Nissan MICRA K12 DTC P1065 ECM Power Supply
Even when the ignition is off there is a continuous supply of voltage to the ECM for its memory function and other information on regarding air/fuel ratio etc.
DTC Confirmation Procedure
Before starting the test, switch off the ignition and wait for 10 seconds.
With Consult II. With GST
Switch on ignition and wait for 1 second Perform
Click on Data Monitor mode the
*Start and idle engine for 1 second same
Switch off ignition, wait for 10 seconds, switch on steps
Repeat step* 4 times as
DTC observed > Diagnostic Procedure with Consult II
Input or output voltage should not be measured by using the ECM ground terminals.
1. Check: ECM power supply
Switch off ignition
Disconnect the harness connector to the ECM
Between the ground and ECM terminal 121 check the voltage (Battery)
OK: proceed to step 3 Not OK: proceed to step 2
2. Find: The malfunctions check the following:
Harness connector E14 of IPDM/ER
For open/short in harness between ECM & IPDM E/R
Repair / replace – harness / connectors
3. Check: for intermittent incident
Refer to Trouble Diagnosis for Intermittent Incident
OK: proceed to 4 Not OK: repair/replace harness/connectors
4. Perform: procedure for DTC confirmation
With CONSULT-II With GST
Switch on ignition Switch on ignition
Click on Self Diagnosis Results mode Click on Mode 4
Put your finger on Erase Put your finger on Erase
Proceed> DTC Confirmation Procedure Proceed> DTC Confirmation Procedure
1st trip DTC P1O65 is observed? 1st trip DTC P1O65 is observed?
If not > end of inspection If not > end of inspection
If so > Replace the ECM If so > Replace the ECM