Page 23 of 36
24-144
      
-  Press buttons -0-, -0- and -3- to input display 
group number 3 (003), and press -Q- button to 
confirm input. Read Measuring Value Block 3 1 2 3 4 
    
Indicated on display (1-4 = display fields)  
-  Compare display with specified values for throttle angle, (display field 
3): 
  
Display fields  
  
1   2   3   4  
Display group 3: Load measurement  
Display   xxx RPM   xx.x g/s  
xxx   
xx.x  BTDC  
Indicates   Engine speed  
(in 40 RPM 
steps)  Mass air 
flow  Throttle angle   Ignition timing  
Range   0 - 6800 RPM   ---  
0 - 90    
0.0 - 50.0 
BTDC  
Specified 
value  0 RPM   ---  
0 - 5    
0.0   
  
---   ---   If not as specified   page 24
-146
 , Evaluation of 
display group 3  
---  
- 
Open throttle valve slowly while monitoring degree ( ) value in display field 3.    Value must increase uniformly over the entire range.
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        Page 25 of 36
24-145
      
-  Press buttons -0- and -6- to select "End Output" 
function 06, and press -Q- button to confirm 
input. 
     
-  Switch ignition off.
     
Note:  
     The values displayed in display field 3 depend on 
the calibration of the Throttle Position (TP) 
sensor and do not correspond with the actual 
throttle valve opening in degrees. The maximum 
displayed value is 90.0  .       If the throttle angle value does not increase 
uniformly:  
     
-  Replace throttle valve control module -J338-.
     
-  Carry out adaptation of throttle valve control 
module to ECM   page 24
-150
 . 
     
- Check readiness code   page 01
-70
 . If 
Diagnostic Trouble Code (DTC) memory has 
been erased, or ECM was disconnected, 
generate new readiness code   page 01
-73
 . 
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        Page 26 of 36
24-146
 Evaluation of display group 3  Display 
group: 3  
  
  
Display field: 
3  
Possible malfunction cause  
Corrective action  
0.0   
 Open circuit or short circuit to B+ in signal wire between throttle position 
sensor -G69- and engine control module 
 Malfunction in Ground for -G69-- Check wiring   page 
24
-147
 
99.0   
 Short circuit to Ground in signal wire between throttle position sensor -G69- 
and engine control module 
 Malfunction in voltage supply for -G69-  
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        Page 33 of 36

24-151
      
Test procedure  
     
-  Connect VAG1551 or VAG1552 scan tool and 
press buttons -0- and -1- to insert "Engine 
Electronics" address word 01 (with ignition 
switched on; engine not running)   page 01
-8 . 
Rapid data transfer 
HELP
Select function XX
    
Indicated on display  
-  Press buttons -0- and -4- to select "Basic Setting" function 04, and 
press -Q- button to confirm input. 
System in Basic Settin
g 
HELP
Input displa
y group number XXX
    
Indicated on display  
-  Press buttons -0-, -6- and -0- to input display group number 60 (060), 
and press -Q- button to confirm input. 
System in Basic Setting 60 1 2 3 4 
    
Indicated on display (1-4   display fields)  
Notes: 
After confirming input of display group 60, adaptation is started. The 
Throttle Position (TP)sensor is positioned in the closed throttle, wide 
open throttle and limp-home positions. Following this procedure, other 
intermediate steps will create a characteristic curve of the relationship 
between Throttle Position (TP) sensor -G69- and angle sensor for 
throttle drive -G187-. The Motronic ECM stores these values in permanent memory. 
Afterward, the throttle valve assumes the starting position. 
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        Page 34 of 36
24-152
      
-  Compare display with specified values (display 
fields 1-4): 
  
Display fields  
  
1   2   3   4  
Display group 60: Basic setting-throttle valve control module  
Display  
xxx   
xxx   
Idle  
Part throt  
Full throt  
Decel  
Enrich  ADP runs  
ADP. OK  
ADP. ERROR  
Indicates   Throttle valve 
angle  Throttle drive 
angle  Operating 
condition  Adaptation condition  
Range  
0 - 90    
---   ---   ---  
Specified 
value  1 - 10    
(automatic trans.)  
1 - 20    
(manual trans.)  ---   Idle   ADP. runs  
  
0 - 5    
0 - 5    
Idle   ADP. OK  
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        Page 35 of 36
(ADP. ERROR indicates unsuccessful 
adaptation)  
  
   If displayed values are NOT OK:  
- Check DTC memory (   page 01
-16
 ) 
- Check throttle valve control module (   page 24
-128
 )
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        Page 36 of 36
24-153
      
-  End adaptation as soon as possible after 30 
seconds by pressing  button.       If displayed values are OK:  
     
-  Press buttons -0- and -6- to select "End Output" 
function 06, and press -Q- button to confirm 
input. 
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