Table Of Contents - Kubota WG1605-E3 Diagnostic Manual

Table of Contents

Contents4
Before Servicing And Repairing5
Safety Starting5
Safety Working6
Ecm System8
Table Of Contents9
Outline11
Overall Diagonostic Procedure11
Questioning12
Questioning Points12
Trouble Check Sheet For Wg Engines12
Abbreviations15
Symptom Charts By Components19
Gasoline Symptom Charts19
Lpg / Natural Gas Symptom Charts28
Set Up And Procedure Diagnostic Tool38
Diagnostic Connector Position38
Diagnostic Tool Connection Procedure39
Set Up And Procedure40
Overview40
Using The Gcp Diagnostic Display Tool40
Diagnostic Trouble Codes40
Diagnostic Calibration Configuration And Corrective Actions41
Fault/Diagnostic Trouble Code Interaction42
Custom Fault Variable Interface44
Historic Fault Information Interface45
Snapshot Data Interface46
Flight Data Recorder Interface46
Clear Faults Prompt47
Diagnostic Tests48
Spark Kill Test48
Injector Kill Test48
Dbw Test48
Closed-Loop Test49
Basic System Information52
Fuel System52
Fuel Metering Systems52
Engine Control Module52
Gasoline Schematic53
Lpg / Natural Gas Schematic54
Bi-Fuel Schematic55
Electric Gasoline Fuel Pump56
Gasoline Fuel Pressure Manifold56
Gasoline Injectors And Injector Rail57
Service Line57
Lpg / Natural Gas Fuel Lock Off57
Dual Stage Regulator (Dsr)58
Recommended Maintenance Schedule58
Direct Electronic Pressure Regulator59
Mixer Assembly60
Electronic Throttle Body61
Three Way Catalyst61
Heated Exhaust Gas Oxygen Sensor62
Fuel System Select Switch62
Engine Control Module (Ecm)63
Gasoline Ecm Input And Outputs63
Lpg / Natural Gas Ecm Input And Outputs64
Bi-Fuel Ecm Input And Outputs65
Engine Sensor Group66
Temperature Manifold Absolute Pressure66
Engine Coolant Temperature (Ect)66
Engine Oil Pressure (Eop)66
Foot Pedal Position Sensors (Fpp)67
Gasoline Pressure Sensors (Gps)67
Gas Temperature Sensors (Gts)67
Crankshaft Position Sensor (Ckp)67
Knock Sensor (Kcs)68
Electrical System69
System Wiring Diagram69
Connector Views69
Circuit Identification69
Joint Points71
Engine Side Of System Wireing Diagram72
Vehicle Side Of System Wireing Diagram74
Ecu Terminal Layout82
Repair Of Wiring Harness96
Connectors And Terminals96
Repair Of Wiring Haraness97
Connector End Repair Or Replacement97
Micro-Pack Connector97
Metri-Pack Connectors97
Weather Pack Connector98
Diagnosis99
Fuel System Checks99
General Lpg / Natural Gas Fuel Tank Maintenance99
Fuel Filter Maintenance100
Fuel Supply And Return Line Maintenance100
Lpg / Natural Gas Pressure Regulators101
Injector Rail And Injectors101
Electrical System Checks101
Battery102
Ecm Checks102
Wire Harness Checks102
Sensors102
Fuel System Diagnosis103
Gasoline Fuel System Diagnosis103
Fuel System Description103
Diagnostic Aids104
Lpg / Natural Gas Fuel System Diagnosis107
Dual Stage Regulator107
Restricted Exhaust System Diagnosis111
Exhaust System Description111
Check At Heated Exhaust Gas Oxygen Sensor111
Dtc List112
Diagnosis Procedure By Dtc133
Crank/Cam Sensors133
Dtc 16-Crank And/Or Cam Could Not Synchronize During Start133
Dtc 336-Crank Input Signal Noise134
Dtc 337-Loss Of Crankshaft Input Signal134
Dtc 341-Camshaft Input Signal Noise137
Dtc 342-Loss Of Camshaft Input Signal137
Dtc 87-Fuel Pressure Low140
Dtc 88-Fuel Pressure High140
Fp (Fuel Pressure Sensor) (Dtc 87, 88, 91, 92)140
Dtc 91-Fp (Fuel Pressure Sensor) Low Voltage141
Dtc 92-Fp (Fuel Pressure Sensor) High Voltage141
Dtc 91-Fp (Fuel Pressure) Low Voltage144
Dtc 107-Map Low Voltage146
Dtc 108-Map High Pressure146
Map (Manifold Absolute Pressure Sensor) (Dtc 107, 108)146
Dtc 111-Iat Higher Than Expected Stage 1149
Dtc 112-Iat Low Voltage149
Dtc 113-Iat High Voltage149
