Fault diagnosis
- Make
- Fiat
- Model
- Punto (176) Factory Service Manual
- Year
- 1993–1999
- Section
- Automatic transmission (Selecta, '96 update) › Fault diagnosis
21 Gearbox and differentialFault diagnosis
FAULT DIAGNOSIS
| Fault detected | Causes and corrective actions |
|---|---|
| Parking device does not operate with vehicle on a gradient | 1) Check transmission lever position corresponds to switch 2) Replace the transmission if the fault persists |
| Oil leaks | 1) Main points to check and adjust if necessary: - Oil sump - Oil drain plug - Kick-down cable sealing ring - Heat exchanger and lines - Right and left hand outlet fitting - Secondary pressure outlet sealing ring - Transmission intake fitting 2) Change transmission if fluid leaks occur from other points or cannot be mended |
| Vehicle will start with the selector lever in any position | 1) Check multifunction switch adjustment 2) Check electrical connections 3) Check transmission cable adjustment |
| Vehicle moves forward or backward during start-up with lever on "N" or "P"" | 1) Check and adjust transmission control cable 2) Change the transmission if the defect persists |
| Engine cannot be started with the selector lever on "P" or "N"" | 1) Check transmission cable adjustment 2) Check electrical connections 3) Check multifunction switch |
| Gear selection system does not work properly | 1) Check and adjust the gear cable 2) Check condition of electromagnetic clutch supply brushes and connections 3) Check setting of both microswitches on the accelerator pedal 4) Replace the transmission and clutch if the defect persists |
| No pulling power in "D", "L" or "R" with the accelerator pedal depressed | 1) Check fluid level in transmission 2) Check and adjust the gear selector lever 3) Check clutch closure using a Fiat-Lancia Tester 4) Check transmission position with multifunction switch 5) Check setting of both microswitches on the accelerator pedal 7) Check transmission fluid pressure 8) Replace the electronic control unit if the defect persists 9) Replace the transmission and clutch if the defect persists 6) Check condition of electromagnetic clutch supply brushes and connections |
Parts & tools for this job For 1993 Fiat Punto
- PARTTransmission filter kitSearch: Fiat Punto 1993 transmission filter kit
- FLUIDAutomatic transmission fluidSearch: Fiat automatic transmission fluid
- TOOLFluid transfer pumpSearch: fluid transfer pump
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