engine wiring diagrams

2003 TOYOTA COROLLA
12,000 MILES
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ENOCH ADDO BOADI
  • MEMBER
  • 1 POST
recently I noticed sometimes the engine is unstable and as soon as I hit a pothole or climb a speed ramp then the engine goes totally, so I will have to restart again.
Dec 29, 2019 at 12:08 AM
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SCGRANTURISMO
  • CERTIFIED EXPERT
  • 4,897 POSTS
Hello,

This sounds like you could have an intermittent or bad electrical connector or wires going to your vehicle's Crankshaft Position Sensor[CKP]. In the diagrams down below I have include the location of the CKP in your vehicle along with the engine management wiring diagrams with the CKP wires highlighted for you and guides on finding intermittent conditions and inducing intermittent conditions in an automotive electrical circuit. You will need to be able to use a Digital Multi-meter [DMM], so here is a link to a guide below explaining how to use one:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Please go through these guides and get back to us with what you find out. Happy Holidays.

Thanks,
Alex
2CarPros
Aug 10, 2020 at 12:49 PM