Infiniti I35 (A33). Manual — part 170
SEF348N
I
When measuring ECM signals with a circuit tester, never
allow the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.
I
Do not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the
ECM’s transistor. Use a ground other than the ECM
terminals, such as the ground.
SEC893C
I
B1 indicates the bank 1 and B2 indicates the bank 2 as
shown in the figure.
Wiring Diagrams and Trouble Diagnosis
NHEC0006
When you read Wiring diagrams, refer to the following:
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GI-11, “HOW TO READ WIRING DIAGRAMS”
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EL-11, “POWER SUPPLY ROUTING” for power distribution circuit
When you perform trouble diagnosis, refer to the following:
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GI-25, “HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES”
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GI-21, “HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT”
GI
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PRECAUTIONS
Precautions (Cont’d)
EC-21
Special Service Tools
NHEC1417
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name
Description
KV10117100
(J36471-A)
Heated oxygen sensor
wrench
NT379
Loosening or tightening heated oxygen sensors
with 22 mm (0.87 in) hexagon nut
(J44321)
Fuel pressure gauge kit
LEC642
Checking fuel pressure with pressure gauge
EG17650301
(J33984-A)
Radiator cap tester
adapter
NT564
Adapting radiator cap tester to radiator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
Commercial Service Tools
NHEC1418
Tool name
(Kent-Moore No.)
Description
Leak detector
ie: (J41416)
NT703
Locating the EVAP leak
EVAP service port
adapter
ie: (J41413-OBD)
NT704
Applying positive pressure through EVAP service
port
PREPARATION
Special Service Tools
EC-22
Tool name
(Kent-Moore No.)
Description
Fuel filler cap adapter
ie: (MLR-8382)
NT815
Checking fuel tank vacuum relief valve opening
pressure
Socket wrench
NT705
Removing and installing engine coolant tempera-
ture sensor
Oxygen sensor thread
cleaner
ie: (J-43897-18)
(J-43897-12)
AEM488
Reconditioning the exhaust system threads before
installing a new oxygen sensor. Use with anti-
seize lubricant shown below.
a: J-43897-18 18 mm diameter with pitch 1.5
mm, for Zirconia Oxygen Sensor
b: J-43897-12 12 mm diameter with pitch 1.25
mm, for Titania Oxygen Sensor
Anti-seize lubricant
ie: (Permatex
TM
133AR
or equivalent meeting
MIL specification MIL-A-
907)
NT779
Lubricating oxygen sensor thread cleaning tool
when reconditioning exhaust system threads.
GI
MA
EM
LC
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AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
PREPARATION
Commercial Service Tools (Cont’d)
EC-23
Engine Control Component Parts Location
NHEC1419
SEC993CA
ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Engine Control Component Parts Location
EC-24
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