9-94
P0030
For this check, also set the stop/run/start switch to “ON”.
• Short circuit check
Disconnect the ECU related connectors before checking.
Refer to “PARTS CONNECTED TO THE ECU” on page 9-4.
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–ground
pink/black–ground
O
2
sensor coupler “1”
red–any other coupler terminal
pink/black–any other coupler terminal
ECU coupler “2” pink/black–any other coupler terminal
Is resistance ∞ Ω?
YES
→ Go to step 4.
NO
a. Replace the wire harness.
b. Turn the main switch to “ON”, and then check the condition of the DTC using the malfunction
mode of the YDT.
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.
R
P/B
Gy/G
B/L
R
P/B
Gy/G
B/L
O
Gy/RO/GP/BY/R
B
R/BG/BL/BLg/R
B
G/YR/L
B/WB/WR/LL/WY/BY/RR/G
A B
1
2
1
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