Page 242 - Foton Workshop Manual - Aumark (BJ1099)

11-16 ENGINE CONTROL SYSTEM - ELECTRONIC THROTTLE

OVERHAUL

1. Check action sound
When the ignition switch turns to "ON"(do not start engine), check whether the
action sound of throttle motor.
NOTICE:
If there is no action sound of throttle motor, check the control harness of electronic throttle.
If the control harness is normal, it may be the throttle motor or ECM fault.

2. Check throttle percentage
(a). Connect diagnostic device to diagnose
interface.
(b). Turn the ignition switch to "ON" and open
the diagnostic device–to read the data flow
using the latest software version.
(c). Select the menu item of "Read data flow".

fuwx11017

Device display Detection condition(range) Normal conditions
item

Idle position(Accelerator pedal 10%±2

•Ignition switch not depressed)
Air control shutter ON
turndown ratio •Engine does not Throttle gradually Increase with the increase of
run Open throttle open angle
Full open(When the accelerator 93%
pedal is fully depressed)

(d). If the signal value does not conform to provision or there is no signal output, check
electronic throttle, harness and ECM.

Page 242