Page 326 - Foton Workshop Manual - Tunland (AT)
P. 326
04-180 DIAGNOSTICS - ENGINE CONTROL SYSTEM
(g) Use a multimeter to measure the voltage
between the pin 30 of auxiliary fan relay R4
and the ground.
Standard voltage
Multimeter connection
04 pin Standard value
R4（30）- ground Battery voltage
Is the inspection result normal?
YES>To step 5.
No > Maintain or replace the harness.
5 . Check fan control circuit harness
(a) Ignition switch: OFF.
(b) Disconnect the battery negative cable.
(c) Disconnect main fan relay R5, R16 and auxiliary fan relay R4
(d) Disconnect connector A024 of ECM.
(e) Use a multimeter to measure the resistance
between the pin 85 of main fan relay R5 and
the pin 34 of ECM connector A024.
Standard resistance
Multimeter connection
Standard value
pin
R5（85）- A024（34） ＜10 Ω
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