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Pin Voltage Tests

CAUTION: When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.
CAUTION: Before disconnecting battery, obtain anti-theft code for radio. After battery is reconnected, the word CODE will appear on radio display. Enter 5-digit anti-theft code using select buttons and radio will begin working. If code is entered wrong 10 times, leave radio on at least one hour and enter code correctly. Any time radio power is lost, pre-selected radio stations will have to be set. For more information, see owners manual.
NOTE: Unless stated otherwise in testing procedures, preform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance. Carefully backprobe PCM harness connector using Backprobe Set (07SAZ-001000A) to avoid connector damage. Voltage readings may vary slightly due to battery condition or charging rate.
NOTE: PCM may also be referred to as ECM. Generator may also be referred to as alternator.

Pin voltage charts are supplied to reduce diagnostic time. Checking pin voltage at the PCM connector determines whether PCM is receiving and transmitting proper voltage signals. Diagnostic charts may also help determine if PCM harness is shorted or open. See Fig 1-Fig 34 .

Fig 1: Identifying PCM 32-Pin Connector "A" Terminals & Pin Voltages (Accord 2.3L - 1 Of 5)
G99D08696Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 2: Identifying PCM 32-Pin Connector "A" Terminals & Pin Voltages (Accord 2.3L - 2 Of 5)
G99F08697Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 3: Identifying PCM 25-Pin Connector "B" Terminals & Pin Voltages (Accord 2.3L - 3 Of 5)
G99I08694Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 4: Identifying PCM 31-Pin Connector "C" Terminals & Pin Voltages (Accord 2.3L - 4 Of 5)
G00012221Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 5: Identifying PCM 16-Pin Connector "D" Terminals & Pin Voltages (Accord 2.3L - 5 Of 5)
G99B08695Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 6: Identifying PCM 32-Pin Connector "A" Terminals & Pin Voltages (Accord 3.0L - 1 Of 4)
G00012222Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 7: Identifying PCM 25-Pin Connector "B" Terminals & Pin Voltages (Accord 3.0L - 2 Of 4)
G00012223Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 8: Identifying PCM 31-Pin Connector "C" Terminals & Pin Voltages (Accord 3.0L - 3 Of 4)
G00012224Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 9: Identifying PCM 16-Pin Connector "D" Terminals & Pin Voltages (Accord 3.0L - 4 Of 4)
G00012225Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 10: Identifying PCM 32-Pin Connector "A" Terminals & Pin Voltages (Civic D16Y5 Engine With M/T - 1 Of 3)
G99E08687Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 11: Identifying PCM 31-Pin Connector "C" Terminals & Pin Voltages (Civic D16Y5 Engine With M/T - 2 Of 3)
G99G08688Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 12: Identifying PCM 16-Pin Connector "D" Terminals & Pin Voltages (Civic D16Y5 Engine With M/T - 3 Of 3)
G99I08689Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 13: Identifying PCM 32-Pin Connector "A" Terminals & Pin Voltages (Civic Except D16Y5 Engine With M/T - 1 Of 5)
G99F08701Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 14: Identifying PCM 25-Pin Connector "B" Terminals & Pin Voltages (Civic Except D16Y5 Engine With M/T - 2 Of 5)
G99H08702Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 15: Identifying PCM 31-Pin Connector "C" Terminals & Pin Voltages (Civic Except D16Y5 Engine With M/T - 3 Of 5)
G99J08703Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 16: Identifying PCM 16-Pin Connector "D" Terminals & Pin Voltages (Civic D16Y7 & D16Y8 Engine - 4 Of 5)
G99B08704Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 17: Identifying PCM 16-Pin Connector "D" Terminals & Pin Voltages (Civic D16Y5 Engine With CVT Transaxle - 5 Of 5)
G99E08705Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 18: Identifying PCM 32-Pin Connector "A" Terminals & Pin Voltages (CR-V - 1 Of 4)
G99G08706Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 19: Identifying PCM 25-Pin Connector "B" Terminals & Pin Voltages (CR-V - 2 Of 4)
G99I08707Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 20: Identifying PCM 31-Pin Connector "C" Terminals & Pin Voltages (CR-V - 3 Of 4)
G99A08708Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 21: Identifying PCM 16-Pin Connector "D" Terminals & Pin Voltages (CR-V - 4 Of 4)
G99C08709Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 22: Identifying PCM 32-Pin Connector "A" Terminals & Pin Voltages (Odyssey - 1 Of 6)
G99E08710Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 23: Identifying PCM 32-Pin Connector "A" Terminals & Pin Voltages (Odyssey - 2 Of 6)
G99G08711Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 24: Identifying PCM 25-Pin Connector "B" Terminals & Pin Voltages (Odyssey - 3 Of 6)
G99I08712Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 25: Identifying PCM 31-Pin Connector "C" Terminals & Pin Voltages (Odyssey - 4 Of 6)
G99A08713Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 26: Identifying PCM 16-Pin Connector "D" Terminals & Pin Voltages (Odyssey - 5 Of 6)
G99C08714Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 27: Identifying PCM 12-Pin Connector "E" Terminals & Pin Voltages (Odyssey - 6 Of 6)
G99A08690Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 28: Identifying PCM 32-Pin Connector "A" Terminals & Pin Voltages (Prelude - 1 Of 3)
G99C08691Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 29: Identifying PCM 31-Pin Connector "C" Terminals & Pin Voltages (Prelude - 2 Of 3)
G99E08692Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 30: Identifying PCM 16-Pin Connector "D" Terminals & Pin Voltages (Prelude - 3 Of 3)
G97E06080Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 31: Identifying PCM 32-Pin Connector "A" Terminals & Pin Voltages (S2000 - 1 Of 4)
G00012217Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 32: Identifying PCM 32-Pin Connector "A" Terminals & Pin Voltages (S2000 - 2 Of 4)
G00012218Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 33: Identifying PCM 25-Pin Connector "B" Terminals & Pin Voltages (S2000 - 3 Of 4)
G00012219Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 34: Identifying PCM 31-Pin Connector "C" Terminals & Pin Voltages (S2000 - 4 Of 4)
G00012220Courtesy of AMERICAN HONDA MOTOR CO., INC.
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