Page 2649 - Foton Workshop Manual - Sauvana

DIAGNOSIS-ENGINE CONTROL SYSTEM 62-597

4. Check the crankshaft position sensor

(a). Use a diagnostic tool to read the data flow of the crankshaft position sensor shown
on the diagnostic tool. And it should reach the specific value when starts.

Is the inspection result normal? 62

YES>To step 5。
No >Check whether the sensor assembled correctly or not, maintain or change the
harness, connector or damaged parts.

5. Check the cooling liquid temperature sensor and inlet pressure temperature sensor

(a). Check whether the inlet pressure temperature sensor assembled right or not.
(b). Dismantle the inlet pressure temperature sensor.
(c). Check whether the sensing hole is blocked or not, and whether the resistance
between the terminals is in line with the standard or not.。
(d). Check whether the cooling liquid temperature sensor is dirty or not.
(e). Ignition switch: Turn on the ignition switch, read the data flow of the inlet pressure
temperature sensor and the cooling liquid temperature sensor shown on the
diagnostic tool.

Is the inspection result normal?
YES>To step 6。
No >Clean and change the default parts.

6. Check the air intake system

(a). Check the vacuum of the intake pipe at idle.
(b). Check the air intake pipe joints, gaskets, vacuum hose and the fuel steam system.
(c). Check whether the air filter has the filter elements blocked or not.

Is the inspection result normal?
YES>To step 7。
No >Clean and change the default parts.

7. Check the electronic throttle

(a). Slightly step the accelerator pedal and start the motor.

Check whether it can startor not.
YES>Check the throttle and idling channel, clean up the carbon deposition. Check whether
the idling motor is stuck or not, if it is necessary, maintain or change it.
No >To step 8。

Page 2649