005235

On 2/11/09 6:05 PM, "mdrillock" <mdrillock@cox.net> wrote:

> There are small or big mistakes in all of the sources of testing
> procedures and wiring diagrams. The Pro Training manual is wrong in that
> it treats all 2.1 years the same when they are not the same.
>
> Wherever that test for ECU pin 12 to FP relay pin 87 came from, it is
> wrong to say Zero ohms expected. The actual expected reading depends on
> the version of the 2.1 FI harness you have. If you look at the 1990
> Bentley diagram you will see an important change to this area in that
> the injector power comes from the FP relay instead of the ECU relay.
> This change actually may have occurred earlier than 1990 and my old 1988
> had the 1990 setup. It sounds like yours has the 87 type setup. What are
> the last 6 digits of your vin?
>
> Mark
>
>
> Jerry wrote:
>> Thanks for responses concerning my "bucking and hesitation"
>> problem.  I worked on my Vanagon today with fresh ideas after
>> reading all suggestions provided.  Here is what I came up with:
>>
>> The "Green" 02 sensor wire is shielded as you all have indicated.
>> My 02 sensor wire is clean, does not interfere with the shielded
>> section of the wire.  I tested the wire per the Bentley and those
>> continuity tests passed.
>>
>> I also did all of the pin to pin tests as stated in the Bentley.
>> All continuity and voltage tests passed within specification listed
>> in the Bentley.  I do have a question concerning the continuity
>> test for:
>> Terminal #12 at the ECU end of the harness and terminal #87 at the
>> fuel pump relay.  I performed this continuity test and the result was
>> infinite resistance(open circuit).  I am confused about this circuit.  The
>> continuity test I performed is listed in the Digifant Pro Training Manual.
>> It is not listed in the Bentley.
>>
>> http://www.obsolyte.com/vanagon/VanagonProTraining/DigiFant/040.jpg
>>
>> According to the Pro Training Manual this tests the fuel injectors
>> and wiring.  This check is for total resistance which should be 3-5 ohms.
>>
>> As I stated, my test indicated an open circuit between terminal #12
>> and terminal #87 of the fuel pump relay.  Is the Pro Training Manual
>> correct??
>> Could the Pro Training Manual be wrong??
>>
>> I tested for continuity between terminal #12 and terminal #86 of the fuel
>> pump relay, the result was 4 ohms.
>>
>> According to the Bentley wiring diagram page 97.106, the white wire from
>> terminal #87 at the fuel pump relay goes directly to the fuel pump. I
>> checked continuity from terminal #87 to the fuel pump connector.  This
>> reveled 000 ohms which according to the Bentley is correct.
>>
>> I did not see a test in the Bentley for checking continuity between
>> terminal #12 and terminal #87 at the fuel pump relay.  I did check the
>> continuity of the injectors per the Bentley with the following results:
>> #1 INJ  16 ohms
>> #2      14 ohms
>> #3      14 ohms
>> #4      14 ohms
>>
>> I also made sure my grounds were good.
>>
>> Thanks for your help!!
>>
>>
>>
>>
>>
>