Cruise Control Fitting

Author accepts no responsibility/ liability for damage/ accidents or losses following the use of this guidance during any cruise control modification always have a qualified Vauxhall specialist

technician modify your car

Before you use your Cruise Control system after fitting it from this guidance you have to have it PROPERLY TESTED by a fully approved Vauxhall Specialist.

Cruise Control

Installation Guide

Vauxhall Corsa C

Vehicle Engine Codes:

Z12XEP

Z14XEP

Approximate Years: 54 > 56 plates

[22/03/2014]

Steps Performed on the following model:

Vauxhall Corsa Z14XEP 1.4 Twinport 2006 Facelift 5 Door SXI+

EARLY APOLOGIES FOR ANY GRAMMATICAL ERRORS

READ THE DISCLAIMER SECTION ON PRINCIPLE TO UNDERSTAND

THE SERIOUS IMPLICATIONS THAT COULD RESULT FOLLOWING

FAILURE TO CORRECTLY MODIFY THE CAR




Recognition

Thanks for all the help figuring out how to make the MOD work -

credit goes to these people on Corsa C UK for their help.

It would not have been easy or essentially possible to produce this

guidance however, neither the author nor related contributors

accept any responsibility for the information contained within this

guide and therefore reject all prior legal responsibility to any

damage/ accident or loss following the guidance of this guide.

If you want a list of the contributors I can provide it to you at a later

date but they all know who they are!




DISCLAIMER YOU MUST READ THIS FIRST!

I (THE AUTHOR) DO NOT IN ANY WAY SHAPE OR

FORM ACCEPT LIABILITY FOR ANY DAMAGE/ INJURY

OR LOSS RESULTING FROM THIS GUIDE ON CRUISE

CONTROL INSTALLATION AND DO NOT CODONE ITS

USE AS STRICT RULE, IT IS MEANT AS A GUIDE ON

HOW CRUISE CONTROL COULD BE ADDED AND

HENCE FORTH REJECT ANY RESPONSIBILITY FOR YOUR

ACTIONS RESULTING FROM THIS GUIDANCE.

DURING THIS MODIFICATION THERE IS THE POSSIBILITY YOU

COULD IRREVERIABILY DAMAGE YOUR CARS ELECTRICAL AND

MECHNICAL SYSTEMS AND THEREFORE THE UPMOST CARE SHOULD

BE TAKEN DURING EACH STEP.

YOU MUST HAVE A REASONABLE AMOUNT OF EXPERIENCE OF ELECTRONICS AND

AUTOMATIVE TECHNICS IN ORDER TO CORRECTLY STEER THROUGH THE STEPS.

It is the car owner/ drivers responsibility to ensure the safety of their vehicle following

any modification to the electrical system. If you are concerned about any aspect of this

guide DO NOT attempt it and have a fully qualified automotive technician check the

safety of your vehicle by way of a safety check or MOT.

This guidance is not necessarily the best or proper way to handle the cars electrical system

and my methods/ techniques are therefore to be considered as bad practice in all shapes

and form for your own protection.

THIS MODIFICATION HAS THE POTENTIAL TO DO SERIOUS BODILY

HARM SHOULD THE SYSTEM MALFUNCTION AND HENCE FAILS TO

DISABLE. THEREFORE IT IS THE DRIVERS/ OWNERS RESPONSBILITY

TO TAKE THIS INTO CONSIDERATION BEFORE USE OR INSTALLATION

OF THE CRUISE CONTROL RETROFIT SYSTEM




INTRODUCTION:

No doubt you find yourself reading this guide today because you find

yourself with foot ache or because you are a long distance driver

wanted cruise control that was not natively fitted to your Corsa C.

The cruise control system was an optional extra on Vauxhall Corsas and came

as part of the Plus Pack which included 16 alloy wheels, remote ultrasonic

alarm system.

It was ONLY available on MANUAL models.

Corsa C Facelift Variants

< In order of features from poverty to sport >

Expression (cheapest, poverty model)

Life

Design

SXI

SXI+

SRI (most expensive, sports model)

I will seek to show you the steps that are required in installing Cruise

Control (CC) into your FACELIFT Corsa C; with images and

diagrammatic representations of the wiring system surrounding your

Motronic Canbus Engine Control Unit.

Dont bother rushing your Cruise Control Installation take

this guide and re-read every step and plan. It takes

perseverance to get the system to work!




