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Vehicle » Powertrain Management » Computers and Control Systems » Technical Service Bulletins » By Symptom » Customer Interest » Fuel System - Poor Acceleration, Lack of Power  
 
 
  Fuel System - Poor Acceleration, Lack of Power  
 
Classification:
EC14-016

Reference:
NTB14-107

Date:
November 20, 2014

NISSAN; DIAGNOSIS OF POOR ACCELERATION OR LACK OF POWER

APPLIED VEHICLES: All Nissan vehicles with an Electric Throttle Chamber

SERVICE INFORMATION

If a customer describes lack of power or poor acceleration, perform the following checks before attempting any repair:

^ Check for stored DTCs.

^ Check if the driver is resting their left foot on the brake pedal while accelerating. Advise the customer not to rest their foot on the brake while accelerating.

^ Use CONSULT-III plus in Engine Data Monitor to check operation of the brake lamp circuit signal. Monitor the brake switch during the incident; it should be "OFF".

Causes of brake switch "ON":

^ Brake switch incorrectly adjusted (switch is adjusted ON when it should be OFF).

^ Damaged brake lamp wiring/circuit (damage causes signal to ECU to show ON when it should be OFF).

NOTE : Refer to the Electronic Service Manual (ESM) for correct brake switch adjustment and/or circuit diagnosis as applicable.

  

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