Engine Controls - Tests W/Codes
- Introduction
- Model Identification
- Self-Diagnostic System
- System Diagnosis
- Hard Failures
- Intermittent Failures
- Diagnostic Procedure
- Entering On-Board Diagnostics
- Clearing Trouble Codes
- Fault Code Table
- DRB-II Test Functions
- DRB-II Problems & Error Messages
- Emission Maintenance Reminder (EMR) Memory Test
- Emission Maintenance Reminder (EMR) Light Reset Procedure
- Emission Maintenance Reminder (EMR) Mileage Transfer
- Theft Alarm Test CHEROKEE
- Summary
- Code Charts
- Notes
- NS-1A: Checking For Fault Messages & Spark
- NS-2A: Checking Fuel Delivery System
- NS-3A: Checking Spark Delivery & Engine Mechanical Systems
- NS-4A: Checking Low Fuel Pressure Condition
- NS-4B: Checking For High Fuel Pressure Problem
- NS-5A: Checking For Defective Coil Or Control Circuit
- NS-6A: Repairing No Sync Pick-Up Signal Fault
- NS-6B: Checking Distributor Sync Circuits
- NS-7A: Checking Fuel Pump Circuit
- NS-7B: Checking Fuel Pump Ground Circuit
- NS-7C: Checking Fuel Pump Power Circuit
- NS-8A: Repairing No Response Condition
- NS-8B: Repairing Loss Of Battery Power At Engine Controller
- NS-8C: Repairing Loss Of Battery Power At Engine Controller
- NS-8D: Repairing Loss Of Battery Power At Engine Controller
- NS-8E: Repairing Loss Of Battery Power At Engine Controller
- NS-9A: Repairing No Reference Signal During Cranking Fault
- NS-9B: Checking Distributor Reference Circuit
- NS-10A: Repairing Auto Shutdown Relay Control Circuit Fault
- NS-11A: Repairing No ASD Relay Voltage Sense At Controller
- NS-12A: Checking Idle Speed Motor Operation
- NS-12B: Checking Idle Speed Motor Operation
- NS-12C: Checking Idle Speed Motor Operation
- NS-12D: Checking Idle Speed Motor Operation
- NS-12E: Checking Idle Speed Motor Operation
- NS-13A: Performing No Fault Code Mechanical Test
- Dr-1A: Checking System For Faults
- Dr-2A: Repairing Slow Change In Idle Map Signal
- Dr-3A: Repairing No Change In Map From Start To Run
- Dr-4A: Repairing Map Voltage Too Low
- Dr-5A: Repairing Map Voltage Too High
- Dr-6A: Repairing No Vehicle Speed Signal
- Dr-7A: Repairing O2 Signal Stays At Center
- Dr-8A: Repairing O2 Signal Shorted To Voltage
- Dr-9A: Repairing Coolant Sensor Voltage Too High
- Dr-10A: Repairing Coolant Sensor Voltage Too Low
- Dr-11A: Repairing Charge Temperature Sensor Voltage High
- Dr-12A: Repairing Charge Temperature Sensor Voltage Low
- Dr-13A: Repairing Throttle Position Sensor Voltage High
- Dr-14A: Repairing Throttle Position Sensor Voltage Low
- Dr-15A: Repairing Automatic Idle Speed Motor Circuits
- Dr-16A: Repairing Injector #1 Control Circuit
- Dr-17A: Repairing Injector #2 Control Circuit
- Dr-18A: Repairing Injector #3 Control Circuit
- Dr-19A: Repairing Injector #4 Control Circuit
- Dr-20A: Repairing Injector #5 Control Circuit
- Dr-21A: Repairing Injector #6 Control Circuit
- Dr-22A: Repairing A/C Clutch Relay Circuit
- Dr-23A: Repairing Radiator Fan Relay Circuit
- Dr-24A: Repairing No ASD Relay Voltage Sense At Controller
- Dr-25A: Repairing Controller Failure EMR Miles Not Stored Or EEPROM Write Denied
- Dr-26A: Checking Secondary Ignition & Timing
- Dr-27A: Checking Fuel Pressure
- Dr-27B: Checking Fuel Pressure
- Dr-28A: Checking Coolant & TPS Calibrations
- Dr-29A: Checking Map Sensor Calibration
- Dr-30A: Checking Oxygen Sensor Switching
- Dr-30B: Checking Oxygen Sensor Locked Lean
- Dr-31A: Checking Idle Speed Motor Operation
- Dr-31B: Checking Idle Speed Motor Operation
- Dr-31C: Checking Idle Speed Motor Operation
- Dr-31D: Checking Idle Speed Motor Operation
- Dr-31E: Checking Idle Speed Motor Operation
- Dr-32A: Checking Park/Neutral Switch Input
- Dr-33A: Checking Engine Controller Grounds & Power Circuits
- Dr-34A: Performing No Fault Code Mechanical Test
- Dr-35A: Intermittent Test For Solenoids Or Relays
- Dr-36A: Intermittent Test For Sensors
- Dr-36B: Intermittent Test For Map Sensor Signal Change
- Dr-37A: Intermittent Test For Automatic Idle Speed Motor
- VER-1: Verification Procedure VER-1
- VER-2: Verification Procedure VER-2
- VER-3: Verification Procedure VER-3