A breakdown then of the steps you will be required to carry

out to get the system live:

1. ) Check your engine code is compatible with that of this manual

Z12XEP (1.2 Twinport)

Z14XEP (1.4 Twinport)

Should you have a different engine code I will provide some information at the back of this

book about slight differences in the steps you need to take to get the system working and

the troubles you may have.

2. ) Stalk/ Indicator Wiring at dashboard level Pin 4 of Indicator/ Cruise Stalk > Pin 2 of Body Control Module Plug

Facelift Corsas SHOULD have this cable in situ as standard on (SXI/ SXI+) models

but I have not investigated any other models/ variants.

3. ) Cruise Control Switch Assembly and Wiring Clutch Switch Pin (there are only two) to Pin 8 of Engine Control Unit Delphi Plug

4. ) Engine Control Unit Wiring Entering the Delphi Plug/ inserting a wire and clip safely

5. ) OPCOM programming steps Using your OPCOM programme to activate Cruise Control in the Engine Management

and Body Control System




Catch 22:

Find these things out first!

Pin 4 Stalk to Pin 2 BCM brown and grey wire?

Remove your trim panels in the drivers foot well and the Steering Cowling to

determine if you have this wire. If you do like I did then your job is 50% done.

Pin 8 Delphi Connector ECU (X53) Pin 4 Clutch Switch

It is unlikely that you have this wire in situ. Using the Dephi Plug

disassembly guide check to see if you have a GREY wire coming

from Pin 8 I did! Although I never used it. If you dont it is not the

end of the world.

If you do:

Check the next set of places:

Plug X21 (drivers footwell)

Pin 10 as seen in the red

circle.




X1 Pin 34

It is my opinion that if the grey cable does not meet you in the interior loom at

plug X21 Pin 10, it will be at the X1 socket at pin 34 (red ring). Should this be

the case I would disregard its presence and fit a new cable as the hassle of

getting at it in the body control module is more work that its worth.

HOWEVER, if you are trying to wire a stalk wire Pin 4 to BCM Pin 2 on the X45

BCM plug (green ring) you may have more of a chance and it MAY be

worthwhile.




Step 1: What you will need (Shopping List)

Tools:

Torx Screwdriver/ Drive Socket Set/ Allen Keys

Wire Strippers

Wire Side cutters

Soldering Iron/ Solder/ Flux

Heatshrink

Wire approximately Gauge 16 automotive high temp wire

preferable

Insulation Tape

Zip Ties/ Cable Tidy

Precision Screwdrivers

Standard size Flat Head/ Philips Screwdrivers

Long Nose Pliers

Gloves (minimize injury, and dirt)

Hardware:

Cruise Control Stalk (44.60 from Vauxhall)

Clutch Switch (9.80 from Vauxhall)

OPCOM (18 - 30 from Ebay)

A portable computer from OPCOM

Small radio control modelling connector or computer fan connector

(commonly used in PC LED applications/ or Remote Control Cars/ PC

fans) for connecting to Clutch Switch

Delphi Wiring Harness Pin (from a Scrap Car: preferable car is a

05,55,06,56) plate Astra H as it has a long wire and pin to assist (you

can pick out one from a Corsa C facelift but it will more difficuilt to find

and harder to wire).




STEP 2: Indicator/ Cruise Control Stalk

You MUST identify whether or not you have the correct number of

wires installed in your indicator stalk.

1) Remove the steering column cover and expose the indicator stalk and its plug.

2) There should be 1 T20 Torx screw underneath the steering cover, and then two clips

behind the steering wheel.

3) Once the covers are off remove the indicator stalk by squeezing the lugs together

to release the entire component. You then must remove the plug from the back by

pushing the blue slider back and releasing a clip.

4) Now you need to check the presence of your wires:

a. There should be FOUR (4) wires present at the plug and the cruise control

wire is the BROWN/GREEN wire.

b. If your wire is NOT present you need to: Install a small 0.2mm wire from Pin 4

of this connector to Pin 2 of the Body Control Module Plug which is located in

the engine bay on the nearside just in front of the car battery (under a cover

which is waterproofed and sealed with Torx screws)

5) I HAVE NOT PROVIDED PHYSICAL IMAGES OF THE WIRING PROCESS AS MY MODEL

VARIANT HAD THIS WIRE IN SITU HOWEVER ILL PROVIDE SOME DIAGMATIC VIEWS

OF WHAT NEEDS TO BE DONE.




Possible steps to take if you need to install this cable:

1) Scavenge a donor stalk cable from a Corsa C with the plug to obtain the pin required to

fit into the plug and a donor cable and pin from the BCM unit of the same car.

