Hyundai HX145LCR Manual page 383

5. 5. WHEN AIR CLEANER WARNING LAMP LIGHTS UP WHEN AIR CLEANER WARNING LAMP LIGHTS UP (engine is started)
·Before disconnecting the connector, always turn the starting switch OFF.
·Before carrying out below procedure, check all the related connectors are properly inserted.
·After checking, insert the disconnected connectors again immediately unless otherwise specified.
YES
Does display go
off when
disconnect
CD-10?
Starting switch : ON
Check resistance
Engine : Start
between CN-51
NO
(29) and chassis
Starting switch : OFF
Disconnect CN-51
Check resistance Check resistance
MAX 1 Ω
YES
MIN 1M Ω
NO
YES
NO
MCU
29
CN-51
AIR CLEANER SWITCH
Pa
CD-10
6-28
Cause Remedy
Clogged air filter or Check filter or
defective switch replace switch
Short circuit in Repair or replace
wiring harness (After clean)
between CD-10-
CN-51 (29)
Defective MCU Replace
300L6ES06