What connector does this page cover?

The back view and pinout of PCM Connector C3, a 28-pin connector with an orange terminal secondary lock, for a 2.0L VIN C powertrain.

Which pins control the shift solenoids?

C3-1 (GRN/RED wire) is Shift Solenoid #2 Control and C3-2 (GRN wire) is Shift Solenoid #1 Control.

Which pins carry the A/T output shaft speed sensor signals?

C3-22 (ORN) is the signal low, C3-23 (WHT) is the signal high, and C3-20 (BLK) is the shielded ground.

Which pins on connector C3 are not used?

C3-3 through C3-7, C3-9, C3-12 through C3-14, C3-19, and C3-24 through C3-25 are listed as Not Used.

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2.0L Engine Controls PCM Connector C3 Pinout - 28-Pin Wiring Diagram & Wire Colors

2.0L engine PCM connector C3 back-view pinout with pin, wire color, and function table

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Wiring chart showing the 2.0L PCM connector C3 back view with a pin-by-pin wire-color and function table.

AI caption February 2005 · Photo 2035 of 3537

This scanned service-manual page (page 6-1074, 'Engine Controls - 2.0L') shows the back view and complete pinout of PCM Connector C3 for a 2.0L VIN C powertrain. The header notes it is a 28-pin connector (C3) with an orange terminal secondary lock. A diagram at the top shows the connector's rear view with pin cavities numbered 1-28 arranged in three rows (1-7, 8-19, 20-28), with unused cavities marked. Below it, a table lists each pin (C3-1 through C3-28) with its wire color and circuit function. Functions covered are primarily automatic-transmission related: shift solenoid #1 and #2 controls, TCC solenoid control, A/T input and output shaft speed sensor signal high/low and shielded grounds, transmission range (TR) switch position signals (P, R, N, D, L), and a 4WD Low signal. Wire colors include GRN/RED, GRN, GRN/YEL, BLU/GRN, BLU/YEL, YEL/GRN, ORN/BLU, RED, ORN/GRN, BLK, ORN, WHT, ORN/WHT and GRN/BLU. Several pin ranges (C3-3 to C3-7, C3-9, C3-12 to C3-14, C3-19, C3-24 to C3-25) are not used. The row for C3-28 is cut off at the bottom of the scan. Readers can use this page to identify PCM transmission-control circuits and wire colors for diagnosis.

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Frequently asked questions

What connector does this page cover?: The back view and pinout of PCM Connector C3, a 28-pin connector with an orange terminal secondary lock, for a 2.0L VIN C powertrain.
Which pins control the shift solenoids?: C3-1 (GRN/RED wire) is Shift Solenoid #2 Control and C3-2 (GRN wire) is Shift Solenoid #1 Control.
What pin is the TCC solenoid control?: C3-8, with a GRN/YEL wire.
Which pins carry the A/T output shaft speed sensor signals?: C3-22 (ORN) is the signal low, C3-23 (WHT) is the signal high, and C3-20 (BLK) is the shielded ground.
Which pins on connector C3 are not used?: C3-3 through C3-7, C3-9, C3-12 through C3-14, C3-19, and C3-24 through C3-25 are listed as Not Used.