Home/GMC/Savana G2500/GMC Savana G2500 (1996-2013)/Repair manual/Testing & Diagnostics/Engine Control System - 6.0L - Alternative Fuel (Introducti…
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Engine Control System - 6.0L - Alternative Fuel (Introductions): Wiring GMC Savana G2500

Testing & Diagnostics 3 illustrations ~3176 words

Powertrain Control Module (PCM) Connector End Views (w/o JL4)

Powertrain Control Module (PCM) Terminal Identification - C1 Connector Part Information 80-Way F Micro-Pack 100W Series Sealed Assembly 12191489 Does not include the following: TPA (BU) 12176408 Terminal - 12084912 Pin Wire Color Circuit No. Function 1 BK/WH 1551 Ground 2 L-GN 1867 12-Volt Reference 3 PK/BK 1746 Fuel Injector 3 Control 4 L-GN/BK 1745 Fuel Injector 2 Control 5-6 - - Not Used 7 GY 2705 5-Volt Reference 8 GY 2701 5-Volt Reference 9-10 - - Not Used 11 L-BU 1876 Knock Sensor 2 Signal 12 YE 573 CKP Sensor 1 Signal 13 YE/BK 5694 Fuel Rail Pressure PWM Signal 14-16 - - Not Used 17 D-BU 1225 Transmission Fluid Pressure Switch Signal B 18 OR 1226 Transmission Fluid Pressure Switch Signal C 19 PK 439 Ignition 1 Voltage 20 RD/WH 440 Battery Positive Voltage 21 PU 574 Low Reference 22 - - Not Used 23 TN 2759 Low Reference 24 BK/WH 1551 Ground 25 TN 1671 HO2S Low Signal - Bank 2 Sensor 2 26 TN 1667 HO2S Low Signal - Bank 2 Sensor 1 27 BK/WH 1551 Ground 28 TN/WH 1669 HO2S Low Signal - Bank 1 Sensor 2 29 TN 1664 HO2S Low Signal - Bank 1 Sensor 1 30 PU 5607 Fuel Gauge Select Signal 31 - - Not Used 32 TN/WH 771 Transmission Range Switch Signal A 33 PU 420 TCC Brake Switch/Cruise Control Release Signal 34 WH 776 Transmission Range Switch Signal P 35 - - Not Used 36 TN 1744 Fuel Injector 1 Control 37 YE/BK 846 Fuel Injector 6 Control 38 - - Not Used 39 YE/BK 625 Starter Enable Relay Control 40 BK/WH 1551 Ground 41 - - Not Used 42 D-BU 5617 Low Pressure Lock-Off (LPL) Control 43 OR/BK 877 Fuel Injector 7 Control 44 L-BU/BK 844 Fuel Injector 4 Control 45 GY 5634 5-Volt Reference 46 GY 2709 5-Volt Reference 47 - - Not Used 48 GY 597 5-Volt Reference 49-50 - - Not Used 51 D-BU 496 Knock Sensor 1 Signal 52 - - Not Used 53 TN 2762 Low Reference 54 OR/BK 469 Low Reference 55 - - Not Used 56 PK/BK 5605 Fuel Injection Control Module Status 57 RD/WH 440 Battery Positive Voltage 58 D-GN 1049 Class 2 Serial Data 59 YE 710 Class 2 Serial Data 60 TN 2752 Low Reference 61 PK/BK 632 Low Reference 62 - - Not Used 63 BK 2755 Low Reference 64 BK/WH 1551 Ground 65 PU 1670 HO2S High Signal - Bank 2 Sensor 2 66 PU 1666 HO2S High Signal - Bank 2 Sensor 1 67 BK/WH 1551 Ground 68 PU/WH 1668 HO2S High Signal - Bank 1 Sensor 2 69 PU/WH 1665 HO2S High Signal - Bank 1 Sensor 1 70 BN 1174 Oil Level Switch Signal 71 - - Not Used 72 YE 772 Transmission Range Switch Signal B 73 BN/WH 633 CMP Sensor Signal 74 YE 410 ECT Sensor Signal 75 PK 1020 Off/Run/Crank Voltage 76 TN/WH 845 Fuel Injector 5 Control 77 D-BU/WH 878 Fuel Injector 8 Control 78-79 - - Not Used 80 TN 2761 Low Reference

