Isuzu Truck 1992-2001 FRR, FSR, FTR & FVR (TICS) Engine Control System

FRR, FSR, FTR & FVR (TICS) Engine Control System

Description

The Timing and Injection Rate Control System (TICS), which is controlled by the electronic control unit, is designed to maintain exhaust emission levels at US regulations while providing good drive ability and fuel efficiency. The functions of the system are based on data gathered by sensors located throughout the engine. The Engine Control Module (ECM) maintains control over fuel injection timing, while monitoring the system for faulty operation with its diagnostic capabilities.

Accessing Diagnostic Trouble Codes

Connect a Scan Tool to the check connector A, Fig. 1. There should be a visual instruction displayed. If there is no display or the scan tool reads “No Data Received From Engine Enter to Retry Func to Recall Data” with engine control switch On, refer to “Chart 1.”

Reading Codes

The ECM communicates via the diagnosis switch (Green connector) under the instrument panel, Fig. 1.

When the diagnosis switch is disconnected, the engine control switch must be at the On position, with the engine not running. At this point, the Check Engine MIL should flash DTC 1 three times consecutively.

DTC 1 indicated that the ECMs diagnostic system is operating. If DTC 1 is not indicated, a problem is present within the diagnostic system itself, and should be checked by consulting the appropriate diagnostic chart.

While engine is not running, Diagnostic Trouble Code (DTC) 15 may be flashed. If engine speed sensor is OK , DTC 15 should not be flashed after engine is started. If it does not refer to “Troubleshooting.”

Diagnostic Test Mode

When the Diagnostic switch (Green connector) is disconnected with the engine control switch On and the engine not running, the system will enter what is called the Diagnostic Test Mode. In this Mode the ECM will:
1. Display a DTC 1 by flashing the “Check Engine”Malfunction Indicator Lamp (MIL).
2. Display a DTC 15 by flashing the “Check Engine”MIL.
3. Display any stored trouble codes by flashing the “Check Engine” MIL. Each code will be flashed three times.

Diagnostic Trouble Code Interpretation

Wiring Diagram

CLICK HERE TO DOWNLOAD THE WIRING DIAGRAM

Connector Pin Identification

DOWNLOAD HERE THE CONNECTOR PIN IDENTIFICATION

DIAGNOSTIC TROUBLE CODE

Chart 1 System Diagnostic Procedure

Chart 2 System Diagnostic Procedure

Chart 3 System Diagnostic Procedure

Chart 4 System Diagnostic Procedure

Chart 5 System Diagnostic Procedure

Chart 6 System Diagnostic Procedure

Chart 7/Code 13 Rack Sensor Circuit Failure

Chart 8 System Diagnostic Procedure

Chart 9/Code 15 Engine Speed Sensor Circuit Failure

Chart 10/Code 23 Engine Coolant Temperature Sensor Circuit Failure

Chart 11/Code 29 Pre-Stroke Actuator Failure

Chart 12/Code 291 Pre-Stroke Position Sensor Circuit Failure

Chart 13/Code 292 Pre-Stroke Learning Failure

Chart 14/Code 293 Power Cut Relay Circuit Failure

Chart 15 System Diagnostic Procedure

Chart 16/Code 414 Boost Cut Magnetic Valve Circuit Failure

Chart 17 System Diagnostic Procedure

Chart 18/Code 423 Pre-Stroke Power Supply Circuit Failure

Chart 19 System Diagnostic Procedure

Chart 20 System Diagnostic Procedure

Chart 21/Code 413 Variable Swirl System Valve

Chart 22/Code 71 Barometric Pressure Sensor

1998-2001

— Automatic Transmission Relay Output Error

— Exhaust Brake Relay Error

— MFAM Signal Error

— Power Supply System Inspection

— Tachometer Output Error

— Pressure Control Valve (PCV) Relay Error

— Engine Hunting

— Startup Failure, No Initial Combustion

— Startup Failure, Initial Combustion No Start

— Startup Failure, Starts But Won’t Rev

— Excessive White Or Blue Smoke

— Excessive Black Smoke

— Lack Of Power

— Surging, Hesitation

— Engine Stalls

— Engine Does Not Stop

— Idle Control Error

— High Idle Engine Speed

Code P14 Pump Position (G) Sensor Error

Code P15 Crankshaft Position (NE) Sensor

Code P16 Main Relay System Error

Code P22 Atmospheric Temperature Sensor Error

Code P23 Water Temperature (THW) Sensor Error

Code P24 Accelerator Sensor Error 1 & 2

Code P32 Boost Pressure Sensor High Boost Pressure Abnormal

Code P34 Adjusted Data Record, No History Recorded

Code P35 Analog Digital Conversion, CPU Monitoring IC & Charging Circuit Errors

Code P42 High Boost Pressure Abnormal

Code P65 Low Boost Pressure Abnormal

Code P71 Atmospheric Pressure Sensor Error

Code P115 Common Rail Pressure Sensor Output Fixed

Code P118 Common Rail Pressure Abnormal, 1st & 2nd Stage

Code P151 Common Rail Pressure Abnormal, Pump Over Pressure

Code P158 Two Way Valve (TWV) Driving System Error

Code P159 Two Way Valve (TWV) Driving System Error

Code P211 Fuel Temperature (THF) Sensor Error

Code P217 PCV1 or PCV2 Power Shortage

Code P218 PCV1 or PCV2 Power Shortage

Code P226 Injection Pump Pressure Supply Or Pressure Limiter Activation

Code P227 Injection Pump Pressure Supply

Code P245 Abnormal Common Rail Pressure, PC Sensor System

Code P247 Pressure Control Valve (PCV1 Or PCV2) Disconnected Or Shorted To Ground

Code P248 Pressure Control Valve (PCV1 Or PCV2) Disconnected Or Shorted To Ground

Code P261 Cylinder Flow Dumper Activated

Code P262 Cylinder Flow Dumper Activated

Code P263 Cylinder Flow Dumper Activated

Code P264 Cylinder Flow Dumper Activated

Code P265 Cylinder Flow Dumper Activated

Code P266 Cylinder Flow Dumper Activated

Code P271 Two Way Valve (TWV) Side Disconnected

Code P272 Two Way Valve (TWV) Side Disconnected

Code P273 Two Way Valve (TWV) Side Disconnected

Code P274 Two Way Valve (TWV) Side Disconnected

Code P275 Two Way Valve (TWV) Side Disconnected

Code P276 Two Way Valve (TWV) Side Disconnected

Code P421 Pressure Control Valve (PCV) Relay System Error

Code P543 Overrun Judgement

Clearing Diagnostic Trouble Codes

To clear the DTCs from the ECM memory, either to determine if the malfunction will occur again or because repair has been completed, the memory clear switch (White connector) must be disconnected for at least one second, with engine control switch On, Fig. 1.