Re: Re[2]: check engine light

[Igor Kessel <e6941tb@ix.netcom.com>]

TRACY.M.FINNEGAN@monsanto.com wrote:
> 
>      igor,
>      thanks for your response.  i read the code as you described, here's
>      what i got:
> 
>      not exactly sure which is the start of the sequence.
> 
>      "flash" long, "2 flashes" short pause "1 flash" short pause "4
>      flashes" short pause "2 flashes", "flash" long , sequence repeats.
> 
>      so it looks like 2-1-4-2 but i don't know what the longer single flash
>      means, could be the start of end of sequence bit?
> 
>      anyway, does this code make any sense to you?

Yes, that's 2142 -- *Knock Sensor I*.

My Bentley sez:

1.
CAUSE OF FAULT: (G61) loose
EFFECT: Increased fuel consumption
CORRECTIVE MEASURE: Tightening torque 10Nm (7ft.lb)

2.
CAUSE OF FAULT: Disconnect or short between (G61) and (J88) Ignition Control 
Unit 
EFFECT: Power defficiency
CORRECTIVE MEASURE: Determine disconnect or short per wiring diagramm and 
eliminate

3.
CAUSE OF FAULT: (G61) defective
EFFECT:  --
CORRECTIVE MEASURE: Replace (G61)

4.
CAUSE OF FAULT: (J88) defective
EFFECT: --
CORRECTIVE MEASURE: Replace (J88)

a)I would check the wiring/connectors first coz they are the first logical 
step.
b) I would then connect a multimeter (a sensitive range of it's voltmeter, 
that is) across the Knock Sensor and smack the block with a hammer to see if 
the Sensor gives out any output (it's built around a piezoelectric crystall).

If a) and b) fail -- proceed to diagnosting the more expensive component (J88)


Tracy, if I may offer an advice:
I would not approach the CIS and/or wiring of a 200 without a 3-volume Bentley 
and a good multimeter in hand.

Good luck.

-- 
Igor Kessel
'89 200TQ - 18psi (TAP)
'98 A4TQ - on order...again. For the third time and counting.
Philadelphia, PA
USA