FUEL SYSTEM (EFI) 3-77
Error Code Troubleshooting
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If any error codes are checked out, do the maintenance as per error code.
ERROR TYPE ERROR CODE POSSIBLE CAUSES
ERROR_TPS_LOW 1
● TPS NOT CONNECTED
● TPS CALIBRATIN ERROR
● WIRING FAULTY [Wire that connecting PIN30 ECU to PIN2
TPS is at potential ≥ 5V] or [S.C. between Wire1 that
connecting PIN32 ECU to PIN1 TPS and Wire2 that
connecting PIN30 ECU to PIN2 TPS]
● TPS FAULTY
ERROR_TPS_HIGH 2
ERROR_TEMP-
ENGINE_LOW
3
● WIRING FAULTY [S.C. between Wire1 that connecting PIN29
ECU to PIN1 TH2O sensor and Wire2 that connecting PIN27
ECU to PIN2 TH2O sensor or GND]
● TH2O SENSOR DAMAGED
ERROR_TEMP-
ENGINE_HIGH
4
● TH2O SENSOR NOT CONNECTED
● WIRING FAULTY [Short Circuit between Wire1 that connected
PIN29 ECU to PIN1 TH2O sensor and GND].
● TH2O SENSOR DAMAGED
ERROR_TEMP-AIR_
LOW
5
● WIRING FAULTY [S.C. between Wire1 that connecting PIN28
ECU to PIN1 TAIR sensor and Wire2 that connecting PIN27
ECU to PIN2 TAIR sensor or GND]
● TAIR SENSOR DAMAGED
ERROR_TEMP-AIR_
HIGH
6
● TAIR SENSOR NOT CONNECTED
● WIRING FAULTY
● TAIR SENSOR DAMAGED
ERROR_PRES-AIR_
LOW
7
● ECU DAMAGED
ERROR_PRES-AIR_
HIGH
8
ERROR_VB_LOW 9
● VOLTAGE REGULATOR DAMAGED
● WIRING FAULTY
ERROR_INJECTOR
1_S.C. TO VBAT
11
● WIRING FAULTY [S.C. between Wire1 that connecting PIN7
ECU to PIN2 INJECTOR 1 and Wire 2 that connecting PIN87
MAIN RELAY to PIN1 INJECTOR 1]
● INJECTOR 1 DAMAGED
ERROR_INJECTOR
1_S.C. TO GND
12
● WIRING FAULTY [S.C. between Wire1 that connecting PIN7
ECU to PIN2 INJECTOR 1 and GND]
ERROR_INJECTOR
1_O.C.
13
● INJECTOR 1 NOT CONNECTED
● WIRING FAULTY
● INJECTOR 1 DAMAGED
ERROR_INJECTOR
2_S.C. TO VBAT
14
● WIRING FAULTY [S.C. between Wire1 that connecting PIN8
ECU to PIN2 INJECTOR 2 and Wire 2 that connecting PIN87
MAIN RELAY to PIN1 INJECTOR 2]
● INJECTOR 2 DAMAGED
ERROR_INJECTOR
2_S.C. TO GND
15
● WIRING FAULTY [S.C. between Wire1 that connecting PIN8
ECU to PIN2 INJECTOR 2 and GND]