Infiniti M45 (Y34). Manual — part 436
DTC P1111, P1136 IVT CONTROL SOLENOID VALVE
EC-433
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EC
2.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M135, F105
●
Harness for open or short between intake valve timing control solenoid valve and ECM relay
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR
OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between the following;
ECM terminal 152 (bank 1) and intake valve timing control solenoid valve terminal 1 or
ECM terminal 155 (bank 2) and intake valve timing control solenoid valve terminal 1.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 4.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to
EC-433, "Component Inspection"
OK or NG
OK
>> GO TO 5.
NG
>> Replace intake valve timing control solenoid valve.
5.
CHECK INTERMITTENT INCIDENT
Refer to
EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
Component Inspection
ABS002N2
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
1.
Disconnect intake valve timing control solenoid valve harness connector.
2.
Check resistance between intake valve timing control solenoid
valve terminals as follows.
Removal and Installation
ABS002N3
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to
Continuity should exist.
Terminals
Resistance
1 and 2
7.0 - 7.7
Ω
[at 20
°
C (68
°
F)]
1 or 2 and ground
∞Ω
(Continuity should not exist)
PBIB0193E
EC-434
DTC P1119 RADIATOR COOLANT TEMPERATURE SENSOR
DTC P1119 RADIATOR COOLANT TEMPERATURE SENSOR
PFP:22630
Component Description
ABS002N4
The radiator coolant temperature sensor is installed on the radiator
lower tank and used to detect the radiator coolant temperature. The
sensor modifies a voltage signal from the ECM and returns the mod-
ified signal to the ECM as the radiator coolant temperature input.
The sensor uses a thermistor which is sensitive to the change in
temperature. The electrical resistance of thermistor decreases as
temperature increase. The ECM uses this signal to control the cool-
ing fan speed control solenoid valve.
<Reference data>
*: This data is reference values and is measured between ECM terminal 122 (Radia-
tor coolant 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.
On Board Diagnosis Logic
ABS002N5
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this diagnosis.
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode.
SEF594K
Radiator coolant temperature
°
C (
°
F)
Voltage*
V
Resistance
k
Ω
−
10 (14)
4.4
9.017 - 9.723
20 (68)
3.5
2.437 - 2.595
90 (194)
0.9
0.2416 - 0.2575
110 (230)
0.64
0.1451 - 0.1522
150 (302)
0.32
0.05927 - 0.06267
SEF012P
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1119
1119
Radiator coolant temperature
sensor circuit
An excessively high or low voltage from the
radiator coolant temperature sensor is sent to
ECM.
●
Harness or connectors
(The radiator coolant temperature
sensor circuit is open or shorted.)
●
Radiator coolant temperature sensor
Detected items
Engine operating condition in fail-safe mode
Radiator coolant temperature sensor circuit
ECM controls on assumption that the radiator coolant temperature is 97
°
C (207
°
F).
DTC P1119 RADIATOR COOLANT TEMPERATURE SENSOR
EC-435
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DTC Confirmation Procedure
ABS002N7
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Wait at least 5 seconds.
4.
EC-437, "Diagnostic Procedure"
.
WITH GST
Follow the procedure WITH CONSULT-II above.
SEF058Y
EC-436
DTC P1119 RADIATOR COOLANT TEMPERATURE SENSOR
Wiring Diagram
ABS002N8
TBWA0305E
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