SpooningSkunks

Im onto the wiring side of an h2b into ek. I'm setting it up completely obd2, then swap to obd1 after inspection.Ii'm using p5m with the nifty immobilizer removed. my question is i don't have an immobilizer on my ek (or at least not on the ecu pinout) so what do i hook up to c22 on the p5m. Does it go to the key light?

hussain-vtec

Here you go this is it.
I It and find it you can do the same.

http://www.ff-squad.com/technet/ckftrick.htm


https://honda-tech.com/forums/tech-misc-15/possible-bypass-crank-position-sensor-w-crank-fluctuation-sensor-1029958/

SpooningSkunks

those both deal with the crank sensor. I know about that trick, but i'm using h22a4 oil pump with the crank sensor.. no problem. but there is no wire going to c22 for the p5m pinout which is the "immobilizer" (that's all it says for the wire description). Where does the wire go from c22 on the ecu. Does it trigger the green key light on the dash (which i don't have). Its gotta go somewhere otherwise it would be listed "Not Used"

SpooningSkunks

h22's don't have external ckf. Theres not an input on the ecu for ckf.

hussain-vtec

A.
OBDII H22a 96+

Layout
A1->A11----Blank--C1->C10---D1->D5
A12->A24--Blank--C11->C22--D6->D12
A25->A32--Blank--C23->C31--D13->D16

Pin---Color ---------Desc.
A1----yel------------Injector #4
A2----blu------------Injector #3
A3----red------------Injector #2
A4----brn------------Injector #1
A5----orn/blu-------Secondary O2 heater
A6----blk/wht-------HO2S heater
A7----orn------------EGR Control Solenoid Valve
A8----grn/yel-------VTEC Solenoid Valve
A9----brn/blk-------GND (dig)
A10---blk------------GND (power)
A11---yel/blk-------PGM-FI Power
A12---blk/blu-------Idle Air Control Valve
A13
A14
A15---red/yel-------Evap Purge Control Solenoid Valve
A16---grn/orn-------Fuel Pump Relay
A17---pnk/blu-------A/C Clutch Relay
A18---gry/red-------MIL
A19---wht/grn-------ALT
A20---yel/grn--------ICM
A21
A22---brn/blk--------GND (dig)
A23---blk------------GND (power)
A24---yel/blk--------PGM-FI Power
A25---wht-----------Intake Control Solenoid Valve
A26---red/blu-------IAB Control Solenoid Valve
A27---grn-----------Radiator Fan Relay
A28---grn/wht------EVAP Bypass Solenoid Valve
A29---orn/grn------Evap control cansiter vent shut valve
A30
A31-
A32-

C1---lt grn/blk------Ref. Voltage for ATTS or TCM (not used)
C2---blu------------CKP Detect
C3---grn------------TDCP Detect
C4---yel------------CKP Detect
C5---blu/orn-------A/C Switch Signal Input
C6---blu/red-------Starter Switch Input
C7---red/wht-------SCS
C8---lt grn ---------K Line (scan tool)
C9-- -
C10---wht/yel------ECM Backup Power
C11-- -
C12---wht----------CKP GND
C13---red----------TDC M Side
C14---blk----------CYP M Side
C15---blu/blk------VTEC Pressure Switch
C16---grn----------P/S Pressure Switch
C17---wht/grn-----ALT Detect signal
C18---blu/wht------VSS Signal
C19 -
C20 - -
C21 - -
C22---brn/yel------IMO Immobilizer Code Signal
C23- -
C24 - -
C25 - -
C26 - -
C27 - -
C28 - -
C29 - -
C30 - -
C31 - -

D1----red/blk----------TPS Detect
D2----red/wht---------ECT Engine Coolant Temp. Detect
D3----red/grn---------MAP Detect
D4----yel/red----------Vcc1 (Power for MAP)
D5----wht/blk----------BKSW Brake Switch Detect
D6----red/blu----------KS (Knock Sensor Detect)
D7----wht--------------HO2S Detect
D8----red/yel----------IAT Intake Air Temp Detect
D9----wht/blk----------EGR Valve Lift Sensor
D10---yel/blu----------Vcc2 (Provides Sensor Voltage)
D11---grn/blk----------SG2 (Sensor Ground)
D12---grn/wht---------SG1 (Sensor Ground)
D13- -
D14---wht/red---------SHO2S (Secondary O2 Sensor Detect)
D15---wht/blu---------PTANK (Detects fuel tank pressure signal)
D16---grn/red---------EL (Detects ELD Signal)

Note: some of the pins listed for OBDII don't apply to te 96 and were only added in 97 but the layout is the same.
__________________

Link
https://honda-tech.com/forums/honda-prelude-4/prelude-h22a-ecu-pinouts-918703/

SpooningSkunks

ya I have a print out. I'm making a new wiring harness and id like to know where c22 goes. it goes from the ecu to... it says the wire is hot with "digital signals" does it go to a immobilizer unit?

SpooningSkunks

Do i need a wire there if the immobilizer is bypassed? This is the only that is holding me up.

hussain-vtec

Here is other OBD-2 diagram But C22 is not There.

Talk with catman i think he no your Answer.
https://honda-tech.com/forums/members/katman-26/

SpooningSkunks

Thanks.