Honda Prelude 1993 Service Manual page 385

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Disconnect the 2P connector from

the IAB controi sol€noid valve.

Turn the ignilion swatch OFF.

Check for continuity to ground on

rhe PNK wire.

IAB control syrtom i! OK.

Ropair short to giound

rt PNK wir6 b6twoen

ECM {A17) and tho 2P

Substituts a known-good ECM

and rachock. lt symptom goos

away, rcplaco the original ECM.

Reconnect the 2P connector to

the IAB control solenoid valve.

Connect the tost harness to the

main wire harness only {see page

1 1 - 4 5 ) .

Turn the ignition switch ON and

connect a jumper wiro between

A17 terminal and A26 torminal.

Rop.ir opon in P K wlro

botwoon ECM {A17)

ond tho 2P conn€ctor. lf

tho wiie i. OK, ,oDlac6.

th6 IAB cootol 8olongid

Does the solenoid valve click

Substhuto a known-good ECM

and .echack. lf proacriH

i3 now sveilablo roplace tho origi-

(From page 1 1-1441

{ F f o m p a g e 1 1 - 1 4 4 )

Troubleshooting