Nissan Versa (N17): U0073 Communication bus a off

Nissan Versa 2nd generation (N17) Service Manual / Transmission & driveline / Transaxle & transmission (TM) / U0073 Communication bus a off

DTC Logic

DTC Trouble diagnosis name DTC detecting condition Possible causes
U0073

Control Module Communication Bus "A" Off

 When the ignition switch is ON, TCM detects a bus-off error continuously for 2 seconds or more. Harness or connector (CAN communication line is open or shorted)

DTC CONFIRMATION PROCEDURE

1.PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn the ignition switch OFF and wait for at least 10 seconds, then perform the next test.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

  1. Start engine and wait for at least 5 seconds.
  2. Check the DTC.

Is "U0073" detected?

YES >> Go to TM, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

For the diagnosis procedure, refer to LAN, "Trouble Diagnosis Flow Chart".

Line pressure test

Work Procedure INSPECTION Inspect the amount of engine oil. Replenish the engine oil if necessary. Refer to LU, "Inspection". Drive for about 10 minutes to warm up the vehicle so ...

U0100 Lost communication (ECM A)

DTC Logic DTC DETECTION LOGIC DTC Trouble diagnosis name DTC detection condition Possible causes U0100 Lost Communication With ECM/PCM "A" When the ignition switch ...

Other materials:

Throttle valve closed position learning
Description Throttle Valve Closed Position Learning is a function of ECM to learn the fully closed position of the throttle valve by monitoring the throttle position sensor output signal. It must be performed each time harness connector of electric throttle control actuator or ECM is discon ...

Mainshaft and gear
Exploded View 1. Mainshaft front bearing 2. Mainshaft 3. 1st main gear 4. 1st inner baulk ring 5. 1st synchronizer cone 6. 1st outer baulk ring 7. 1st-2nd synchronizer hub 8. 1st-2nd coupling sleeve 9. Spring 10. Insert key 11. 2nd outer baulk ring 12. 2nd synchronizer cone 13. 2nd inner b ...

Categories


© 2017-2025 Copyright www.niveguide.com
0.009