Tests W/Codes - 4.0L
- Introduction
- Self-Diagnostic System
- Testing
- Diagnosis With DRB-II & Jeep Adapter
- Fault Codes Menu
- Ecu Location
- Code Charts
- Fault 1000: Ignition Circuit Low
- Fault 1001: Ignition Circuit High
- Fault 1002: O2 Heater Circuit Low
- Fault 1004: Battery Voltage Low
- Fault 1005: Sensor Ground Circuit Out Of Limits
- Fault 1013: Ignition Circuit High
- Fault 1014: Fuel Pump Circuit Low
- Fault 1015: Fuel Pump Circuit High
- Fault 1016: Manifold Air Temperature (Mat) Circuit Low
- Fault 1017: Manifold Air Temperature (Mat) Circuit High
- Fault 1018: No Serial Data
- Fault 1020: No Sync Pulse Seen
- Fault 1021: Engine Failed To Start Due To Mechanical,
- Fault 1022: Start Circuit Low
- Fault 1027: Ecu Sees Wide Open Throttle
- Fault 1028: Ecu Doesn't See Wide Open Throttle
- Fault 1031: Ecu Sees Closed Throttle
- Fault 1032: Ecu Doesn't See Closed Throttle
- Fault 1037: Throttle Position Sensor (TPS) Circuit Low
- Fault 1038: Park/Neutral Circuit High (A/T)
- Fault 1039: Park/Neutral Circuit Low (A/T)
- Fault 1040: Latched B+ Circuit Low
- Fault 1041: Latched B+ Circuit High
- Fault 1042: No Latched B+ 1/2 Volt Drop
- Fault 1044: Fault In Shift Light Circuit (M/T)
- Fault 1047: Wrong Ecu
- Fault 1048: M/T Vehicle With A/T Ecu
- Fault 1049: A/T Vehicle With M/T Ecu
- Fault 1050: Idle Rpm Less Than 500
- Fault 1051: Idle Rpm Greater Than 2000
- Fault 1052: Map Sensor Out Of Limits
- Fault 1053: Change In Map Reading Out Of Limits
- Fault 1054: Coolant Temp Sensor Circuit Low
- Fault 1055: Coolant Temp Sensor Circuit High
- Fault 1056: Inactive Coolant Temp Sensor
- Fault 1057: Knock Circuit Shorted
- Fault 1058: Knock Value Out Of Limits
- Fault 1059: A/C Request Circuit Low
- Fault 1060: A/C Request Circuit High
- Fault 1061: A/C Select Circuit Low
- Fault 1062: A/C Select Circuit High
- Fault 1063: A/C Clutch Circuit Low
- Fault 1064: A/C Clutch Circuit High
- Fault 1065: O2 Sensor Reads Rich
- Fault 1066: O2 Sensor Reads Lean
- Fault 1067: Latch Relay Circuit Low
- Fault 1068: Latch Relay Circuit High
- AULT 1069: No Tach
- Fault 1073: Ecu Doesn't See Speed Sensor
- Fault 1200: Defective Ecu Or Short To Voltage
- Fault 1201: Injector Short To B+
- Fault 1202: All Injectors Shorted To Ground
- Fault 1203: Injector No. 1 Shorted To Ground
- Fault 1204: Injector No. 2 Shorted To Ground
- Fault 1205: Injector No. 3 Shorted To Ground
- Fault 1206: Injector No. 4 Shorted To Ground
- Fault 1207: Injector No. 5 Shorted To Ground
- Fault 1208: Injector No. 6 Shorted To Ground
- Fault 1209: All Injectors Open
- Fault 1210: Injector No. 1 Circuit Open
- Fault 1211: Injector No. 2 Circuit Open
- Fault 1212: Injector No. 3 Circuit Open
- Fault 1213: Injector No. 4 Circuit Open
- Fault 1214: Injector No. 5 Circuit Open
- Fault 1215: Injector No. 6 Circuit Open
- Fault 1216: No Voltage At Ecu From A/C Relay
- Fault 1217: No Voltage At Ecu From O2 Heater Relay
- Fault 1218: No Voltage At Ecu From Power Latch Relay
- Fault 1219: No Voltage At Ecu From Shift Light
- Fault 1220: No Voltage At Ecu From EGR Solenoid
- Fault 1222: Ignition Module (MPA) Not Grounded
- Fault 1223: Checking For Open Injector Feed Circuit