STEP 8:
time to do some electrical work.
- remove the ECU. 4x 10mm nuts under the carpet in the passangers floor well
NOTE:
- In this DIY I will refer alot to a connector in the engine bay that we will remove from the EF9 B16A loom and add to the D16A8 loom, this connector will always be refered to as "Engine Bay B connector " and will always be blue in colour. the connector that looks the same on the RHS will be called engine bay A connector in RED
- also when ever I refere to a pin in a connector, you look at the connector from the wire side ( back of it ) and the top left is pin 1.
- ECU connectors will be refered as ECU A, ECU B, ECU C connectors in black text.
- the original loom of the AUDM CRX will be called D16A8 loom
- the B16A EF9 wiring loom will be called B16A loom
so here we go
- place your cabin wiring loom on a bench
- locate the LH Side engine bay PGMFI connector. its the round yellow 14 pin connector that if found on the LH side shock tower next to the injector resistor.
- we need to remove this connector from the harness. So now we are going to split it from the loom. start by getting a stanly knife and carefully cut away the tape around the conduit on the loom from the connector back to the rubber grommit. see pic bellow.
- remove the conduit
- now work on the junction of all the wires. remove the tape and conduit all the way back to the ECU connectors.
- now some care should be taken and follow these instructions carefully. you need to understand how to look at the connector and understand what wire I am refering to.
- when ever I refere to a pin in a connector, you look at the connector from the wire side ( back of it ) and the top left is pin 1 then along the top row towards the right pin 2 then pin 3. Down to the next row under the top row. again from left to right pin 4 to pin 7 and so on. ( see pib bellow )
- start at the B connector and trace the following wires back to the ECU A connector one at a time and remove them from the connector.
to unplug the a wire from the ECU A connector you need to push down on the plastic lock tab in the connector and pull the wire out at the same time. ( see pic bellow )
- now remove some pins from the other type of ECU connectors. ECU B and ECU C connectors
this is a bit more tricky, but what you have to do is remove the locking plate by unclipping it and poping it out.
- now place a small strong long type of pin ( I used a small drill bit after I snapped my screw driver ) in the end of the connector in the middle hole and press upwards into the pin you want to remove then gently pull on the wire of the pin to remove it from the connector.
remove the following
now there is 6 wires still holding the connector to the loom. we have to cut these.
( cut near as possible to ECU connectors )
B12 (yel ) power for VSS
B13 (yel/red) VSS signal
B6 (yel/blk) to PGMFI relay
B7 (yel/blk) to PGMFI relay
B14 (blk) ground
Blk Power steering ground ( goes to ground )
- now you can pull all the wires one at a time from the b connector side off the rubber gromit and pass the wires through it
you should end up with this
red arrow = power steering high pressure connector
blue arrow = engine bay B connector
black arrows = wires we free'd from the B16A cabin loom
- make the loom one peice and add conduit and tape it up as in pic bellow.
- now in the engine bay. Jam a screw driver into the rubber seal above the loom ( red arrow in pic bellow ) this will make a hole in the rubber.
- now feed the new harness with the B connector on it into that hole. I used a coat hanger as a draw.
- plug in the power steering high pressure connector.
you should have somthing like this in the car
- in the pic above the blue arrow is the loom we just poked through.
- remove the sheeth of the 3 ecu connector looms ( yellow arrows above pic )
so we end up with this
thats it for now for wiring. more to be done later
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