Powertrain Control Module (PCM) Terminal Identification - C2 Connector Part Information 80-Way F Micro-Pack 100W Series Sealed Assembly 12191488 Does not include the following: TPA (GN) - 15358857 Terminal - 12084912 Pin Wire Color Circuit No. Function 1 BK/WH 1551 Ground 2 BN 418 TCC PWM Solenoid Valve Control 3 L-GN 5606 Fuel Gauge Select Signal 4 - - Not Used 5 OR 2531 Alternative Fuel Operation (AFO) Enable 6 OR/BK 1228 PC Solenoid Valve High Control (Sol. A) 7 - - Not Used 8 L-BU/WH 1229 PC Solenoid Valve Low Control (Sol. A) 9 D-GN/WH 465 Fuel Pump Relay Control - Primary 10-12 - - Not Used 13 L-BU/BK 396 Cruise Control Engaged Signal 14 D-GN/WH 5633 Alternative Fuel Tank Pressure Sensor Signal 15 OR 225 Generator Turn On Signal 16 - - Not Used 17 D-GN/WH 2523 A/C Request Signal 18-19 - - Not Used 20 PU 401 Signal Low - Front 21 YE 400 Signal High - Front 22 OR/BK 1230 AT ISS High Signal 23 D-BU/WH 1231 AT ISS Low Signal 24 D-BU 411 Throttle Position Signal 25 TN 472 IAT Sensor Signal 26 PU 2121 IC 1 Control 27 OR 2127 IC 7 Control 28 L- BU/WH 2126 IC 6 Control 29 D-GN/WH 2124 IC 4 Control 30 D-BU/WH 5695 Fuel Rail Temperature Sensor PWM Signal 31 YE 492 MAF Sensor Signal 32 L-GN 432 MAP Sensor Signal 33 L-BU 5618 High Pressure Lock-Off (HPL) Control 34 D-GN/WHT 428 EVAP Canister Purge Solenoid Control 35-36 - - Not Used 37 D-GN 83 Cruise Control Inhibit Signal 38 - - Not Used 39 OR 631 12-Volt Reference 40 BK/WH 1551 Ground 41-42 - - Not Used 43 D-GN/WH 459 A/C Compressor Clutch Relay Control 44 - - Not Used 45 WH 1310 EVAP Canister Vent Solenoid Control 46 BN/WH 419 MIL Control 47 YE/BK 1223 2-3 Shift Solenoid or Shift Solenoid B Valve Control 48 L-GN 1222 1-2 Shift Solenoid or Shift Solenoid A Valve Control 49 YE/BK 1827 Vehicle Speed Signal 50 D-GN/WH 817 Vehicle Speed Signal 51 YE/BK 1227 TFT Sensor Signal 52 PU 5035 HO2S Heater Low Control - Bank 1 Sensor 2 53 YE 5036 HO2S Heater Low Control - Bank 2 Sensor 2 54 PU 1589 Fuel Level Sensor Signal - Primary 55 D-GN 603 A/C Low Pressure Switch Signal 56 - - Not Used 57 TN 470 Low Reference 58 TN/WH 331 Oil Pressure Sensor Signal 59 PU 806 Crank Voltage 60 BN 2129 Low Reference 61 BN/WH 2130 Low Reference 62 GY 773 Transmission Range Switch Signal C 63 PK 1224 Transmission Fluid Pressure Switch Signal A 64 D-GN 890 Fuel Tank Pressure Sensor Signal 65 - - Not Used 66 PU/WH 2128 IC 8 Control 67 OR/WH 2122 IC 2 Control 68 D-GN 2125 IC 5 Control 69 L-BU 2123 IC 3 Control 70-71 - - Not Used 72 L-BLU 5038 HO2S Heater Low Control - Bank 1 Sensor 1 73 D-BU 5632 Alternative Fuel Tank Temperature Signal 74 PU/WH 5037 HO2S Heater Low Control - Bank 2 Sensor 1 75 GY 23 Generator Field Duty Cycle Signal 76 L-GN/WH 1749 IAC Coil B High Control 77 L-GN/BK 444 IAC Coil B Low Control 78 L-BLU/BK 1748 IAC Coil A Low Control 79 L-BU/WH 1747 IAC Coil A High Control 80 - - Not Used

