Page 402 - Foton Workshop Manual - Tunland (AT)
P. 402
04-256 DIAGNOSTICS - ENGINE CONTROL SYSTEM
P691，P692-TURBOCHARGER 1 COMPRESSOR INLET
TEMPERATURE CIRCUIT
P691-TURBOCHARGER 1 COMPRESSOR INLET TEMPERATURE
CIRCUIT -VOLTAGE IS ABOVE NORMAL OR SHORTED TO HIGH
04 VOLTAGE POWER SUPPLY
P692-TURBOCHARGER 1 COMPRESSOR INLET TEMPERATURE
CIRCUIT -VOLTAGE IS BELOW NORMAL OR SHORTED TO HIGH
VOLTAGE POWER SUPPLY
Description
1 . The intake mass flow sensor is a variable resistor sensor, used to measure the
air temperature into the turbocharger compressor inlet.The engine control
module (ECM) provides a 5V power source to the intake mass flow sensor signal
circuit. ECM monitors voltage changes due to resistance changes in sensor to
determine the temperature of the air temperature
Circuit Diagram
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