9-71
P0030
For this check, also set the engine stop switch to “ON”.
• 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”
Is it in the “Recovered” condition?
YES
Go to step 6, and complete the service.
NO
Start the engine, and then check the condition of the DTC.
Is it in the “Recovered” condition?
YES
Go to step 6, and complete the service.
NO
Go to “Short circuit check”.
Between O
2
sensor coupler “1” and ground
red/blue–ground
black/green–ground
O
2
sensor coupler “1”
red/blue–any other coupler terminal
black/green–any other coupler terminal
ECU coupler “2” black/green–any other coupler terminal
Fuel injection system relay coupler “3” red/blue–any other coupler terminal
Is resistance ?
YES
Go to step 4.
NO
a. Replace the wire harness.
b. Push the ON/start switch, and then check the condition of the DTC using the malfunction mode
of the YDT.
R/L
B/G
Gy/G
B/L
R/L
B/G
Gy/G
B/L
R
R/L
R/B
L/Y
O
B/G
Y/R
B
R/BG/B
Y/W
B
Y/R
R/L
B
B
R/L
L/Y
Y/W
R
B
1
1
3
2
A
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