Iat (Intake Air Temperature Sensor) (Dtc 111, 112, 113, 127, 129)149
Dtc 117-Ect Low Voltage154
Dtc 118-Ect High Voltage154
Ect (Engine Coolant Temperature) (Dtc 116, 117, 118, 217)154
Tps (Throttle Position Sensor) (Dtc 121 To 123, 221 To 223, 2111, 2112, 2135)159
Dtc 123-Tps1 Signal Voltage High160
Dtc 222-Tps2 Signal Voltage Low160
Dtc 223-Tps2 Signal Voltage High160
Dtc 2111: Unable To Reach Lower Tps160
Dtc 2112: Unable To Reach Higher Tps161
Dtc 2135-Tps1/2 Simultaneous Voltages Out-Of-Range161
Dtc 122-Tps1 Signal Voltage Low163
Ego Sensors ((Exhaust Gas Oxygen) Sensors) (Dtc 134, 154)170
Dtc 154-Ego2 Open/Lazy171
Adaptive Learn (Dtc 171, 172, 1161 To 1164)174
Dtc 172-Adaptive Learn Bank1 Low (Gasoline)174
Dtc 171-Adaptive Learn Bank 1 High (Gasoline)175
Dtc 1161-Adaptive Learn High (Lpg)177
Dtc 1163-Adaptive Learn High (Ng)177
Dtc 1162-Adaptive Learn Low (Lpg)177
Dtc 1164-Adaptive Learn Low (Ng)177
Dtc 182-Fuel Temp (Gasoline) Low Voltage/Low Temp179
Fuel Temp (Fuel Temperature Sensor) (Dtc 182, 183, 187)179
Dtc 183-Fuel Temp (Gasoline) High Voltage/High Temp180
Dtc 187-Bp Ft Gaseous Fuel Extremely Low180
Diagnostic Aids Chart (Low Voltage/Low Temp)182
Engine Speed (Dtc 219, 1111, 1112)184
Dtc 219-Rpm Higher Than Max Allowed Governed Speed184
Dtc 1111-Rpm Above Fuel Rev Limit Level184
Dtc 1112-Rpm Above Spark Rev Limit Level185
Injectors (Dtc 261, 262, 264, 265, 267, 268, 270, 271)186
Dtc 326-Knock 1 Excessive Or Erratic Signal189
Dtc 327-Knock 1 Sensor Open Or Not Present189
Knock Sensor (Dtc 326, 327)189
Catalyst Monitor (Dtc 420, 1165, 1166)192
Oil Pressure Sensor (Dtc 524)193
Dtc 524-Oil Pressure Low194
Battery Voltage (Dtc 562, 563)195
Dtc 562-Battery Voltage (Vbat) Low195
Dtc 563-Battery Voltage (Vbat) High195
Dtc 601-Microprocessor Failure-Flash198
Dtc 604-Microprocessor Failure-Ram198
Dtc 606-Microprocessor Failure-Cop198
Internal Processor Diagnostics (Dtc 601, 604, 606, 1612 To 1616, 1673)198
Dtc 1612-Microprocessor Failure-Rti 1199
Dtc 1613-Microprocessor Failure-Rti 2199
Dtc 1614-Microprocessor Failure-Rti 3199
Dtc 1615-Microprocessor Failure-A/D200
Dtc 1616-Microprocessor Failure-Interrupt200
Dtc 1673-Calibration Configuration Error200
Dtc 628-Fuel Pump Relay Ground Short209
Fuel Pump Relay Control/Coil (Dtc 627 To 629)209
Dtc 629-Fuel Pump Relay Coil Short-To-Power210
External (Dtc 642, 643, 652, 653, 1611)214
Dtc 1611-Sensor Supply Voltage (5 Vext1/2) Simultaneous Out-Of-Range215
Dtc 642-Sensor Supply Voltage 1 Low (5 Vext1)216
Dtc 643-Sensor Supply Voltage 1 High (5 Vext1)216
Dtc 652-Sensor Supply Voltage 2 Low (5 Vext2)217
Dtc 653-Sensor Supply Voltage 2 High (5 Vext2)217
Power Relay Control / Coil (Dtc 686, 687)219
Dtc 686-Power Relay Ground Short219
Dtc 687-Power Relay Coil Short-To-Power219
Closed Loop (Dtc 1151 To 1156)222
Dtc 1151-Closed Loop High (Lpg)223
Dtc 1153-Closed Loop High (Ng)223
Dtc 1152-Closed Loop Low (Lpg)224
Dtc 1154-Closed Loop Low (Ng)224
Dtc 1155-Closed Loop Bank 1 High (Gasoline)224
Dtc 1156-Closed Loop Bank 1 Low (Gasoline)224
Epr (Hd Epr) Or Cfv (Dtc 1171 To 1177)225
Dtc 1171-Epr/Cfv Regulation Pressure Higher Than Expected225
Dtc 1172-Epr/Cfv Regulation Pressure Lower Than Expected225
Dtc 1173-Epr/Cfv Comm Lost225
Dtc 1174-Epr/Cfv Voltage Supply High226
Dtc 1175-Epr/Cfv Voltage Supply Low226
Dtc 1176-Epr/Cfv Internal Actuator Fault Detection226
Dtc 1177-Epr/Cfv Internal Circuitry Fault Detection226
Dtc 1121-Fpp1/2 Simultaneous Voltages Out-Of-Range230
Dtc 2121-Fpp1 Lower Than Fpp2230
Fpp (Foot Pedal Position Switch) (Dtc 1121, 2121, 2126, 2122, 2123, 2127, 2128)230
Dtc 2126-Fpp1 Higher Than Fpp2231
Dtc 2122-Fpp1 Voltage High231
Dtc 2127-Fpp2 Voltage High231
Dtc 2123-Fpp1 Voltage Low231
Spark Coil Primary238