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Engine Management – V6 – Diagnostics Page 6C1-2–114
• To assist diagnosis, refer to 3 Wiring Diagrams and Connector Charts in this Section, for the system wiring Test Description The following numbers refer to the step numbers in the diagnostic table: 3 The ECM supplies 2.5 V to signal circuit of the CKP sensor circuit to reduce the electro-magnetic interference 4 The ECM supplies 2.5 V to low reference circuit of the CKP sensor circuit to reduce the electro-magnetic DTC P0335 to P0338 Diagnostic Table Step Action Yes No 1 Has the Diagnostic System Check been performed? Go to Step 2 Refer to 4.4 Diagnostic System Check in this Section 2 1 Switch off the ignition for 30 seconds. 2 Start the engine. 3 Increase the engine speed to 1000 rpm for 30 seconds. 4 Using Tech 2, select the DTC display function. Does DTC P0335, P0336, P0337 or P0338 fail this ignition cycle? Go to Step 3 Refer to Additional Information in this DTC 3 1 Disconnect the CKP sensor connector. 2 Switch on the ignition with the engine not running. 3 Using a digital multimeter, measure the voltage between the Does the multimeter display 2 – 3 V? Go to Step 4 Go to Step 7 4 Using a digital multimeter, measure the voltage between the CKP Does the multimeter display 2 – 3 V? Go to Step 5 Go to Step 7 5 Using a digital multimeter, measure the resistance between the Does the multimeter display 5 Ω? Go to Step 6 Go to Step 7 6 Perform the following CKP sensor inspection: • Inspect the sensor wiring harness for conditions that may induce Intermittent Fault Conditions in this Section. • Inspect the sensor for incorrect sensor installation or incorrect Was any fault found and rectified? Go to Step 11 Go to Step 9 7 Test the CKP sensor signal circuit and low reference circuit for a high Was any fault found and rectified? Go to Step 11 Go to Step 10 |