Honda Prelude 1993 Service Manual page 344

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Table of Contents

ldle Control System

Troubleshooting Flowchart -

This signals the ECM when the automatic transmission is in @ or@] position.

Automatic Transaxle (A/Tl Geat Position-

Signal (A/T only)

Tum the ignition switch ON.

Observe the A/T gear position in-

dicator and select gach Position

S6e A/T goar position indicatoi in-

specdon (soction 141.

Ooes rhs indicator light ProP€rlY?

Turn the ignition gwitch OFF.

Connect the test harness between

the ECM and connectors.

"B" connector trom

the main wire hamess only, not

the ECM (see page 11-451

Turn the ignition swilch ON.

Measure voltage between 87

{+} terminal and A26 (-} ter-

Subltituto a known-good ECM

and rech.ck. ll prsc.ibod voltago

b now avriloblo, taplaco the origi-

ls there approx. 5 V?

Turn the ignition 3wilch OFF.

Reconnect "8" connector to the

main wire harness.

(To page 1 1-1031

Troubleshooting