Mash Seventy - Page 131

Chapter 4 EI system diagnosis Section 4 EI system troubleshooting
4—36
“P0650” ENGINE WARNING LAMP CIRCUIT MALFUNCTION
DETECTED CONDITION
POSSIBLE CAUSE
☞ To read the flash code,with the EFI diagnostic
instrument
●
engine warminglampcircuitopenandshort.
●
engine warninglampmalfunction.
●
ECU malfunction.
 INSPECTION
1)
Turn the ignition switch to the “OFF”position.
2)
Disconnect the instrument panel leadwires.
3)
Connectthebattery
⊕
terminaltotheRwire pinand
Bwirepin ofthe instrument panel and the battery

terminal to the G wire pin of theinstrument panel.
And then connect the B/R wire pin oftheinstrument
panel to the battery

terminal directly
Is the engine warning lamp lit?
YES
●
B/Ror B wire open or shortedto
groundorpoor
G3(J1-3)
connection of ECU
coupler.
● If wire and connection are OK,
intermittenttroubleorfaultyECU.
● Recheck each terminal andwire
harness for open circuit and poor
connection.
NO
Replace the instrument panel with a
new one.
G3
G3