13A-21
MPI – TROUBLESHOOTING
Check connector: B-32
Replace the No 2. waste gate solenoid
valve
Check connector: B-19X
Measure at the waste gate
solenoid valve connector B-32
• Undo the connector and
measure on the solenoid
valve side
• Resistance between 1-2
OK: 29~35Ω(when at 20ºC)
Measure at the waste gate
solenoid valve connector B-32
• Undo the connector and
measure on the harness side
• Ignition switch: ON
•Voltage across earth at 63
OK: battery voltage
Measure at the engine ECU
connector C-50
• Measure the voltage at the
engine ECU terminal
• Ignition switch: ON
•Voltage across earth at 63
OK: battery voltage
Check connector: C-50
Inspect the harness between the
No.2 waste gate solenoid valve
and the engine ECU
• Check if the output wire is
damaged
Inspect the harness between the
No.2 waste gate solenoid valve
and the engine control relay
• Check if the power supply wire
is damaged
Replace the engine ECU
Inspect the harness between the No.2
waste gate solenoid valve and the
engine control relay, and repair if
necessary
• Check if the power supply wire is cut
or has short circuited
Check connector: C-50
Inspect the harness between the No.2
waste gate solenoid valve and the
engine ECU
• Check if the output wire is cut or has
short circuited
Replace the engine ECU
NG
OK
OK
OK
OK
OK
NG
NG
NG
NG
Repair
Repair
OK
OK
NG
NG
OK
Repair
NG
Repair
Repair
No.2 waste gate solenoid valve system Probable causes of the malfunction
The No.2 waste gate solenoid valve controls the supercharge pressure
introduced to the waste gate actuator in the turbocharger.
• Malfunction of the No.2 waste gate
solenoid valve.
• Circuit break, short circuit or a faulty
connection in the No.2 waste gate
solenoid valve circuit.
• Malfunction of the engine ECU.
OK
NG
Repair
OK
NG
Repair
Inspection procedure 37
