Page 316 - Foton Workshop Manual - Tunland (AT)

04-170 DIAGNOSTICS - ENGINE CONTROL SYSTEM

(e) Ignition switch: ON.

(f) Use a multimeter to measure the voltage
between the pin 1 of the atmospheric pressure
sensor connector E20 and the ground.
Standard voltage
04
Multimeter connection
Standard value
pin
E20（1）- ground 4.75～5.25 V

Is the inspection result normal?

YES>To step 3.
No > Maintain or replace the harness.

3 . Check atmospheric pressure sensor harness
(a) Ignition switch: OFF.
(b) Disconnect the battery negative cable.
(c) Disconnect the atmospheric pressure sensor connector E20.
(d) Disconnect connector E01 of ECM.

(e) Use a multimeter to measure the resistance
between the pin 2, 3 of the atmospheric
pressure sensor connector E20 and the pin
64, 72 of ECM connector E01 respectively.
Standard resistance

Multimeter connection
Standard value
pin

E20（2）- E01（64） ＜10 Ω
E20（3）- E01（72） ＜10 Ω

Page 316