2) Run a small wire from this stalk down the steering system (without affecting the

motion of the wheel) behind the dashboard to the BCM - this is located behind the

glove compartment.

3) Disassemble the BCM by removing the control units unpinning the BCM board and

repining the plug with the scavenged wire.

4) Solder the two wires together and heat shrink.

Stalk Pin 4 goes to X45 plug Pin Number 2 a visual representation of the plug is seen

above. There is an approximate location in the CATCH 22 section of this document.




STEP 3: Cruise Control Switch Wiring

The cruise control switch is similar to that of a brake stop switch located just to the right of

the clutch pedal.

There has been people that have recycled a brake stop switch from Corsa C into the clutch

switch and essentially that will work however in the interest of a neat job I have purchased

a proper PTB Clutch Position Switch and Connector.

The clutch PTB switch works one of two ways depending on how it is wired and there is no

information as to whether it remains live throughout ignition operation.

When the pedal is at its highest position the switch will be pushed in on the CLOSED loop

there is 12 volts to Pin 8 of the ECU. When you depress the clutch the circuit is broken and

there should be no power to Pin 8. The ECU then knows that the pedal has been depressed

and it should no longer continue CC throttle body regulation.

You can check the voltage and wiring using a multimeter to determine if any current is

being transmitted through the cables or without having the system live, resistance test the

wiring (continuity test) to determine if the wire is good.

It is located under the dashboard behind a series of covers and for the purpose of this I will

not go into how to remove those but a handy Haynes Manual or a Corsa C UK tutorial will

show you how this is done.

The clutch switch is located inside that square metal piece of the clutch pedal assembly and

sits upside down with the wires pointing up so the button makes contact with the pedal.




If you happen to have a 1.7 Diesel Turbo Injected Engine from the Corsa C before 54 plate in

the preface lift style you SHOULD have the wiring in place for the switch.

If not you will need these two components:

The physical switch and then a connector in order for reliable operation.

This is the switch and connector that I will be using in this tutorial.

1) With your clutch connector the GREY wire is the wire that proceeds to pin 8 of the

ECU and therefore is the signal. You will need to SOLDER (the only reliable way of

wiring) onto the end of your lead leaving a long stretch of wire to pass through the

wall of the cockpit and down to the ECU.

a. The new grey wire that you have extended will then pass behind the

dashboard through the stereo and into the back of the glove compartment.

2) The BLACK connector is the ignition live, originally it was fed from Fuse 40 (a 10Amp

rated fuse) however this is not possible to do effectively so you have two choices:

a. Patch an ignition live from the brake stop switch on the middle peddle to

the black wire (this is the recommended route).

b. Place a wire from the cigarette lighter socket (wire behind), to an inline fuse

holder with a rated fuse of 10 Amps, and then use this as your ignition live

feed.




You can see demonstrated the brake switch:

To remove this there are two lugs one located underneath and the other on top it

can be very difficult to remove this switch but dont just pull take your time and

remember to try and release those lugs without snapping them off.

1) There is two black and yellow wires and these are NOT to be touched.

2) Then there is a small black wire that looks across pins 1 and 3 which is to carry a

12v ignition current over two pins. Then there is a single black wire proceeding up to

the main loom.

3) You will need to cut this wire, strip it off and then attach another small wire and

solder everything up together.

4) Before you solder, place a decent length of heat shrink on the unconnected wire so it

can cover the soldered connection. But make sure it is cool first otherwise the heat

shrink will not fit over and shrink itself before you have it correctly placed.

5) It is ridiculously difficult and soldering in a confined space its hard but eventually you

will get it to connect as I did.

6) I did all this, and then placed some duct tape over the whole lot just to protect the

join from heat sources. You dont have to but I was paranoid).

*WARNING: YOU AND VAUXHALL MUST CHECK & TRIPLE

CHECK THE OPERATION OF YOUR BRAKE LIGHTS

FOLLOWING THIS STEP! YOU ABSOLUTELY MUST NOT

DRIVE ON ANY ROAD WITHOUT THEM WORKING*




You can see from the diagram to

the left the location of the clutch

switch and the wiring I have

coming off of it.

You can see vaguely the blue zip

tie I have running around the

switch holding the wires in place

so that the connector does not

come off.

Here is a picture of the types of

connector that can be used for

the clutch switch you can find

this type of connector from a

typical computer fan, or even

something like a remote control

car, or a computer reset/ light

wire this isnt the precise one

but I am confident that it will fit

the switch pins!

