Where is the neutral switch located?

[mp3josh]

Where is teh god forsaken neutral switch located?

 

[Bigg Tim]

http://protege5.ugly.net/05-15B.PDF

It looks like it's on the bell housing side of the tranny on the top. Look at this PDF and it shows where it is.

 

[mp3josh]

gosh darnit, I have already replaced that with a new one and I am still having issues....

p0705 is what I am getting. I have checked everything including the wiring, grounds and plugs to see what is up. But to no avail...

 

[Bigg Tim]

That sucks, it says that it could be the nuetral switch, an open in the harness between the switch terminal A and the PCM terminal 64, or a malfunction in the PCM. Try to test the connectivity between the switch and the ECU......disconnect the battery first of course.

 

[madhatter]

gosh darnit, I have already replaced that with a new one and I am still having issues....

p0705 is what I am getting. I have checked everything including the wiring, grounds and plugs to see what is up. But to no avail...

You've checked the fuses, right?

/just sayin....

 

[mp3josh]

I have done all of these but replace the ecm...


Diagnostic procedure

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED

* Has FREEZE FRAME DATA been recorded?

Yes Go to next step.
No Record FREEZE FRAME DATA on repair order, then go to next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY

* Check for related Service Bulletins availability.
* Is any related repair information available?

Yes Perform repair or diagnosis according to available repair information.

* If vehicle is not repaired, go to next step.

No Go to next step.
3 INSPECT NEUTRAL SWITCH SIGNAL CIRCUIT FOR SHORT TO POWER

* Connect breakout box with PCM connector disconnected.
* Disconnect neutral switch connector.
* Turn ignition key to ON (engine OFF).
* Measure voltage between breakout box terminal 64 (harness-side) and body ground.
* Is voltage B+ ?

Yes Repair or replace harness for short to power, then go to Step 9.
No Go to next step.
4 INSPECT POOR CONNECTION OF NEUTRAL SWITCH CONNECTOR

* Turn ignition key to OFF.
* Disconnect neutral switch connector.
* Check for poor connection (damaged/pulled-out terminals, corrosion, etc.).
* Is there malfunction?

Yes Repair or replace terminal, then go Step 9.
No Go to next step.
5 INSPECT NEUTRAL SWITCH SIGNAL CIRCUIT FOR OPEN

* Make sure to reconnect all disconnected connectors.
* Turn ignition key to ON (engine OFF).
* Measure voltage between neutral switch terminal A (harness-side) and body ground.
* Is voltage B+ ?

Yes Go to next step.
No Repair or replace neutral switch signal circuit for open, then go to Step 9.
6 INSPECT POOR CONNECTION OF PCM CONNECTOR

* Turn ignition key to OFF.
* Disconnect PCM connector.
* Check for poor connection at terminal 64 (damaged/pulled-out terminals, corrosion, etc.).
* Is there malfunction?

Yes Repair terminal, then go to Step 9.
No Go to next step.
7 INSPECT NEUTRAL SWITCH CONNECTOR CIRCUIT FOR OPEN

* Disconnect neutral switch connector.
* Turn ignition key to ON (engine OFF).
* Depress clutch pedal and measure voltage between neutral switch terminal A (harness-side) and body ground.
* Is voltage below 1.0 V ?

Yes Go to next step.
No Repair or replace harness for open, then go to Step 9.
8 INSPECT NEUTRAL SWITCH SIGNAL CIRCUIT FOR OPEN

* Turn ignition key to OFF.
* Connect breakout box with PCM connector disconnected.
* Turn ignition key to ON (engine OFF).
* Depress clutch pedal and measure voltage between breakout box terminal 64 and body ground.
* Is voltage below 1.0 V ?

Yes Go to next step.
No Repair or replace harness for open, then go to Step 9.
9 VERIFY TROUBLESHOOTING OF DTC P0705 COMPLETED

* Make sure to reconnect all disconnected connectors.
* Start engine.
* Clear DTC from PCM memory using WDS or equivalent.
* Drive vehicle above 29.8 km/h {18.5 mph} and stop vehicle.
* Depress and release clutch pedal more than 10 times during drive cycle.
* Is same DTC present?

Yes Replace PCM, then go to next step.
No Go to next step.
10 VERIFY AFTER REPAIR PROCEDURE

* Perform "After Repair Procedure".

(See AFTER REPAIR PROCEDURE [FS] .)
* Is there any DTC present?

Yes Go to applicable DTC inspection.

(See DTC TABLE [FS] .)
No Troubleshooting completed.

 

[reuben_j]

Do you actually have the breakout box?

If you don't, what was your process for testing the switch operation?

Also, if you have a pc controllable obdii reader, does your software interface have any status variables for that switch?

rj

 

[mp3josh]

no I used a multi meter and saw if there were any changes in voltage.

 

[reuben_j]

Ok, where was your measuring point?

I'm assuming you saw the proper voltages of <1.0V in one position, and B+ in the other position with the switch attached on the tranny?

 

[mp3josh]

yes sir

 

[reuben_j]

Measuring point was where?

Also, did you ohm out connection from the ECU pin connector to the switch connector, with the ECU de-attached, and switch connector detached from the switch?

 

[mp3josh]

I did both sides of the switch.

 

[xbbmazda]

I want to know this as well, bump

 

[reuben_j]

I did both sides of the switch.

ok, try doing this: ohm out connection from the ECU pin connector to the switch connectors, with the ECU de-attached, and switch connector detached from the switch. you will want to disconnect the battery as well. this will verify there is not a break in the wire between the switch and ECU.

i don't have the schematics of the protege ECU, but they should be the same as my ECU.

pin #64 should be the neutral switch output
pin #91 should be the neutral switch gnd

if either of these pins don't ohm out from the ECU connector to the switch, you have a bad wire connection (assuming you tested the switch already).

 

[dominoy2k1]

bump because i am having the same problem. car started to buck at around 3krpms after getting this code.

 

[mp3beast]

i am having the same problem. i already replaced harness and switch yet still have the same code. could the mp3 have a different part number for the switch? does someone have the actual part number to compare it? i am starting to get a headache over this damn code.

 

[mp3beast]

(hear ya)

 

[mp3beast]

ok so someone suggested to replace the clutch switch. wouldnt a bad clutch switch cause issues starting car?

 

[mp3beast]

wtf replaced clutch switch no difference. good thing i was able to return it. anyone have any other ideas?