DTC Troubleshooting

NOTE: Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to PRECAUTIONS FOR DTC TROUBLESHOOTING .

DTC TROUBLESHOOTING CHART

Step	Action	YES	NO
1	Was "Engine and Emission Control System Check" performed?	Go to Step 2.	Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK .
2	CKP sensor and connector for proper installation check Is CKP sensor installed properly and connector connected securely?	Go to Step 3.	Correct.
3	CKP sensor power supply voltage check Disconnect connector from CKP sensor with ignition switch turned OFF. Check for proper terminal connection to CKP sensor and ECM connectors. If connections are OK, turn ignition switch to ON position. Check that CKP sensor power supply voltage is battery voltage between CKP sensor connector and vehicle body ground. Is it in good condition?	Go to Step 4.	Repair or replace CKP sensor power supply circuit.
4	Wire harness check Turn ignition switch OFF position. Disconnect connector from ECM. Check that CKP sensor circuit is as follows. Wiring harness resistance of CKP sensor signal circuit is less than 3 Ω. Insulation resistance of each CKP sensor signal and ground circuit between CKP sensor connector and vehicle body ground is infinity. Insulation resistance of wire harness is infinity between CKP sensor signal terminal and each other terminal at CKP sensor connector. Circuit voltage of each CKP sensor signal circuit and ground circuit is 0 - 1 V with ignition switch turned ON. Are they in good condition?	Go to Step 5.	Repair or replace defective wire harness.
5	CKP sensor signal circuit voltage check Check that CKP sensor signal circuit voltage is 5 V between CKP sensor connector and vehicle body ground. Is it in good condition?	Go to Step 6.	Substitute a known-good ECM and recheck.
6	CKP sensor check Check CKP sensor and sensor rotor referring to CAMSHAFT POSITION (CMP) SENSOR AND CRANKSHAFT POSITION (CKP) SENSOR INSPECTION . Are they in good condition?	Go to Step 7.	Replace CKP sensor and/or sensor rotor.
7	CMP sensor and its circuit check Check CMP sensor and its circuit referring to Step 2 to 6 of DTC P0340: CAMSHAFT POSITION SENSOR CIRCUIT . Are they in good condition?	Substitute a known-good ECM and recheck.	Repair or replace.