BOOST SENSOR INSPECTION [WL-C, WE-C]

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Note
•  Perform the following inspection only when directed.

Visual Inspection

1.  Inspect the boost sensor for damage and cracks.

•  If there is any malfunction, replace the boost sensor/IAT sensor No.1.
•  If there is not any malfunction, perform the “Voltage Inspection”.


Voltage Inspection

1.  Turn the engine switch to the ON position (Engine off).

2.  Set the M-MDS and monitor the MAP PID. (See ON-BOARD DIAGNOSTIC TEST [WL-C, WE-C (Thailand, General (L.H.D. R.H.D.) specs.)].) (See ON-BOARD DIAGNOSTIC TEST [WL-C, WE-C (Australian, European (L.H.D. U.K.) specs.)].)

•  If not as specified, perform the “Circuit Open/Short Inspection”.
―  If there is no open/short circuit, replace the boost sensor/IAT sensor No.1. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [WL-C, WE-C].)
MAP PID (Reference)
Approx. 1.65 V [Atmospheric pressure 101 kPa {757.5 mmHg, 29.8 inHg}]

3.  Start the engine and warm up the engine completely.

4.  Monitor the MAP PID using the M-MDS at idle.

•  If not as specified, perform the “Circuit Open/Short Inspection”.
―  If there is no open/short circuit, replace the boost sensor/IAT sensor No.1. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [WL-C, WE-C].)
MAP PID (Reference)
Approx. 1.65 V [Atmospheric pressure 101 kPa {757.5 mmHg, 29.8 inHg}]


Circuit Open/Short Inspection

1.  Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [WL-C, WE-C].) (See PCM REMOVAL/INSTALLATION (U.K. Specs.) [WL-C, WE-C].)

2.  Disconnect the boost sensor/IAT sensor No.1 connector.

3.  Inspect for open/short circuit in the following wiring harnesses.

•  If there is open/short circuit, repair or replace wiring harnesses.
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Open circuit

•  Power circuit (Boost sensor/IAT sensor No.1 connector terminal D and PCM connector terminal 189)
•  Signal circuit (Boost sensor/IAT sensor No.1 connector terminal C and PCM connector terminal 133)
•  Ground circuit (Boost sensor/IAT sensor No.1 connector terminal A and PCM connector terminal 111)


Short circuit

•  Boost sensor/IAT sensor No.1 connector terminal A and PCM connector terminal 111 short to power supply
•  Boost sensor/IAT sensor No.1 connector terminal C and PCM connector terminal 133 short to power supply
•  Boost sensor/IAT sensor No.1 connector terminal C and PCM connector terminal 133 short to body ground
•  Boost sensor/IAT sensor No.1 connector terminal D and PCM connector terminal 189 short to power supply
•  Boost sensor/IAT sensor No.1 connector terminal D and PCM connector terminal 189 short to body ground