Page 2601 - Foton Workshop Manual - Sauvana

DIAGNOSIS-ENGINE CONTROL SYSTEM 62-549
P0122，P0123，P0222，P0223，P2135 - ELECTRONIC

THROTTLE SENSOR FAILURE

P0122-The voltage of electronic throttle position sensorsignal 1 circuit is too low
P0123-The voltage of electronic throttle position sensor signal 1 circuit is too high
P0222-The voltage of electronic throttle position sensorsignal 2 circuit is too low 62
P0223-The voltage of electronic throttle position sensor signal 2 circuit is too high
P2135-Improper signal of lower voltage of electronic throttle pedal position sensor1

General

The electronic throttle position sensor provides throttle opening, throttle change speed,
and idle speed position information to theECU. ECU makes judgments and the appropriate
responses based on above information (such as: starting up, idle speed, reversing gear,
load), acceleration or deceleration, ECU obtain throttle position information by detecting
voltage.

Circuit Diagram

Engine ECU
E01
C99
Signal 1 Power- Signal2 Power+ Motor+ Motor-
E01 E01 E01 E01 E01 E01
24 12 41 44 19 20

L-W W-Y V G V-R R

1 2 4 6 3 5

Electronic throttle E23

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Page 2601