Nissan Sentra Service Manual: Vehicle jerks during vdc/tcs/abs control
Diagnosis Procedure
1.SYMPTOM CHECK
Check if the vehicle jerks during VDC/TCS/ABS control.
Is the inspection result normal? YES >> Inspection End.
NO >> GO TO 2
2.CHECK SELF DIAGNOSTIC RESULT
Perform self diagnostic result of ABS actuator and electric unit (control unit). Refer to BRC-31, "CONSULT Function (ABS)".
Are self diagnostic results indicated? YES >> Check corresponding items, make repairs, and perform ABS actuator and electric unit (control unit) self diagnostic result again. Refer to BRC-31, "CONSULT Function (ABS)".
NO >> GO TO 3
3.CHECK CONNECTOR
-
Turn ignition switch OFF.
-
Disconnect ABS actuator and electric unit (control unit) connector.
-
Check terminals for deformation, disconnection, looseness, etc.
-
Securely reconnect connector and perform ABS actuator and electric unit (control unit) self diagnostic result. Refer to BRC-31, "CONSULT Function (ABS)".
Are self diagnostic results indicated? YES >> If poor contact, damage, open or short circuit of connector terminal is found, repair or replace.
NO >> GO TO 4
4.CHECK ECM AND TCM SELF DIAGNOSTIC RESULT
-
Perform ECM self diagnostic result. Refer to EC-66, "CONSULT Function".
-
Perform TCM self diagnostic result. Refer to TM-108, "CONSULT Function".
Are self diagnostic results indicated? YES >> Check the corresponding items.
-
ECM: Refer to EC-94, "DTC Index".
-
TCM: Refer to TM-126, "DTC Index".
NO >> Replace ABS actuator and electric unit (control unit). Refer to BRC-110, "Removal and Installation".
Pedal vibration or abs operation
sound occurs
Diagnosis Procedure
CAUTION:
Under the following conditions, ABS is activated and
vibration is felt when brake pedal is lightly
depressed (just place a foot on it). However, this is norma ...
Normal operating condition
Description
Symptom
Result
Slight vibrations are felt on the brake pedal and operation noises
occur when VDC, TCS or ABS is activated.
This is a normal condition
due to t ...
Other materials:
Basic inspection
Diagnosis and repair workflow
Work Flow
Detailed flow
1.Interview from the customer
Clarify customer complaints before inspection. First of all,
perform an interview utilizing stc-20, "diagnostic
work sheet" and reproduce symptoms as well as fully understand it. Ask customer
abou ...
How to use this manual
How to use this section
Information
“Can” of lan section describes information peculiar to a vehicle and
inspection procedures.
For trouble diagnosis procedure, refer to lan-16, "trouble diagnosis
flow chart" of “can fundamental”.
Abbreviation list
Unit ...
P0171 Fuel injection system function
DTC Logic
DTC DETECTION LOGIC
With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture
ratio can be brought closely to the
theoretical mixture ratio based on the mixture ratio feedback signal from the
A/F sensors 1. The ECM calculates
the necessary compensation to correct th ...
