9-100
P0201
• Short circuit check
Disconnect the ECU related connectors before checking.
Refer to “PARTS CONNECTED TO THE ECU” on page 9-3.
Ground short circuit check “A”
Lines short circuit check “B”
5. Malfunction in ECU.
• Replace the ECU, and complete the service.
Refer to “REPLACING THE ECU (Engine Control Unit)” on page 8-93.
6. Delete the DTC and check that the MIL goes off.
• Start the engine and let it idle for approximately 5 seconds.
• Confirm that the DTC has a condition of “Recovered” using the malfunction mode of the YDT, and
then delete the DTC.
Between injector #1 coupler “1” and ground
red/black–ground
red/blue–ground
Injector #1 coupler “1”
red/black–any other coupler terminal
red/blue–any other coupler terminal
ECU coupler “2” red/black–any other coupler terminal
Fuel injection system relay coupler “3” red/blue–any other coupler terminal
Is resistance ?
YES
Go to step 5.
NO
a. Replace the wire harness.
b. Execute the diagnostic mode. (Code D36)
Is it hear operating sound?
YES
Go to step 6.
NO
Go to step 5.
O
B/GY/R
B
R/BG/B
Y/W
B
Y/RR/L
BB
R/LL/Y
Y/W
R
R
R/L
R/B
L/Y
R/L R/B
R/L R/B
A B
1
1
2
3
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