Got a code P1382. Checked the #3 to #4 wires in the plug coming out of dist. 0 ohms of resistance.

KENSTEPSUREWESTNET

MEMBER
1998 HONDA ACCORD
178,000 MILES

That indicated to me that I needed a new CYP sensor. Can't buy the sensor, had to order a new distributor housing. Bought OEM housing from Majestic Honda via the internet. It arrived, took coil and ignitor from old housing, put in new housing. No brainer. Also replaced cap, rotor, plug wires and plugs, all new OEM parts from same Majestic Honda.

Installed new housing, and associated parts. Started car, same error code and same rough idle.

Did the same diagnostic check as before on pins 3 and 4 of the wire plug coming out of the dist. Same reading. Instead of the expected approx. 800 ohms, got a reading of 0.

Took new housing out, took cap off, checked resistance between the to connectors right at the CYP. Reading zero.

I'm stumped and wondering if the part could have been bad from Hitachi. Attempted to contact Majestic Honda, but have not yet received a reply.

I regret not checking the resistance through the CYP prior to installation, but assumed a new part would be good. I don't see what else it could be since the first test at the dist wires pretty much rules out everything but the CYP.

Any ideas?

Thanks
Ken

5 Replies

KHLOW2008

MECHANIC
41,814 POSTS

The OBD-II code P1382 issue with the Cylinder Position Sensor (CYP) Sensor.

Which type of terminals do you have? Did you measure across the correct terminals?

Not all things new are good but if it is OEM, the percentage of it being bad would be low.

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Friday, August 31st, 2012 AT 3:55 AM

KENSTEPSUREWESTNET

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I have the pins that are pictured on the left of the diagram. I think stated that I tested across pins 3 and 4. I also stated that I took the cap of and went directly to the CYP itself. Nothing else in the picture, just the two terminals that attach to the CPY, no wire in the way that could be shorted to ground. Still the same reading, no resistance. It is exactly the same as my original bad CPY, only this housing is brand new, where the other housing had a worn shaft that allowed oil to seep inside the distributor and over time, short out the CYP. According to the same diagnostic instructions that contain the picture you sent me, if you don't have approx. 800 ohms at the terminals 3 and 4 (or even further, at the CYP itself), the search is over, the CYP is bad. You don't need to look any further. No signal is being sent from this sensor to the ECU from the CYP. Nothing besides the two wires coming from the CYP are even connected to the CYP. The igniter and the coil are in the distributor, but then don't connect or interface with the CYP There is a small narrow magnet on the distributor shaft that induces an electrical impulse in the CYP as it passes the CYP, (it is like a transformer). Then this generated signal is sent to the ECU to inform the ECU of the position of the crank when the #1 cylinder is at TDC. The ECU uses this info to adjust the timing.

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Friday, August 31st, 2012 AT 4:18 AM

KHLOW2008