Fuel Injection Control Module Connector End Views

Clear 36-Way Connector End Connector (White) Part Information Connector - 12110487 Seal - 12110489 Strain Relief - 12110490 Terminal - 12084912 TPA (CL) - 12110488 Pin Wire Color Circuit No. Function 1 D-BU 5622 Fuel Rail Pressure (FRP) Sensor Signal 2 GY 474 5-Volt Reference 3 D-BU/WH 878 Fuel Injector 8 Signal 4 OR/BK 877 Fuel Injector 7 Signal 5 YE/BK 846 Fuel Injector 6 Signal 6 TN/WH 845 Fuel Injector 5 Signal 7 L-BU/BK 844 Fuel Injector 4 Signal 8 PK/BK 1746 Fuel Injector 3 Signal 9 L-GN/BK 1745 Fuel Injector 2 Signal 10 TN 1744 Fuel Injector 1 Signal 11 BK/WH 1551 Ground 12 OR 5623 AF Fuel Injector 1 Control 13 PU 5625 AF Fuel Injector 3 Control 14 L-GN 5627 AF Fuel Injector 5 Control 15 D-BU 5629 AF Fuel Injector 7 Control 16 YE/BK 5694 Fuel Rail Pressure (FRP) Sensor PWM Output 17 PK/BK 5605 Fuel Injector Control Module (FICM) Status 18 PK 1020 Ignition Positive Voltage 19 YE 5629 Fuel Rail Temperature (FRT) Sensor Signal 20 TN 476 Ground 21 D-BU/WH 878 Gasoline Fuel Injector 8 Control 22 OR/BK 877 Gasoline Fuel Injector 7 Control 23 YE/BK 846 Gasoline Fuel Injector 6 Control 24 TN/WH 845 Gasoline Fuel Injector 5 Control 25 L-BU/BK 844 Gasoline Fuel Injector 4 Control 26 PK/BK 1746 Gasoline Fuel Injector 3 Control 27 L-GN/BK 1745 Gasoline Fuel Injector 2 Control 28 TN 1744 Gasoline Fuel Injector 1 Control 29 BK/WH 1551 Ground 30 YE 5624 AF Fuel Injector 2 Control 31 BN 5626 AF Fuel Injector 4 Control 32 L-BU 5628 AF Fuel Injector 6 Control 33 D-GN 5630 AF Fuel Injector 8 Control 34 D-BU/WH 5695 Fuel Rail Temperature (FRT) Sensor PWM Output 35 OR 2531 Alternative Fuel (AF) Enable 36 - - Not Used

Engine Controls Connector End Views

C001 Connector End Views Connector Part Information 12160542 20-Way M Micro Pack 100W Series (GY) Connector Part Information 12186609 20-Way F Micro Pack 100W Series (GY) Pin Wire Color Circuit No. Function Pin Wire Color Circuit No. Function A - - Not Used A - - Not Used B OR 5619 LPL Ignition Voltage B OR 5619 LPL Ignition Voltage C TN 1744 Fuel Injector 1 Signal C TN 1744 Fuel Injector 1 Signal D L-GN/BK 1745 Fuel Injector 2 Signal D L-GN/BK 1745 Fuel Injector 2 Signal E PK/BK 1746 Fuel Injector 3 Signal E PK/BK 1746 Fuel Injector 3 Signal F L-BU/BK 844 Fuel Injector 4 Signal F L-BU/BK 844 Fuel Injector 4 Signal G TN/WH 845 Fuel Injector 5 Signal G TN/WH 845 Fuel Injector 5 Signal H YE/BK 846 Fuel Injector 6 Signal H YE/BK 846 Fuel Injector 6 Signal J OR/BK 877 Fuel Injector 7 Signal J OR/BK 877 Fuel Injector 7 Signal K D-BU/WH 878 Fuel Injector 8 Signal K D-BU/WH 878 Fuel Injector 8 Signal L BK/WH 1551 Ground L BK/WH 1551 Ground M D-BU/WH 5695 FRT PWM Output M D-BU/WH 5695 FRT PWM Output N PK/BK 5605 FICM Diagnostic N PK/BK 5605 FICM Diagnostic P PK 1020 FICM Ignition 0 Voltage P PK 1020 FICM Ignition 0 Voltage R YE 5269 FRT Signal R YE 5269 FRT Signal S TN 476 Low Reference S TN 476 Low Reference T OR 5623 CNG Fuel Injector 1 Control T OR 5623 CNG Fuel Injector 1 Control U PU 5625 CNG Fuel Injector 3 Control U PU 5625 CNG Fuel Injector 3 Control V YE 5624 CNG Fuel Injector 2 Control V YE 5624 CNG Fuel Injector 2 Control W BN 5626 CNG Fuel Injector 4 Control W BN 5626 CNG Fuel Injector 4 Control

