Share

Monday, September 27, 2010

How to Repair Battery Indicator Lights On Code U1112

How to Repair Battery Indicator Lights On Code U1112.

 

 

2010  G 3.8 DOHC  Engine  Unleaded EOBD  U1112 LIN Communication Error

 

 

Auto Repair and Study Guide w/ Component Location

clip_image004

Study Guide and General Description

Many control units have applied to vehicle as it becomes more eletrolnical. These units control their own system based on information from diverse sensors. Therefore necessity of common use of diverse sensor information and importance of stable power supply are gathering strength. Battery sensor is mounted on battery (-) terminal. It transmits battery voltage, current, temperature information to ECM. ECM controls generating voltage by duty cycle based on these signals.

Auto Repair w/ DTC Description

ECM sets this code when there is an error in LIN communication line.

DTC Detecting Condition

Item

Detecting Condition

Possible cause

DTC Strategy

Signal Monitoring

 

 

=Open or short in LIN communication line

=UCU or ECM

EnableConditions

Engine Run Time  2sec.

Ignition Voltage  11V

Threshold value

LIN communication error

Diagnosis Time

Continuous

MIL On Condition

NO MIL ON(DTC only)

Diagnostic Circuit Diagram

Signal Waveform & Data

clip_image005

More case and Repair Study

0 comments:

Post a Comment