5000S Sedan L5-2226cc 2.22L SOHC (KZ) (1985)
Trip Computer: All Technical Service Bulletins
Troubleshooting
Test Note:
If defective components are found while troubleshooting, check wiring to components using the current flow diagram.
Defect
Possible Cause
Remedy
^
No display on computer fuses S4 and S12 check fuses computer module check computer
^
Time of day displayed only function selector switch check function selector switch
^
All functions expect time of day are displayed
^
Time cannot be set
^
Elapsed time, average fuel consumption and average speed functions cannot be set to zero with the reset button
^
A different function cannot be chosen
^
no reading on speedometer speedometer and/or check speedometer and cable and no average speed display
speedometer cable
^
no average speed display Hall sender for measuring check Hall sender for speed, computer module or speed input to
computer
^
km/h display remains at zero connections for computer after pressing reset and cruise control interchanged check computer
button while car is moving
^
average fuel consumption (mpg)
^
after pressing reset button, display remains at approx. 200 or at approx. 15.5 mpg.
^
instantaneous fuel consumption (mpg)
^
display varies between approx. 5 and 200
Troubleshooting
Defect
Possible Cause
Remedy
^
Instantaneous fuel consumption air flow sensor control (short circuit check air flow sensor control (see (mpg) or break
in wiring) US KE-Jetronic manuscript)
^
displayed reading decreases while driving or remains at zero (mpg)
^
displayed reading increases while driving or remains at 200
Note:
On vehicles with fuel deceleration shut-off, (---) is displayed during the shut-off phase in US-vehicles
^
average fuel consumption (mpg)
^
displayed reading decreases while driving or remains at zero (mpg)
^
displayed reading increases while driving or remains at 200
^
Range (miles)
^
displayed reading increases faster than normal or remains permanently at 2000
Troubleshooting
Defect
Possible Cause
Remedy
^
Instantaneous fuel consumption Enrichment factor of the KE-Jetronic Check enrichment factor
(mpg)
(short circuit between terminal 23
of the KE-Jetronic
of the KE-Jetronic and terminal
^
Fuel deceleration shut-off 10 of the 10 point connector of the