Scheme 8

Scheme 8: Engine Controls Connector End Views

C002 Connector End Views Connector Part Information 12160542 20-Way M Micro Pack 100W Series (GY) Connector Part Information 12186609 20-Way F Micro Pack 100W Series (GY) Pin Wire Color Circuit No. Function Pin Wire Color Circuit No. Function A PK 639 Igntion Voltage A PK 639 Ignition Voltage B D-BU 5617 LPL Relay Control B D-BU 5617 LPL Relay Control C TN 5625 Gasoline Fuel Injector 1 Control C TN 5625 Gasoline Fuel Injector 1 Control D L-GN/BK 1745 Gasoline Fuel Injector 2 Control D L-GN/BK 1745 Gasoline Fuel Injector 2 Control E PK/BK 1746 Gasoline Fuel Injector 3 Control E PK/BK 1746 Gasoline Fuel Injector 3 Control F L-BU/BK 844 Gasoline Fuel Injector 4 Control F L-BU/BK 844 Gasoline Fuel Injector 4 Control G TN/WH 845 Gasoline Fuel Injector 5 Control G TN/WH 845 Gasoline Fuel Injector 5 Control H YE/BK 846 Gasoline Fuel Injector 6 Control H YE/BK 846 Gasoline Fuel Injector 6 Control J OR/BK 877 Gasoline Fuel Injector 7 Control J OR/BK 877 Gasoline Fuel Injector 7 Control K D-BU/WH 878 Gasoline Fuel Injector 8 Control K D-BU/WH 878 Gasoline Fuel Injector 8 Control L YE/BK 5694 FRP PWM Output L YE/BK 5694 FRP PWM Output M GY 474 5-Volt Reference M GY 474 5-Volt Reference N BK/WH 1551 Ground N BK/WH 1551 Ground P - - Not Used P - - Not Used R D-BU 5622 FRP Signal R D-BU 5622 FRP Signal S OR 2531 AFO Enable S OR 2531 AFO Enable T L-GN 5627 CNG Fuel Injector 5 Control T L-GN 5627 CNG Fuel Injector 5 Control U D-BU 5629 CNG Fuel Injector 7 Control U D-BU 5629 CNG Fuel Injector 7 Control V L-BU 5628 CNG Fuel Injector 6 Control V L-BU 5628 CNG Fuel Injector 6 Control W D-GN 5630 CNG Fuel Injector 8 Control W D-GN 5630 CNG Fuel Injector 8 Control

C003 Connector End Views Connector Part Information 15326806 2-Way M Sealed 150 Series (BK) Connector Part Information 15326801 2-Way F Sealed 150 Series (BK) Pin Wire Color Circuit No. Function Pin Wire Color Circuit No. Function A L-GN 5606 FIL Control A L-GN 5606 FIL Control B PU 5607 Fuel Gauge Select Switch Signal B PU 5607 Fuel Gauge Select Switch Signal

