ENGINE (J05E)/TROUBLESHOOTING
2–214
1.
Set the starter key to the "LOCK" position.
2.
Connect the air flow sensor connector.
3.
Start the engine.
4.
Use the oscilloscope to measure the signal voltage between the
terminals in the engine ECU (signal check harness).
NO
YES
1.
Perform engine warm up. (engine coolant temperature: 80
C {176
F} or more)
2.
Stop the engine and set the starter key to the "ON" position.
3.
Select [Engine] and check if P0104 has been detected.
NO
YES
7
Inspect the air flow sensor signal
E74
E78
D
SHTS021270300195
Measurement
conditions
Tester
connections
Standard values
After engine warm
up, with engine
idling
Engine ECU (sig-
nal check har-
ness)
AFSI (E74)
–
AGD6 (E78)
5
–
6 kHz
Do the measurements meet the standard value?
Go to step 8.
Replace the air flow sensor.
Perform "After-inspection work" of INFOR-
MATION section.
8
Check the DTC detected (Engine ECU) 2
SHTS021270300196
Has DTC P0104 been detected?
Replace the engine ECU.
Perform "After-inspection work" of INFOR-
MATION section.
Procedure completed.
Perform "After-inspection work" of INFOR-
MATION section.