(The red and white wire/

connector I used was from an old

PC reset switch) Perfect fit!




Fitting the Clutch Switch to the

Pedal:

I struggled to fit the clutch switch as it is a VERY tight fit:

My advice is as follows:

Find a spare but of cable and tie the clutch pedal down to

the steering column so that you have more room to

manoeuvre the switch.

Do not bother pressing the lugs on the switch as youll only

damage the plastic on them and then the switch wont

stay in.

1) There is a red sheath located on the clutch switch

you will need to push this down slightly in order to remove

the green security pin (protects the switch on transport) 2) Pull the red sheath back up to the top as this in

affect allows the lugs that hold the switch in position to

move in slightly as you push the switch in 3) Once the switch is push in push the red sheath all

the way back so it locks the switch in position 4) Untie your clutch pedal and gently lift it in the first instance to come into contact

with the switch as it locks the switch on the first contact.




STEP 4: Engine Control Unit Wiring

There are a number of things to consider with this step:

1) Are you competent and comfortable with messing with the cars can bus electrical

wiring as without proper knowledge you could seriously damage the internal

workings of the system and cause faults?

2) Are you prepared for it to go wrong? To be safe consider what you will do if you

damage the plug or wires the bill for a new loom is approximately 250 from a

registered Vauxhall Dealership so be prepared in case it all goes wrong!

So at this stage you should have your cruise control stalk installed, and a clutch switch

located with a single wire passing into the engine bay to be installed.

Firstly you are wanted to install your cruise control wire onto the cars electrical loom on a

DELPHI grey handle push fit plug (usually the lower of the two connectors). This has only

one single wire passing out one side as opposed to the other bosch wire that has two and

connects up all the engine sensors such as the Mass Air Flow, O2 Lambda, Crankshaft and

Oil Pressure.

This is a picture of the DELPHI plug from an actual Corsa C.

You can recognize this plug by its white central connector its grey handle and slider than

pass out of the plug on removal this grey mechanism can be a bit stuff and using a

screwdriver on the slider can help to unlock it from the control unit.




This is a demonstration of the wires already fitted in this plug. They are not glued in on this

model, and all that is required is a 0.35mm grey wire (or equivalent) to be installed along

the top line (demonstrated in the image) on the 8th pin in from the grey slider side. You can

see the line and reference point from the brown/ red wire located in pin 13 (see arrow).

To get the correct wire and pin:

Take a trip to your nearest scrap yard or phone them before hand to identify two things:

1) Do they have a Corsa C in stock beyond 54 plate (petrol 1.0/1.2/1.4).

2) Is there a loom still in situ for the ECU plug?

Once you have located a suitable donor remove the Delphi plug cutting as far from the

plug as you can to give yourself lots of wire to play with.

DO NOT ATTEMPT TO WIRE CRUISE CONTROL TO THE TOP PLUG PICTURED BELOW

This is the plug for the engine harness and wires up sensors it plays no part in CC but I

have it pictured here for your demonstration. This has two wires out of either side and its

the first plug you see that you have to slide a plastic cover across to disconnect.




Delphi Plug Diassembly and Pin Wiring Process:

THIS IS THE SAME PLUG AS THE CORSA C (ITS FROM AN ASTRA H) BUT DISREGARD THE

DIFFERENCE IN COLOUR.

^ THE DELPHI PLUG AS IT WILL BE IN SITU ^

1: Take the plug out of the ECU socket it can be stif. (As you pull back on the grey plastic

handle, use a screwdriver to prise the slider out as well as you will break the handle doing

it alone.

2: Make a decent amount of space to work on the plug around the engine




3: You need to remove the top cover of the plug make sure the handle is pulled all the

ways back otherwise the cover wont come off. Then release the two lugs on each side by

carefully prising with a precision screwdriver.

4: Slide the cover back towards the grey handle to remove from the final lug.




Notice that the back of the plug with the cover open has small numbers identifying the pins on the

end of each row this is useful for finding Pin 8 (PIN 8 is arrowed).

5: To insert a pin you need to remove the pin locking plastic it is a small red/brown

coloured device and you just prise it out with a precision screwdriver.

6: Find Pin 8 on the plug notice there are small numberings on the side to help you

locate the correct hole.




Note the small pin has a (tooth edge at the top) this locks it into place which is why when you feel

resistance you may have the pin the wrong way round.

7: Take your pin and wire, and slide it (the correct way up) into the plug usually they

slide in with ease but if not a SMALL spray on the pin of WD40 will assist. If it wont go in

it maybe the wrong way round. Make sure you have soldered your new piece of wire that

has enough length to travel to the drivers foot well before inserting the pin for your ease.

