engine wiring diagrams

2003 TOYOTA COROLLA

12,000 MILES

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 28, 2019 at 4:08 PM

SCGRANTURISMO

✓Experienced Mechanic
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

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