I just swapped an h22a into my Ek and my cel is throwing a map sensor code. So i figured id take a look at the sensor so i can begin to diagnose the problem but low and behold I cant seem to locate it. Im not very familiar with h-series so i was wondering if someone could please tell me where to look for the map sensor.

 

It should be on top of the throttle body

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by oneprelude &raquo;</TD></TR><TR><TD CLASS="quote">It should be on top of the throttle body</TD></TR></TABLE>

no its not there

 

If it's not on the TB, it would have been mounted on the firewall behind the TB. So just get a MAP sensor and hook it up and mount it anywhere.

Is it running without a MAP sensor? I would be surprised if it was

 

it was running yesterday but today it wont start

 

So then you should have a MAP sensor somewhere.....someone could mount it anywhere they wanted as long as it was plugged in and had a vacuum line going to it. I would check around in the engine bay for it.

 

I did the swap myself. The only sensor on or near the throttle body is the tps.

 

So you have no MAP anywhere? Do you have the empty connector to plug into it?

 

I had a couple extra plugs, one was for my o2 sensor and the other is this one below which i dont know where it goes. Its loacted underneath right next to my oil filter.

There are 3 wires:gree/black, brown/black, yellow /red


What is this sensor?


Then here is the top of my throttle body with the sensor on the left side. Sorry for the shadow.

 

found a small pic of where map sensor is on the lude


http://images.sportcompactcarw...s.jpg

 

[QUOTE=hatchbkdrvr]

What is this sensor?


EGR

 

The map sensor uses the same type of plug as tps and egr right?
I dont have a loose plug for a map sensor so what am i supposed to do?

 

Im using a p72 so i guess the ecu isnt even looking for the egr. Do i need to plug the plug that is connected to the egr to a map sensor and mount the map to my firewall?

 

In the picture of the throttle body theres an emty vacuum line that I'm pretty sure is for the map sensor. So for that throttle body looks you need to get a map sensor and hook it up to a vacuum hose to that line.

 

yeah thats what im thinking too but which plug do i use?

 

This should help you determine which plug is which


A1 brn Injector #1
A2 yel Injector #4
A3 red1 Injector #2
A4 grn/yel VTEC Solenoid Valve
A5 blu Injector #3
A6 or/wht HO2S heater coil
A7 grn/blk1 PGM-FI Main Relay coil
A8 grn/blk2 Shorted to A7
A9 blk/blu IAC Valve
A10 - -
A11 red2 EGR Control Solenoid
A12 blu/red Condenser Fan Relay
A13 blu/wht MIL
A14 - -
A15 red/blu A/C Clutch Relay
A16 wht/grn Alternator
A17 pink IAB Solenoid Valve
A18 - -
A19 wht Intake Control Solenoid Valve
A20 red/grn EVAP Purge Control Solenoid
A21 yel/grn1 ICM
A22 yel/grn2 Shorted to A21
A23 blk1 GND
A24 blk2 GND
A25 yel/blk PGM-FI Main Relay (power)
A26 blk/red VTEC Pressure Switch (GND)
B1 yel/blk PGM-FI Main Relay (power)
B2 brn/blk GND
B3 - -
B4 - -
B5 blu/blk To A/C Switch
B6 - -
B7 - -
B8 red/grn PSP Switch
B9 blu/red Starter Cut Relay
B10 orn2 VSS
B11 orn3 CYP
B12 wht CYP
B13 orn/blu TDC
B14 wht/blu TDC
B15 blu/grn CKP
B16 blu/yel CKP

D1 wht/yel Battery
D2 grn/wht1 Brake Switch
D3 red/blu KS
D4 brn/wht SCS
D5 - -
D6 lt blu or lt grn VTEC Pressure Switch
D7 lt grn/red Data Link Connector
D8 - -
D9 wht/red ALT
D10 grn/blk ELD
D11 red/blk TP Sensor
D12 wht/blk EGR Valve Lift Sensor
D13 yel/blu ECT Sensor
D14 wht HO2S Sense
D15 red/yel IAT Sensor
D16 - -
D17 wht/blu MAP Sensor
D18 - -
D19 red/wht EGR Valve Lift Sensor
D20 yel/wht TP Sensor
D21 blu/wht MAP Sensor
D22 grn/wht2 TP Sensor

 

i dont think those colors match up
I mated a civic dx harness with the h22 harness
Those colors dont sound right.

No one else has any advice?

 

i'm not 100% sure of its accuracy, i pulled it off another post on ht.

 

Its cool they could be right. Ill have to check my car tmrw when its light out.

 

searched for map colors and found this

https://honda-tech.com/zerothread?id=723828

white--&gt; D17 MAP Sensor Input About 3v
yellow/green--&gt; D19 Reference Voltage About 5v With key on, engine off
green/blue--&gt; D21 Sensor Ground Less Than 1v

 

ok... nice.. i notice the info i found for my last post doesn't match exactly to the first pinout i found...

i'll look at my map tomorrow and see what color wires are going to the plug

 

Thanks for the help!!!

 

What wiring harness are you using?

 

99 civic dx harness and h22 harness

 

the plug next to your oil filter might be a speed sensor. Your map sensor should be on the firewall behind the intake manifold