Trouble Code 28 (Fault Display)
FAULT DISPLAYExplanation
This defect code is stored when the fault display wire has a short to positive or ground.
Effect of defect
No or incorrect fault display
Possible cause
Wire from Pin 33 to instrument cluster defective.
Troubleshooting
The fault display is activated by the control unit at Pin 33. Normally (engine running, no fault), the level is referred to ground. If the line has a break or a short to positive the instrument cluster sends the error message (transmission) at an engine speed greater than approx. 500 rpm. Check wire in accordance with schematic.