terminal is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair “3” terminal connection. Confirm repair by performing complete Battery/Starting/Charging
system test.
2. CHECK “3” TERMINAL CIRCUIT
1. Disconnect E205 connector from generator.
2. Apply ground to connector E205 terminal 3 (BR/W) with the igni-
tion switch in the ON position.
OK or NG
OK >> GO TO SC-21, "WORK FLOW" .
NG >> Check the following.
10A fuse [No. 14, located in fuse block (J/B)]
CHARGE lamp
Harness for open or short between combination
meter and fuse
Harness for open or short between combination meter and generator CHARGE lamp should light up.
WKIA2110E
Page 2944 of 3371

CHARGING SYSTEM
SC-23
C
D
E
F
G
H
I
J
L
MA
B
SC
Revision: August 20072004 QX56
DIAGNOSTIC PROCEDURE 2
Check Terminal "1" Circuit
1. CHECK “1” TERMINAL CONNECTION
1. Turn the ignition switch OFF.
2. Check to see if “1” terminal is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair “1” terminal connection. Confirm repair by performing complete Battery/Starting/Charging
system test.
2. CHECK GENERATOR “1” TERMINAL CIRCUIT
Check voltage between generator connector E206 terminal 1 (B/R)
and ground using a digital circuit tester.
OK or NG
OK >> GO TO 3.
NG >> Check the following.
140A fusible link (letter a , located in fusible link box)
Harness for open or short between generator and fus-
ible link
3. CHECK “1” TERMINAL CONNECTION QUALITY (VOLTAGE DROP TEST)
Check voltage between generator connector E206 terminal 1 (B/R)
and battery positive terminal using a digital circuit tester.
OK or NG
OK >> Replace the generator. Refer to SC-27, "Removal and
Installation" . Confirm repair by performing complete
Battery/Starting/Charging system test.
NG >> Check harness between the battery and the generator
for poor continuity.
DIAGNOSTIC PROCEDURE 3
Check Terminal "3" Circuit
1. CHECK “3” TERMINAL CONNECTION
1. Turn the ignition switch OFF.
2. Check to see if “3” terminal is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair “3” terminal connection. Confirm repair by performing complete Battery/Starting/Charging
system test. Battery voltage should exist.
W K I A 2111 E
With engine running
at idle and warm.: Less than 0.2V
WKIA2112E