8: Reassemble remembering to carefully lock all the pins off using the red plastic retainer.

10: Place the plug back on the ecu pulling the handle back and gently tapping with a

screwdriver on the slider until it locks into position.




Once you have got into the plug gently pull a suitable wire with the pin intact and

then SOLDER, the main CC clutch switch wire you have passed into the engine bay

onto it.

You may have a hole in the top casing of the plug on removal (see first image on

removal guide) so if this is the case like mine, run a couple of strips of duct tape

over it to keep it watertight. Ensure that the plug is assembled correctly!

Finally with your wire in place; carefully INSULATE with special insulation tape or

fabric tape along your cruise control wire so it does not short or get melted from any

hot components as it will be more vulnerable to the elements than if it was installed

from factory.




STEP 5: OPCOM Programming

Youll need your cars security code in order to access the programming

aspect of the body control module so have this ready!

These guides should be pretty much the same for any Canbus compatible Vauxhall model from 2002

onwards.

2 SIMPLE PROGRAMMING STEPS From the main menu select diagnostics

At vehicle identification menu select year, and on the next page select model.

At the next page select Engine, and at next page engine code.

Press programming button.

Program variant configuration.

Change the 'not present' cruise control to 'present' then press 'Perform coding

go back and close down 'Engine' options and engine code windows.

In system description select 'body'

select 'BCM'

select 'programming'

select program variant configuration

enter 4 digit security code

keep pressing next until you come to the option 'cruise control' and change 'not' present to present.

press 'program' and select yes.

press 'back' then 'back' then 'close'

Should this process not work: OPCOM is not the most definitive answer in programming (as I found out mine did not

work initially)

The only alternative is Vauxhall turning it on via TECH2. It is costly and they will charge

you a minimum of 30 minutes labour approximately 35 55.




OPCOM TROUBLESHOOTING

Of all the steps involved, I found that getting it programmed was the hardest!

Message: Could not load file CCORSAZ14XEP.var

I had trouble programming CC with my OPCOM there were only two things that worked

for me. Run OPCOM 100219a in Windows XP (not Win 7 with compatibility but a computer

with the REAL windows XP) with Firmware 1.44 for the engine step on the Z14XEP it would

not let me programme variant config I had to select Z12XEP despite that fact it wasnt my

engine this can be REALLY dangerous so dont do it although it worked for me.

Cannot Access the Body Control Module

For my Z14XEP the best way to get into the BCM was again using Windows XP (I tried

Windows 7 and 8 with no success), using OPCOM firmware 1.39 and using the China Clone

2010)

Hints and Tips:

Always check/ test your interface in Settings first to check it is working correctly

Configure the software to your correct hardware revision

Do not swap firmware from your original factory firmware unless you have to it can

damage the interface and this may have been my problem

Dont run the engine whilst programming just have the ignition on (only for a max

of 5 minutes)




Wiring Diagrams and Relevant Materials:

Location of required ECU Plug X53

Diagram of the Brake Switch Connector




Diagrammatic representation of the X53 ECU plug and its layout




Clutch Switch and Stop Switch Wiring Diagram from Top at Fuse 40 to wire leading to Pin 8

of the X53 ECU Delphi Connector.




INFORMATION FOR XE Engines

(Prefacelift

From what I can determine there is a good chance you can install Cruise Control on:

Z14XE Multec S (F) ECU connect to Pin 8

Z18XE Simtec 71 ECU connect to Pin 10

Z10XEP Motronic 7.6.1 connect to Pin 8

From my knowledge the 1.8 engine is used across the Astra range and they come with an

engine management system capable of cruise control and some SRI 1.8 models have the

cruise control system fitted but that would need to be confirmed by someone who owns a

Corsa C 1.8 with Cruise.

There has been some success threads about installing in a Z14XE so for now I will say it is

possible however; that is again subject to the ECU having the correct software.




Thanks for taking the time to read the guide

remember you must be careful with engine

wiring, brake lights and your personal safety!

Be safe on the roads!

DO NOT use your vehicle if you suspect

damage has occurred resulting from a cruise

control modification. Take it to your local

approved Vauxhall Dealership for

Diagnostics.

If you found this useful, the guidance worked

for you or your need assistance with

something see the thread

http://www.corsa-c.co.uk/forum/showthread.php?402151-Cruise-

Control-Install

Cruise Control Fitting

Documents

Transcript of Cruise Control Fitting