Scheme 9

Scheme 9

C004 Connector End Views Connector Part Information 15326840 8-Way M GT 150 Sealed 4.0 (BK) Connector Part Information 15326835 8-Way F GT 150 Sealed 4.0 (BK) Pin Wire Color Circuit No. Function Pin Wire Color Circuit No. Function A OR/BK 5620 HPL Ignition Voltage - Rear Tanks A OR/BK 5620 HPL Ignition Voltage - Rear Tanks B OR 5621 HPL Ignition Voltage - Mid-frame Tank (KL8) B OR 5621 HPL Ignition Voltage - Mid-frame Tank (KL8) C D-BU 5632 FTT Sensor Signal C D-BU 5632 FTT Sensor Signal D BK/WH 1551 Ground D TN 5631 Low Reference E D-GN/WH 5633 FTP Sensor Signal E D-GN/WH 5633 FTP Sensor Signal F GY 5634 5-Volt Reference F GY 5634 5-Volt Reference G BK 1250 HPL Solenoid Ground G BK 1250 HPL Solenoid Ground H - - Not Used H - - Not Used

C005 Connector End Views Connector Part Information 15326854 12-Way M GT 150 Sealed 4.0 (BK) Connector Part Information 15326849 12-Way F GT 150 Sealed 4.0 (BK) Pin Wire Color Circuit No. Function Pin Wire Color Circuit No. Function A TN 1744 Gasoline Fuel Injector 1 Control A TN 1744 Gasoline Fuel Injector 1 Control B PK/BK 1746 Gasoline Fuel Injector 3 Control B PK/BK 1746 Gasoline Fuel Injector 3 Control C TN/WH 845 Gasoline Fuel Injector 5 Control C TN/WH 845 Gasoline Fuel Injector 5 Control D OR/BK 877 Gasoline Fuel Injector 7 Control D OR/BK 877 Gasoline Fuel Injector 7 Control E PK 139 Ignition Voltage E PK 139 Ignition Voltage F PK 139 Ignition Voltage F PK 139 Ignition Voltage G PK 139 Ignition Voltage G PK 139 Ignition Voltage H PK 139 Ignition Voltage H PK 139 Ignition Voltage J OR 5623 CNG Fuel Injector 1 Control J OR 5623 CNG Fuel Injector 1 Control K PU 5625 CNG Fuel Injector 3 Control K PU 5625 CNG Fuel Injector 3 Control L L-GN 5627 CNG Fuel Injector 5 Control L L-GN 5627 CNG Fuel Injector 5 Control M D-BU 5629 CNG Fuel Injector 7 Control M D-BU 5629 CNG Fuel Injector 7 Control

Scheme 10

Scheme 10

C006 Terminal Identification Connector Part Information 15326854 12-Way M GT 150 Sealed 4.0 (BK) Connector Part Information 15326849 12-Way F GT 150 Sealed 4.0 (BK) Pin Wire Color Circuit No. Function Pin Wire Color Circuit No. Function A L-GN/BK 1745 Gasoline Fuel Injector 2 Control A L-GN/BK 1745 Gasoline Fuel Injector 2 Control B L-BU/BK 844 Gasoline Fuel Injector 4 Control B L-BU/BK 844 Gasoline Fuel Injector 4 Control C YE/BK 846 Gasoline Fuel Injector 6 Control C YE/BK 846 Gasoline Fuel Injector 6 Control D D-BU/WH 878 Gasoline Fuel Injector 8 Control D D-BU/WH 878 Gasoline Fuel Injector 8 Control E PK 239 Ignition Voltage E PK 239 Ignition Voltage F PK 239 Ignition Voltage F PK 239 Ignition Voltage G PK 239 Ignition Voltage G PK 239 Ignition Voltage H PK 239 Ignition Voltage H PK 239 Ignition Voltage J YE 5624 CNG Fuel Injector 2 Control J YE 5624 CNG Fuel Injector 2 Control K BR 5626 CNG Fuel Injector 4 Control K BR 5626 CNG Fuel Injector 4 Control L L-BU 5628 CNG Fuel Injector 6 Control L L-BU 5628 CNG Fuel Injector 6 Control M D-GN 5630 CNG Fuel Injector 8 Control M D-GN 5630 CNG Fuel Injector 8 Control

