CHASSIS ELECTRICAL ± Combination Meters
54A-23
Inspection Procedure 6
GDI ECO indication lamp does not illuminate.
Probable cause
GDI ECO indication lamp is illuminated by GDI ECO indication lamp-ECU.
When it does not illuminates, GDI ECO indication lamp bulb may be blown, or
combination meter, power supply circuit of GDI ECO indication lamp-ECU or GDI
ECO indication lamp-ECU may be malfunctioning.
D ECO indication lamp bulb blown
D Malfunction of combination meter
D Malfunction of GDI ECO indication lamp
D Malfunction of engine-ECU
D Damaged harness or connectors
Replace engine-ECU.
NG
Check trouble symptoms.
Replace GDI ECO indication lamp-ECU.
NG
Check harness wire between GDI ECO indication lamp-ECU and
engine-ECU, between GDI ECO indication lamp-ECU and rheostat.
NG
Check trouble symptoms.
Repair
NG
OK
Check trouble symptom.
Check following connectors: C-55, C-07
OK
NG
Check bulb for being blown.
NG
Check GDI ECO indication lamp at GDI ECO indication lamp-ECU
connector C-55
D Disconnect connector and measure at harness side.
D Ignition switch: ON
D Connect between terminal 2 and body earth
OK: Lamp illuminate
Other illumination lamps normally darken with rheostat.
OK
Check the rheostat. (Refer to P.54A-44.)
NG
Check the harness wires between combination meter and GDI
ECO indication lamp-ECU.
NG
Check following connectors: C-02 <L.H. drive vehicles>, C-76,
C-74
Measure at GDI ECO indication lamp-ECU connector C-55
D Disconnect connector and measure at harness side.
D Ignition switch: ON
D Voltage between terminal 1 and body earth
OK: System voltage
OK
Repair
NG
OK
Check trouble symptom.
NG
Check the harness wires between ignition switch (IG) and GDI
ECO indication lamp-ECU.
NG
Check following connector: C-55
Measure at GDI ECO indication lamp-ECU connector C-55
D Disconnect connector at measure harness side.
D Continuity between terminal 8 and body earth
OK: Continuity
OK
Repair
NG
OK
Check trouble symptom.
NG
Check harness wire between GDI ECO indication lamp-ECU and
body earth.
NG
Repair
Check following connectors: C-55, C-83, C-29,C-17
OK
OK
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