Honda Prelude 1993 Service Manual page 331

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Check tor continuity on RED/BLU

wire between D3 terminaland 2p

connector of engine whe harness.

Ropair opon in RED/BLU wiro bo-

twoon ECM lD3) and tho KS.

Warm up tho engine to normal

operating temperature {the radia,

tor fan comgs on).

Hold engine at 3,OOO- 4,OOO rpm

lor 1O sgconds with manualtrans-

mission in noutral (A,rf: @ or @

ls the MIL on and does it

indicate code 23?

Subslituto a known-good ECM

and rsch6ck. lt symptom/indic!-

tion goos aw6y, .oplaco the origi-

32 N.m 13.2 ks-m.23 lb-ftl

Troubleshooting