Fuel Rail Pressure Sensor Terminal Identification Connector Part Information 12065287 3-Way F Metri-Pack Sealed 150 Series (BK) Pin Wire Color Circuit No. Function A TN 476 Low Reference B GY 474 5-Volt Reference C D-BU 5622 Sensor Signal

AF Fuel Injector #1 Terminal Identification Connector Part Information 12129140 2-Way F Metri Pack 280.1 Pull to Seat (BK) Pin Wire Color Circuit No. Function A PN 139 Injector Power B OR 5623 Injector Control

AF Fuel Injector #2 Terminal Identification Connector Part Information 12129140 2-Way F Metri Pack 280.1 Pull to Seat (BK) Pin Wire Color Circuit No. Function A PN 239 Injector Power B YE 5624 Injector Control

AF Fuel Injector #3 Terminal Identification Connector Part Information 12129140 2-Way F Metri Pack 280.1 Pull to Seat (BK) Pin Wire Color Circuit No. Function A PN 139 Injector Power B PU 5625 Injector Control

AF Fuel Injector #4 Terminal Identification Connector Part Information 12129140 2-Way F Metri Pack 280.1 Pull to Seat (BK) Pin Wire Color Circuit No. Function A PN 239 Injector Power B BN 5626 Injector Control

AF Fuel Injector #5 Terminal Identification Connector Part Information 12129140 2-Way F Metri Pack 280.1 Pull to Seat (BK) Pin Wire Color Circuit No. Function A PN 139 Injector Power B L-GN 5627 Injector Control

AF Fuel Injector #6 Terminal Identification Connector Part Information 12129140 2-Way F Metri Pack 280.1 Pull to Seat (BK) Pin Wire Color Circuit No. Function A PN 239 Injector Power B L-BU 5628 Injector Control

AF Fuel Injector #7 Terminal Identification Connector Part Information 12129140 2-Way F Metri Pack 280.1 Pull to Seat (BK) Pin Wire Color Circuit No. Function A PN 139 Injector Power B D-BU 5629 Injector Control

AF Fuel Injector #8 Terminal Identification Connector Part Information 12129140 2-Way F Metri Pack 280.1 Pull to Seat (BK) Pin Wire Color Circuit No. Function A PN 239 Injector Power B D-GN 5630 Injector Control

Low Pressure Lock-Off Relay Terminal Identification Connector Part Information 12129716 4-Way F Sealed Flexlock 280 Series (M-GY) Pin Wire Color Circuit No. Function 30 PK 639 Ignition Voltage 85 PK 639 Ignition Voltage 86 D-BU 5617 Relay Control 87 OR 5619 LPL Power

Low Pressure Lock-Off Solenoid Terminal Identification Connector Part Information 12052641 2-Way F Metri-Pack Sealed 150 Series (BK) Pin Wire Color Circuit No. Function A BK 1250 Ground B OR 5619 Solenoid Voltage

High Pressure Lock-Off Solenoid Terminal Identification Connector Part Information 12052641 2-Way F Metri-Pack Sealed 150 Series (BK) Pin Wire Color Circuit No. Function A OR/BK 5620 Solenoid Voltage B BK 12500 Ground

Fuel Tank Temperature Sensor Terminal Identification Connector Part Information 12052644 2-Way F Metri-Pack Sealed 150 Series (L-GY) Pin Wire Color Circuit No. Function A TN 5631 Low Reference B D-BU 5632 Sensor Signal

AF Fuel Tank Pressure Sensor Terminal Identification Connector Part Information 12065287 3-Way F Metri-Pack Sealed 150 Series (BK) Pin Wire Color Circuit No. Function A TN 5631 Low Reference B GY 5634 5-Volt Reference C D-GN/WH 5633 Sensor Signal

Fuel Gauge Select Switch Terminal Identification Connector Part Information 15332145 8-Way F GT 150 Series (BK) Pin Wire Color Circuit No. Function A PU 5607 Fuel Gauge Select Switch Signal B - - Not used C L-GN 5606 Fuel Indicator Lamp Control D-H - - Not Used