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CHERY·A21 SERVICE MANUAL ENGINE EFI SYSTEM 43 DTC: P0340 Phase sensor signal failure No. Operating steps Result Follow up steps 1 Connect the diagnostic tester and commutator, put the ignition switch to “ON”
Next step Yes To step No.4 2 Take off the phase sensor joint from the cable; check the voltage value by multimeter between phase sensor joint pin No.3 and No.1; and observe if it is around 12V. No Next step Yes Repair or replace the cable 3 Check if there is open circuit or short circuit to ground between circuit of phase sensor joint pin No.3 and main relay pin No.87; check if there is bad contact of phase sensor connector No.1. No Next step Yes To step 6 4 Check the voltage if it is around 9.9V between phase sensor joint pin No.2 and power supply cathode. No Next step Yes Repair or replace cable 5 Check if there is open circuit or short circuit to power supply or to ground between phase sensor joint pin No.2 and ECU pin No.79. No Next step Yes Diagnosis help 6 Check the camshaft signal disc if it is in good conditions. No Replace signal disc DTC: P0342 Much lower voltage of the phase sensor No. Operating steps Result Follow up steps 1 Connect the diagnostic tester and commutator, put the ignition switch to “ON”
Next step Yes To step No.4 2 Take off the phase sensor joint from the cable; check the voltage value by multimeter between phase sensor joint pin No.3 and No.1; and observe if it is around 12V. No Next step Yes Repair or replace the cable 3 Check if there is open circuit or short circuit to ground between circuit of phase sensor joint pin No.3 and main relay pin No.87; check if there is bad contact of phase sensor connector No.1. No Next step Yes To step 6 4 Check the voltage if it is around 9.9V between phase sensor joint pin No.2 and power supply cathode. No Next step Yes Repair or replace cable 5 Check if there is open circuit or short circuit to power supply or to ground between the circuit of phase sensor joint pin No.2 and ECU pin No.79. No Next step Yes Diagnosis help 6 Check the camshaft signal disc if it is in good conditions. No Replace signal disc
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