Engine Controls - Pin Voltage Charts: Introduction

Pin voltage charts are supplied to reduce diagnostic time. Checking pin voltages at the Engine Module (ACM) determines whether it is receiving and transmitting proper voltage signals. Charts may also help determine if ACM harness is shorted or opened. See Fig 1-Fig 15 .

NOTE: Unless stated otherwise in testing procedures, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohms 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 ACM Connector Terminals

G93C78206

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: ACM Pin Voltage Chart For Connector Section "A" (Accord)

G93B78205

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 3: ECM Pin Voltage Chart For Connector Sections "B" & "D"(Accord)

G93D78207

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 4: ECM Pin Voltage Chart For Conn. Sect. "A" (Civic Exc. VX 1.5L)

G93E78208

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 5: ECM Pin Voltage Chart For Conn. Sect. "B" (Civic Exc. VX 1.5L)

G93F78209

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 6: ECM Pin Voltage Chart For Conn. Sect. "D" (Civic Exc. VX 1.5L)

G93I78210

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 7: ECM Pin Voltage Chart For Connector Sect. "A" (Civic VX 1.5L)

G93J78211

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 8: ECM Pin Voltage Chart For Connector Sect. "B" (Civic VX 1.5L)

G93A78212

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 9: ECM Pin Voltage Chart For Connector Section "D" (Civic VX1.5L)

G93B78213

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 10: ECM Pin Voltage Chart For Connector Sect. "A" (Civic Del Sol)

G93C78214

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 11: ECM Pin Voltage Chart For Connector Sect. "B" (Civic Del Sol)

G93D78215

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 12: ECM Pin Voltage Chart For Connector Sect. "D" (Civic Del Sol)

G93E78216

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 13: ECM Pin Voltage Chart For Connector Section "A" (Prelude)

G93F78217

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 14: ECM Pin Voltage Chart For Connector Section "B" (Prelude)

G93G78218

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 15: ECM Pin Voltage Chart For Connector Section "D" (Prelude)

G93H78219

Courtesy of AMERICAN HONDA MOTOR CO., INC.