2005 INFINITI QX4 Factory Service Manual

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INFINITI QX4 2005  Factory Service Manual EC-626Revision: October 2005
IGNITION SIGNAL
2005 QX56
3. CHECK OVERALL FUNCTION
 Without CONSULT-II
1. Let engine idle.
2. Read the voltage signal between ECM terminals 46, 60, 61, 62,
65, 79, 80, 81

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INFINITI QX4 2005  Factory Service Manual IGNITION SIGNAL
EC-627
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5. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.

Page 1819 of 3419

INFINITI QX4 2005  Factory Service Manual EC-628Revision: October 2005
IGNITION SIGNAL
2005 QX56
8. CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between condenser terminal 2 and gr

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INFINITI QX4 2005  Factory Service Manual IGNITION SIGNAL
EC-629
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12. CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity betw

Page 1821 of 3419

INFINITI QX4 2005  Factory Service Manual EC-630Revision: October 2005
IGNITION SIGNAL
2005 QX56
7. Remove fuel pump fuse in fuse block No. 1 to release fuel pres-
sure.
NOTE:
Do not use CONSULT-II to release fuel pressure, or fuel pres-
sure

Page 1822 of 3419

INFINITI QX4 2005  Factory Service Manual INJECTOR CIRCUIT
EC-631
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INJECTOR CIRCUITPFP:16600
Component DescriptionUBS00L1F
The fuel injector is a small, precise solenoid valve. When the

Page 1823 of 3419

INFINITI QX4 2005  Factory Service Manual EC-632Revision: October 2005
INJECTOR CIRCUIT
2005 QX56
Wiring DiagramUBS00L1H
BBWA1713E

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INFINITI QX4 2005  Factory Service Manual INJECTOR CIRCUIT
EC-633
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Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by