Page 2644 - Foton Workshop Manual - Sauvana

62-592 DIAGNOSIS-ENGINE CONTROL SYSTEM

3. Check the spark plug

(a). Check the high-voltage coil resistance and clean the connector terminals.
(b). Check whether the spark plug has carbon deposition and carbon marks or not, the
ceramic insulation part is cracked and leaked or not, andpositive and negative poles
are ablated or not and clean the spark plug.

Is the inspection result normal?
YES>To step 4。
No >Clean and change the default parts.

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?

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 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 6。

6. 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 7。
No >Clean and change the default parts.To step 11。

Page 2644