Ran diagnostic...Help me start my car!!!

Discuss the RB20, RB25 and RB26 series engines.
modestmouse
Posts: 86
Joined: Sun May 16, 2004 4:54 am

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Hi guys, I've finished the wiring for my RB20 so I went ahead and ran a diagnostic check on the ECU and got a bunch of codes. I got 13, 14, 21, and 43, which are the Coolant Temp Circuit, Vehicle Speed Sensor Circuit, Ignition Circuit, and Throttle Position Circuit respectively.

I'm not worried about the first two b/c my speed sensor and coolant sensor to the ecu aren't hooked up. But besides that, everything should work. I will say though, that the motor is DEAD when it turns over. No signs of starting (besides the starter working). I'm not so sure what to do. Thanks for your help in advance!


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fast_s13
Posts: 737
Joined: Sun Feb 23, 2003 2:28 pm

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make sure you have power to both the green releys thats what caused mine not to start

modestmouse
Posts: 86
Joined: Sun May 16, 2004 4:54 am

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What specifically do I have to do. They don't click be the way.

FAST-DATSUN
Posts: 1019
Joined: Tue Oct 22, 2002 9:46 am
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Coolent temp sensor is the one with 2 wires and goes to the computer and MUST be hooked up !!!!!!!!! do basic trouble shooting, do you have spark, fuel, injectors working?? static timing correct??? no open vac hoses???

modestmouse
Posts: 86
Joined: Sun May 16, 2004 4:54 am

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Even with the coolant sensor hooked up, the ECU throws codes. I do have fuel, the injectors do click. No loose hoses and the timing is unchanged whether it's correct or not. The problem is the relays and the ground to the ECU. I can't find the ground to the ECU and that (i think) is what is causing the codes.

modestmouse
Posts: 86
Joined: Sun May 16, 2004 4:54 am

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Got the car running no thanks to you guys!


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