Special jumper for timing on 3SFE engine?

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Old 25 Nov 2006, 08:55 am   #1 (permalink)
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Default Special jumper for timing on 3SFE engine?

Re: 88 camry wagon 4-cyl. 3SFE engine:
The manual does not say to install a jumper wire to two contacts on
the diagnostic connector, it says to use a certain "special tool".
Can't tell from the illustration just what it is, but it does look
like some component with two leads. So I am thinking that maybe it is
actually a resistor that has to be connected to check timing, not a
jumper wire. I thought I had better check on this before doing
something possibly stupid like installing a plain jumper wire and
frying the ECU. If it is a resistor.... if I could find out the value
required, then I could make my own resistive jumper. thanks
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Old 25 Nov 2006, 11:26 am   #2 (permalink)
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Default Re: Special jumper for timing on 3SFE engine?

The manual says to connect the terminals with the special tool.
Most everyone just bends a paper clip to fit.
Looks to me like the special tool is just two insulated wire leads
connected at the top.
I am not aware of any requirement for resistance.
If you add resistance then _that_ could damage the circuit.
I've never had a problem using the paper clip.
I assume no one else does this, but on mine the little sections are
filled with grease, so after removing the "jumper" I fill them back up
with dielectric silicone grease.

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