Page 428 - Foton Workshop Manual - Tunland (AT)
P. 428
04-282 DIAGNOSTICS - ENGINE CONTROL SYSTEM
P1896，P2351，P2352，P2357-EGR VALVE FAULT
P1896-EGREGR VALVE CONTROLLER - BEYOND CALIBRATION
P2351-EGREGR VALVE POSITION CIRCUIT - VOLTAGE IS BELOW
NORMAL OR SHORTED TO LOW VOLTAGE POWER SUPPLY
04 P2352-EGR VALVE CONTROL CIRCUIT -VOLTAGE IS ABOVE
NORMAL OR SHORTED TO HIGH VOLTAGE POWER SUPPLY
P2357-EGR VALVE CONTROL CIRCUITS - MECHANICAL
SYSTEMS ARE NOT RESPONSIVE OR MISALIGNED
Description
1 . The engine control module (ECM) controls the EGR valve to turn on and off
under different operating conditions.The EGR valve is switched on and off by
a DC motor which receives the voltage from the ECM by the EGR valve motor
signals (+) and (-) circuitry.The motor opens the EGR valve when receiving the
voltage is from the EGR valve motor signal (+) circuit.The motor closes the EGR
valve when receiving the voltage from the EGR valve motor signal (-) circuit.
Circuit Diagram
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