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Engine Controls - Pin Voltage Charts: Introduction

Pin voltage charts are supplied to reduce diagnostic time. Checking pin voltages at the Engine Control Module (ECM) determines whether it is receiving and transmitting proper voltage signals. Charts may also help determine if ECM harness is shorted or opened. See Fig 1 -Fig 10 .

NOTE: Unless stated otherwise in testing procedures, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance. Voltage readings may vary slightly due to battery condition or charging rate.

NOTE: For terminal identification on all models, see Fig 1 .

Fig 1: Identifying ECM Connector Terminals

G93C78206

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: ECM Chart For Connector Section "A" (Except VX 1.5L)

G94D44548

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 3: ECM Chart For Connector Section "B" (Except VX 1.5L)

G94E44549

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 4: ECM Chart For Connector Section "D" (Except VX 1.5L)

G94I44550

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 5: ECM Chart For Connector Section "A" (VX 1.5L)

G94J44551

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 6: ECM Chart For Connector Section "B" (VX 1.5L)

G94A44552

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 7: ECM Chart For Connector Section "D" (VX 1.5L)

G94B44553

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 8: ECM Chart For Connector Section "A" (Civic Del Sol)

G94C44554

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 9: ECM Chart For Connector Section "B" (Civic Del Sol)

G94D44555

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 10: ECM Chart For Connector Section "D" (Civic Del Sol)

G94E44556

Courtesy of AMERICAN HONDA MOTOR CO., INC.