AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Owner's Manual

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Owner's Manual A4 1996 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1077/w960_1077-0.png AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Owner's Manual
Trending: relay, oil, wiring, check engine, check oil, fuse diagram, battery

Page 21 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Owners Manual 28-20
 
    
If no malfunctions are detected:  -  Check following wire connection for open circuit and short circuit to 
Ground (GND) and B+: Relay carrier below left cover, at bulkhead  
Terminal  
V

Page 22 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Owners Manual 28-21
 
  
Intake Air Temperature (IAT) sensor -G42-, 
checking
 
Special tools and equipment  
 
VAG1526A
 VAG1594A
 VAG1598/31
 VAS5051 with VAG5051/1
- or 
 VAG1551 with VAG1551/3A
Pa
ge 22 of 59 I

Page 23 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Owners Manual 28-22
       Component location   Overview of component 
locations  Page 24
-5   
     
Test sequence  
     
-  Connect VAS5051 tester or VAG1551 scan tool 
and select control module for engine elect

Page 24 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Owners Manual 28-23
 
  
Display fields  
  
1   2   3   4  
Display group 004: Intake Air Temperature (IAT), engine at idle  
Display   xxxx/min   xx.x volts  
xxx.x C  
xxx.x C  
Indicated  Engine speed 
(RPM)  B

Page 25 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Owners Manual 28-24
      
Checking wire connections  
     
-  Connect VAG1598/31 test box at wiring harness 
to Engine Control Module (ECM), do not connect 
ECM  Page 24
-19
 . 
    
-  Disconnect connector -1- a

Page 26 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Owners Manual 28-25
       If no malfunctions are found in wires:  
     
Check sensor:  
    
Specified values  
If specified value is not obtained:  -  Connect multimeter at sensor for resistance measurement.Temp

Page 27 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Owners Manual 28-26
 
  
Engine speed (RPM) sensor -G28-, 
checking
 
Special tools and equipment  
 
VAG1526A
 VAG1594A
 VAG1598/31
Pa
ge 27 of 59 I
gnition s
ystem, checkin
g
11/21/2002 htt
p://127.0.0.1:8080/aud

Page 28 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Owners Manual 28-27
       Component location   Overview of component 
locations  Page 24
-5   
     
Note:  
     The engine speed (RPM) sensor detects RPM 
and reference marks. The engine cannot be 
started witho

Page 29 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Owners Manual 28-28
 
    
Note:  
Resistance value of the engine speed (RPM) sensor is based on a 
temperature of 20 C. Resistance increases as temperature increases. 
If specified value is not obtained:  
If spec

Page 30 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Owners Manual 28-29
       If specified value is obtained:  
     
-  Connect VAG1598/31 test box at wiring harness 
to Engine Control Module (ECM), do not connect 
ECM  Page 24
-19
 . 
    
If no malfunctions are
Trending: relay, battery, coolant reservoir, wiring, sensor, check engine, oil