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12 Connect the M-MDS to the DLC-2. Yes DTC is displayed: Open circuit in wiring harness Open main relay GND circuit Main relay is stuck open. Open or short circuit in wiring Open or poor GND circuit (PCM Poor connection of vehicle body No No DTC is displayed: Go to the next step. 13 Attempt to start engine at part throttle. Yes Inspect electronic throttle control system No Go to the next step. 14 Connect the M-MDS to the DLC-2. Yes Go to the next step. No Inspect for the following: Open or short circuit in CKP sensor Open or short circuit in wiring harness between CKP sensor terminal A and PCM terminal 2P Open or short circuit in wiring harness between CKP sensor terminal B and PCM terminal 2T Open or short circuit in CKP sensor wiring harnesses
If CKP sensor and wiring harness are normal, go to the next step. Visually inspect CKP sensor and teeth of
2008 Mazda CX-9 Grand Touring 2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
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