PIAGGIO PORTER 1.3 16V 2008, Руководство по обслуживанию

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CIRCUIT DESCRIPTION
The manifold absolute pressure sensor measures
the inlet manifold pressure as voltage. Since the
manifold absolute pressure sensor does not take
atmospheric pressure as a measurement method,
but measures the absolute pressure inside the in-
let manifold (vacuum corresponds to 0 pressure),
it is not influenced by atmospheric pressure fluc-
tuations caused by altitude and other factors. This
allows the sensor to check the air-fuel ratio at the
suitable level under all conditions.
M.A.P.: Absolute pressure in the air inlet manifold
N.B.
AFTER CONFIRMING THE DIAGNOSTIC FAILURE CODE P0105, USE THE OBD II GENERAL
SCANNING DEVICE OR DIAGNOSTIC TESTER TO CONFIRM THE MANIFOLD ABSOLUTE PRES-
SURE IN "CURRENT DATA".
DIAGNOSTIC FAILURE CODE DETECTION CONDITIONS - P0105
Specification Desc./Quantity
P0105 - Open circuit or short circuit in the manifold absolute
pressure sensor circuit
- interrupted or short-circuited wire in the manifold absolute
pressure sensor cable harness
- manifold absolute pressure sensor
- engine electronic control unit
If the electronic control unit detects the diagnostic failure code P0105, the failure-free function which
keeps the ignition timing and the injection volume constant is activated, allowing vehicle riding.
ABSOLUTE PRESSURE IN THE INLET MANIFOLD
Specification Desc./Quantity
0 kPa PIM circuit in short circuit
130 kPa - VCPM circuit open or short-circuited - PIM circuit open - E2PM
circuit open
For the Model EURO 4, the circuits described in the table above comprise the cable harnesses before
and after the ECU DRACO control unit and on the DRACO.
CHECKING PROCEDURE - USING THE DIAG-
NOSTIC TESTER OR OBD II GENERAL SCAN-
NING DEVICE.
1. Checking MAP sensor output value
•
With the ignition switch set to OFF,
connect the diagnostic tester directly to
the (DTC) Data Link Connector with
the special tool.
Specific tooling
Iniection System
PORTER 1.3 16V
IS - 438