Nissan Tiida C11. Instruction — part 493
EC-622
< COMPONENT DIAGNOSIS >
[HR16DE (WITHOUT EURO-OBD)]
HO2S2 HEATER
>> INSPECTION END
8.
CHECK INTERMITTENT INCIDENT
GI-55, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000001697506
1.
CHECK HEATED OXYGEN SENSOR 2 HEATER
1.
Turn ignition switch OFF.
2.
Disconnect heated oxygen sensor 2 harness connector.
3.
Check resistance between HO2S2 terminals as follows.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE HEATED OXYGEN SENSOR 2
Replace heated oxygen sensor 2.
CAUTION:
• Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.
• Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool and approved anti-seize lubricant.
>> INSPECTION END
Terminals
Resistance [at 25
°
C (77
°
F)]
2 and 3
3.3 - 4.4
Ω
1 and 2, 3, 4
∞
Ω
(Continuity should not exist)
4 and 1, 2, 3
IAT SENSOR
EC-623
< COMPONENT DIAGNOSIS >
[HR16DE (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
IAT SENSOR
Description
INFOID:0000000001697507
The intake air temperature sensor is built-into mass air flow sensor
(1). The sensor detects intake air temperature and transmits a signal
to the ECM.
The temperature sensing unit uses a thermistor which is sensitive to
the change in temperature. Electrical resistance of the thermistor
decreases in response to the temperature rise.
<Reference data>
*: These data are reference values and are measured between ECM terminal 46
(Intake air temperature sensor) and ground.
CAUTION:
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 ECM
terminals, such as the ground.
Component Function Check
INFOID:0000000001697508
1.
CHECK INTAKE AIR TEMPERATURE SENSOR FUNCTION
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Diagnosis Procedure
INFOID:0000000001697509
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection E21. Refer to Ground Inspection in
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1.
Disconnect mass air flow sensor (with intake air temperature sensor) harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between mass air flow sensor harness connector and ground.
PBIA9559J
Intake air temperature
°
C (
°
F)
Voltage*
V
Resistance
k
Ω
25 (77)
3.3
1.800 - 2.200
80 (176)
1.2
0.283 - 0.359
SEF012P
ECM
Ground
Voltage
Connector
Terminal
F8
46
Ground
Approx. 0 - 4.8V
EC-624
< COMPONENT DIAGNOSIS >
[HR16DE (WITHOUT EURO-OBD)]
IAT SENSOR
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.
CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between mass air flow sensor harness connector and ECM harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK INTAKE AIR TEMPERATURE SENSOR
EC-624, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace mass air flow sensor (with intake air temperature sensor).
5.
CHECK INTERMITTENT INCIDENT
GI-55, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000001697510
1.
CHECK INTAKE AIR TEMPERATURE SENSOR
1.
Turn ignition switch OFF.
2.
Disconnect mass air flow sensor harness connector.
3.
Check resistance between mass air flow sensor terminals as follows.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace mass air flow sensor (with intake air temperature sensor).
MAF sensor
Ground
Voltage
Connector
Terminal
E18
2
Ground
Approx. 5V
MAF sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
E18
1
F8
55
Existed
Terminals
Condition
Resistance
1 and 2
Temperature C
°°
(F
°
)
25 (77)
1.800 - 2.200 k
Ω
IGNITION SIGNAL
EC-625
< COMPONENT DIAGNOSIS >
[HR16DE (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
IGNITION SIGNAL
Description
INFOID:0000000001693439
The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns
ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil
secondary circuit.
Component Function Check
INFOID:0000000001693440
1.
INSPECTION START
Turn ignition switch OFF, and restart engine.
Does the engine start?
YES-1 >> With CONSULT-III: GO TO 2.
YES-2 >> Without CONSULT-III: GO TO 3.
NO
>> Go to
2.
IGNITION SIGNAL FUNCTION
With CONSULT-III
1.
Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-III.
2.
Make sure that each circuit produces a momentary engine speed drop.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
3.
IGNITION SIGNAL FUNCTION
Without CONSULT-III
1.
Let engine idle.
2.
Read the voltage signal between ECM harness connector terminals as follows.
NOTE:
The pulse cycle changes depending on rpm at idle.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Diagnosis Procedure
INFOID:0000000001693441
1.
CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1.
Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
2.
Check the voltage between ECM harness connector terminals as follows.
ECM
Ground
Voltage signal
Connector
Terminal
Connector
Terminal
F10
17
E16
108
18
21
22
JMBIA0329GB
(+)
(–)
Voltage
Connector
Terminal
Connector
Terminal
E16
105
E16
108
Battery voltage
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