Nissan Note [1699/1872] Diagnostic procedure

Nissan Note [1699/1872] Diagnostic procedure
POWER SUPPLY AND GROUND CIRCUIT
EC-1699
[K9K]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Remarks: Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic Procedure
BBS00414
1. INSPECTION START
Start engine.
Is engine running?
Yes or No
Yes >> GO TO 7.
No >> GO TO 2.
2. CHECK ECM POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 22 and ground with CON-
SULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM CONDITION
DATA
(DC Voltage and Pulse Signal)
22 O Ignition switch [Ignition switch ON]
BATTERY VOLTAGE
(11 - 14V)
25
26
27
B
B
B
ECM ground
[Engine is running]
Warm-up condition
Idle speed
Approximately 0V
32 B ECM ground
[Engine is running]
Warm-up condition
Idle speed
Approximately 0V
104 P ECM relay (self-shutoff)
[Ignition switch ON]
[Ignition switch OFF]
For a few seconds after turning ignition
switch OFF
Approximately 1.4V
[Ignition switch OFF]
More than a few seconds after turning igni-
tion switch OFF
BATTERY VOLTAGE
(11 - 14V)
109
110
G
G
Power supply for ECM [Ignition switch ON]
BATTERY VOLTAGE
(11 - 14V)
Voltage: Battery voltage
MBIB1461E

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