Infiniti G37 Coupe. Manual - part 542
P0555 BRAKE BOOSTER PRESSURE SENSOR
EC-349
< COMPONENT DIAGNOSIS >
[VQ37VHR]
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P0555 BRAKE BOOSTER PRESSURE SENSOR
Description
INFOID:0000000001736749
Brake booster pressure sensor is connected to brake booster by a
hose. It detects brake booster pressure and sends the voltage signal
to the ECM. The sensor uses a silicon diaphragm which is sensitive
to the change in pressure. As the pressure increases, the voltage
rises.
DTC Logic
INFOID:0000000001736751
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and let it idle for 10 seconds.
2.
Check DTC.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000001736752
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection M95. Refer to Ground Inspection in
Is the inspection result normal?
JMBIA0878ZZ
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0555
Brake booster pressure sensor
circuit
• An excessively low voltage from the
sensor is sent to ECM.
• An excessively high voltage from the
sensor is sent to ECM.
• Harness or connectors
(The sensor circuit is open or shorted.)
[CKP sensor (POS) circuit is shorted.]
(APP sensor 2 circuit is shorted)
(EVAP control system pressure sensor
circuit is shorted.)
(Refrigerant pressure sensor circuit is
shorted.)
• Brake booster pressure sensor
• Crankshaft position sensor (POS)
• Accelerator pedal position sensor
• EVAP control system pressure sensor
• Refrigerant pressure sensor