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Engine Management – V6 – Diagnostics Page 6C1-2–14
Engine Control Module Connector C-56
Figure 6C1-2 – 6
Terminal / Pin Wire Colour Circuit Description Function C-56–1 P/Y PWRTRN_HI_2 Ignition Voltage 1 C-56–2 GR/Y O2_HTR_3 B1S2 O2 Sensor Heater Control (Bank 1 Sensor 2) C-56–3 P/L RUN/CRANK Ignition Voltage 1 C-56–4
Not Used C-56–5
Not Used C-56–6
Not Used C-56–7 W/B 5VDC4 5 Volt Reference 4 C-56–8 V 5VGD4 Low Reference Ground 4 C-56–9 G/B AC-PRES A/C Refrigerant Pressure Sensor Signal C-56–10 R STOP_SW Stop Lamp Switch Signal C-56–11 B/R AIR_TMP IAT Sensor Signal C-56–12 Not Used C-56–13 Not Used C-56–14 Not Used C-56–15 Not Used C-56–16 Not Used C-56–17 P/L PWRTRN_HI_1 Ignition Voltage 1 C-56–18 O/W O2_HTR_4 B2S2 O2 Sensor Heater Control (Bank 2 Sensor 2) C-56–19 R/L FLPMP Fuel Pump Relay Control C-56–20 BR FAN_CTL Cooling Fan Control C-56–21 Not Used C-56–22 B/Y SPD_4K Vehicle Speed (VSS) C-56–23 BR/B CAN_HI_2 GMLAN Serial Data Bus – High C-56–24 L/R PWRTRN_LO Engine Control Relay Control C-56–25 B/Y 5VGD7 Low Reference – Ground 7 C-56–26 BR/W 5VDG1 Low Reference – Ground 1 C-56–27 Not Used |