Page 304 - Foton Workshop Manual - Tunland (AT)
P. 304
04-158 DIAGNOSTICS - ENGINE CONTROL SYSTEM
P153，P154，P155，P2964-INTAKE MANIFOLD 1 TEMPERATURE
SENSOR FAULT
P153-INTAKE MANIFOLD 1 TEMPERATURE SENSOR
CIRCUIT-VOLTAGE IS ABOVE NORMAL OR SHORTED TO HIGH
04 VOLTAGE POWER SUPPLY
P154-INTAKE MANIFOLD 1 TEMPERATURE SENSOR
CIRCUIT-VOLTAGE IS BELOW NORMAL OR SHORTED TO LOW
VOLTAGE POWER SUPPLY
P155-INTAKE MANIFOLD 1 TEMPERATURE - DATA IS VALID
BUT ABOVE NORMAL OPERATING RANGE - HIGHEST SEVERITY
LEVEL
P2964-INTAKE MANIFOLD 1 TEMPERATURE - DATA IS VALID
BUT ABOVE NORMAL OPERATING RANGE -LOWEST SEVERITY
LEVEL
Description
1 . The intake manifold temperature sensor is a variable resistor sensor, used to
measure the air temperature into the engine intake manifold.The engine control
module (ECM) provides a 5V power source to the intake manifold temperature
signal circuit. ECM monitors voltage changes due to resistance changes in
sensor to determine the temperature of the intake manifold.
Circuit Diagram
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