← XJ AI

1991 JEEP CHEROKEE XJ

SBEC ENGINE HARNESS WIRING DIAGRAM

Source: Mitchell Wiring Diagrams • SBEC 60-Pin ECU • OEM Wire Colors

AI Fault Diagnosis →
Use +/− controls to zoom • Click any label to trace a wire across all sheets
ECU, Engine Sensors, Relays & Injectors
WIRING DIAGRAM — 1991 JEEP CHEROKEE XJ (2.5L & 4.0L) — SBEC ENGINE HARNESS ELECTRONIC CONTROL UNIT (ECU) (2.5L & 4.0L) — 60 PIN MAP SENS1 COOLANT TEMP SENS2 BATTERY3 SENS GROUND4 SIG GROUND5 SENS 5V SUPPLY6 8V SUPPLY7 START8 IGN START/RUN9 PWR STEERING SENS10 GROUND (2.5L)11 GROUND12 INJECTOR #413 INJECTOR #314 INJECTOR #215 INJECTOR #116 17 18 IGNITION19 ALTERNATOR IND20 AIR TEMP SENS21 THROTTLE POSTN SENS22 23 SPEED SENS (−)24 DIAGNOSTIC (DATA 2)25 26 A/C SELECT27 A/C REQUEST28 TCC FEED (BRAKE)29 NEUTRAL SAFETY30 31 CHECK ENG IND32 33 A/C CLUTCH RELAY34 35 36 37 INJECTOR #538 AIS STEPPER39 AIS STEPPER40 OXYGEN SENS41 42 TACH SIG43 SYNC SENS SIG44 DIAGNOSTIC (DATA 1)45 46 SPEED SIG47 48 49 50 FUEL PUMP RELAY51 52 53 UPSHIFT IND54 MAINTENANCE IND55 Z2 SENS56 INJECTOR #657 AIS STEPPER58 59 AIS STEPPER60 COOLANT TEMP SENS AB TANBLK MAP SENS AIR TEMP SENS AB BLKTAN THROTTLE POSN SENS CRANK POSN SENS ABC SYNC SENS (DISTR) 123 SPEED SENS OXYGEN SENS AUTO SHUTDOWN RELAY DK GRN-BLK PNK-YEL YEL ORG-GRN FUEL PUMP RELAY ORG-GRN PNK-YEL IGN LPS FUSE #3 (PDC) FUEL TANK UNIT ORG-BLK BLK-YEL FUEL GAUGE (INST CLSTR) DIAGNOSTIC CONN 1 ORG-GRN 2 ORG-GRN 3 YEL 4 BLK-PNK 5 BLK-RED 6 BLK-YEL 7 BLK-YEL DISTRIBUTOR NCA IGN COIL ALTERNATOR (4.0L) ALTERNATOR (2.5L) DK GN-BK BUS (FROM ASD RLY) #1 LT BLU #2 LT GRN #3 TAN-YEL #4 YEL (4.0L) #5 WHT #6 BRN-GRN FUEL INJECTORS AIR STEPPER MOTOR ABLU-YEL DGRN-BLK CPNK-BLK BRED-YEL POWER STEERING SW BLU-ORGBLK STARTER RLY A/C RELAY A/C BLOWER SW STOP LT SW WARN IND (CHECK ENG) C5 A/C RELAY (CLUTCH) TACH (INST CLSTR) H6 WARN IND (UPSHIFT) F6 WARN IND (EMISS MAINT) C4 F2RED-WHT F24TAN V10PNK-YEL F15BRN-RED E99BLK-YEL F100BRN-YEL F53WHT-BLK 86GRY-GRN I1YEL F78BLU-ORG 98BLK (2.5L) 99BLK F74YEL F73TAN-YEL F72LT GRN F71LT BLU F23YEL-BLK 59TAN-BLK F7TAN-BLU F50YEL-GRN F52RED-GRN F84BLK-RED 265LT BLU-RED 169LT BLU-WHT 116LT BLU-YEL 34BLK-WHT (HS) E19GRN-RED 135BLU-WHT F75WHT F70GRN-BLK F69RED-YEL F6GRY 339ORG F65GRY-BLK F83BLK-PNK C8BLU F17ORG-GRN 126BRN M19GRN-ORG Z2DK BLU-BLK F76BRN-GRN F67BLU-YEL F69PNK-BLK DK GRN-BLK ORG-BLK YEL-BLK BLK-YEL GRN-RED ORG BRN GRN-ORG
OEM Wire Color Reference Key
BLK = Black
RED = Red
BLU = Blue
GRN = Green
YEL = Yellow
ORG = Orange
TAN = Tan
PNK = Pink
VIO = Violet
GRY = Gray
WHT = White
BRN = Brown
LT BLU = Light Blue
LT GRN = Light Green
DK BLU = Dark Blue
DK GRN = Dark Green
Tracer wires shown as dashed lines (e.g., BLK-WHT = Black with White tracer). Wire gauge in AWG shown where labeled in source diagram.
All wire colors, circuit codes, and pin assignments per 1991 Jeep Cherokee XJ Mitchell wiring diagrams.
SBEC 60-pin ECU • OEM wire colors • 2.5L & 4.0L engine variants.
Always verify against your specific vehicle before cutting or connecting any wires.