Page 100 - Foton Workshop Manual - Auman EST-M

DI - 46 Diagnosis - Diagnosis-fault diagnosis of electronic and electrical parts

Faults of inlet manifold pressure/temperature sensor
122- circuit of inlet manifold pressure sensor 1-voltage over normal value or short to high-voltage
power source
123- circuit of inlet manifold pressure sensor 1-voltage over normal value or short to low-voltage power
source

153- circuit of inlet manifold temperature sensor 1-voltage over normal value or short to high-voltage
power source
154- circuit of inlet manifold temperature sensor 1-voltage over normal value or short to low-voltage
power source
155- temperature of inlet manifold 1-valid data and over normal operation range-the highest severity
level
2964- temperature of inlet manifold 1-valid data and over normal operation range-the lowest severity
level

Overview

The inlet manifold pressure/temperature sensor shall be installed on the inlet manifold, which is used to
measure the absolute pressure and temperature of intake air in the inlet manifold. Play the role of intake flow
calculation, booster protection, smoking restriction, intake temperature overheating protection. Intake
temperature/pressure sensor failures include: power not sufficient, speed limited, high oil consumption, etc.
Circuit diagram

Engine ECM
Intake
Intake air
pressure
temperature Sensor - signal Sensor +
signal

Black White White Red

Intake manifold pressure/ temperature sensor

DI-046