Specifications

TABLE OF CONTENTS
1.0 INTRODUCTION .........................................................1
1.1 SYSTEM COVERAGE ...............................................1
1.2 SIX-STEP TROUBLESHOOTING PROCEDURE ..........................1
2.0 IDENTIFICATION OF SYSTEM .............................................1
3.0 SYSTEM DESCRIPTION AND FUNCTIONAL OPERATION ......................1
3.1 GENERAL DESCRIPTION ............................................1
3.2 FUNCTIONAL OPERATION ...........................................1
3.2.1 ECM ON-BOARD DIAGNOSTICS ..............................1
3.2.2 ECM OPERATING MODES ...................................2
3.2.3 MONITORED CIRCUITS......................................2
3.2.4 SKREEM OVERVIEW........................................2
3.2.5 SKREEM ON-BOARD DIAGNOSTICS...........................2
3.2.6 SKREEM OPERATION .......................................3
3.3 DIAGNOSTIC TROUBLE CODES ......................................3
3.3.1 HARD CODE ...............................................3
3.3.2 INTERMITTENT CODE.......................................3
3.3.3 ECM DIAGNOSTIC TROUBLE CODES..........................3
3.3.4 HANDLING NO TROUBLE CODE PROBLEMS ...................8
3.4 USING THE DRBIIIT .................................................8
3.4.1 DRBIIIT DOES NOT POWER UP...............................8
3.4.2 DISPLAY IS NOT VISIBLE ....................................8
4.0 DISCLAIMERS, SAFETY, WARNINGS .......................................8
4.1 DISCLAIMERS......................................................8
4.2 SAFETY ...........................................................8
4.2.1 TECHNICIAN SAFETY INFORMATION..........................8
4.2.2 VEHICLE PREPARATION FOR TESTING........................9
4.2.3 SERVICING SUB-ASSEMBLIES ...............................9
4.2.4 DRBIIIT SAFETY INFORMATION...............................9
4.3 WARNINGS AND CAUTIONS .........................................9
4.3.1 ROAD TEST WARNINGS .....................................9
4.3.2 VEHICLE DAMAGE CAUTIONS ...............................9
5.0 REQUIRED TOOLS AND EQUIPMENT ......................................9
6.0 GLOSSARY OF TERMS..................................................10
7.0 DIAGNOSTIC INFORMATION AND PROCEDURES ...........................11
COMMUNICATION
*NO RESPONSE FROM ENGINE CONTROL MODULE ........................12
*NO RESPONSE FROM SENTRY KEY REMOTE ENTRY MODULE ..............14
DRIVEABILITY - DIESEL
P-1105 ATMOSPHERIC PRESSURE SENSOR PLAUSIBILITY WITH BOOST
PRESSURE SENSOR....................................................16
P1105-ATMOSPHERIC PRESSURE SENSOR SIGNAL VOLTAGE TOO HIGH ......16
P1105-ATMOSPHERIC PRESSURE SENSOR SIGNAL VOLTAGE TOO LOW ......16
P1617- ECM READ/WRITE ERROR ........................................16
i