P1780 · blink 97 – NEUTRAL START SWITCH MALFUNCTION
- System
- ECT U340E
- Dashboard light
- Malfunction indicator lamp (Check Engine)
- Check-engine blink code
- 97
- Market note
- Hong Kong only
- Applies to
- 4-speed A/T U340E. PK: ZZE122R-GEPNKP 1.8 auto from 07.2005 (EPC fig 3501/3512 note (0507- )ATM..PKN); JDM NZE121 1NZ autos
- Description
- NEUTRAL START SWITCH MALFUNCTION
- Detection / symptoms
- Detection: 2 or more switches are ON simultaneously for ”N”, ”R”, ”2” or ”L” range. (2−trip detection logic) When driving under the conditions (a), (b) and (c) for 30 se- conds or more, the park/neutral position switch is ON (N posi- tion). (2−trip detection logic) (a) Vehicle speed: 80 km/h (50 mph) or more (b) Engine speed: 1,500 − 5,000 rpm (c) Manifold absolute pressure: 300 mmHg or more
- Possible causes
- Wire harness; Neutral start switch; Engine ECU
- What to check
- Workshop check order (RM821E): READ VALUE OF HAND−HELD TESTER -> CHECK ENGINE ECU FUNCTION -> INSPECT NEUTRAL START SWITCH ASSY -> CHECK WIRE HARNESS AND CONNECTOR(Neutral Start Switch Assy − ECU)
- Confidence
- high (official Toyota RM821E)
From the factory service material. Clear the code and test-drive to confirm it returns. Search all fault codes · Common problems · Warning lights