DTC P1400/105. ECM harness problem! - Nissan 240SX Forums
 

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Old 11-29-2010, 04:31 PM   #1 (permalink)
 

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Exclamation DTC P1400/105. ECM harness problem!

If any of you guys have the FSM for 95 ka24de, you'll need to look at EC 188-191.

Original thread that began this: http://www.240sxforums.com/forums/ka...e-install.html.

So I am attempting to fix the P1400 code for EGR and canister control solenoid valve, cause I figure it was contributing to my sputtering problem and whatnot. I go to check continuity with a voltmeter from the ECM harness to the subharness, and guess what? No connection inside the ECM harness connector!




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On step B, there is supposed to be continuity between terminal 103 on the ECM harness and B on the subharness connector for the solenoid valve. But there is no wire or nothin inside terminal 103. How can that be? Am I gonna have to do the whole wiring harness job to fix it? Any bypasses?

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Old 12-05-2010, 02:40 PM   #2 (permalink)
 

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Wow are these forums dead? 6 days and not one reply.
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Old 12-08-2010, 12:46 PM   #3 (permalink)
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You can try bypassing it, but just for S&G's

Instead of counting from the face of the plug, like you have it pictured, count it from the rear, were the wires enter and see if you have a connection.

Since you have the FSM.

Get the wire color code, and then find the wire in the harness.
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Old 12-08-2010, 04:24 PM   #4 (permalink)
 

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You can try bypassing it, but just for S&G's

Instead of counting from the face of the plug, like you have it pictured, count it from the rear, were the wires enter and see if you have a connection.

Since you have the FSM.

Get the wire color code, and then find the wire in the harness.
Wow you are correct that you are supposed to read the wiring diagram from the backside of the harness connector. The terminal I circled in green is actually terminal 115 which is not listed in the FSM.

Thanks for that. Looks like I just need to replace the EGR and canister control solenoid valve.
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Old 12-08-2010, 08:37 PM   #5 (permalink)
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Wow you are correct that you are supposed to read the wiring diagram from the backside of the harness connector. The terminal I circled in green is actually terminal 115 which is not listed in the FSM.

Thanks for that. Looks like I just need to replace the EGR and canister control solenoid valve.

outstanding.

Happy to help....

In the 13 years of messing with my 240SX, I have found wire colors on the ECU connector easier to find than the pins...
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Old 12-08-2010, 09:18 PM   #6 (permalink)
 

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Yeah haha. I checked the continuity on the terminals and it's all good. Hopefully now replacing that EGR part will fix my other problem in my other thread.

Look at the first post and check that thread, maybe you'll have some more good advice haha.
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