Section 40 (Engine Controls - Tests W/Codes - 6.8L)
WARNING: This page is about a different variant/trim than selected.
- Introduction
- Self-Diagnostic System
- Quick Test
- Additional System Functions
- Notes
- Parameter Identification (PID)
- On-Board System Readiness (OSR) Test Mode
- Freeze Frame Data Mode
- Output Test Mode
- Failure Mode Effects Management (FMEM)
- Hardware Limited Operational Strategy (HLOS)
- Drive Cycles
- OBD-II Drive Cycle Description
- Vehicle Preparation For OBD-II Or Monitor Repair Verification Drive Cycle
- OBD-II Drive Cycle
- Comprehensive Component Monitor Repair Verification Drive Cycle
- EGR Monitor Repair Verification Drive Cycle
- EVAP Running Loss System Repair Verification Drive Cycle
- Catalyst Monitor Repair Verification Drive Cycle
- Fuel Monitor Or HO2S Monitor Repair Verification Drive Cycle
- Misfire Monitor Repair Verification Drive Cycle
- Secondary Air Monitor Repair Verification Drive Cycle
- Summary
- Diagnostic Trouble Code (DTC) Reference Chart
- Circuit Tests
- Notes
- How To Use Circuit Tests
- Circuit Test A - No Start/Vehicle Will Not Start
- Circuit Test B - EEC-V Power Relay
- Circuit Test C - Reference Voltage
- Circuit Test DA - Temperature Sensor Test (IAT & ECT)
- Circuit Test Db - Engine Fuel Temperature (Eft) Sensor
- Circuit Test Dc - Mass Airflow (MAF) Sensor
- Circuit Test Dd - Fuel Rail Pressure (FRP) Sensor
- Circuit Test Dg - Knock Sensor (KS)
- Circuit Test DH - Throttle Position (TP) Sensor
- Circuit Test DL - Cylinder Head Temperature (CHT) Sensor
- Circuit Test DP - Vehicle Speed Sensor (VSS)
- Circuit Test Dr - Camshaft Position (CMP) Sensor
- Circuit Test DS - Air Conditioning Pressure (ACP) Sensor
- Circuit Test FB - Power Take Off (PTO)
- Circuit Test FD - Brake Pedal Position (BPP) Switch
- Circuit Test Ff - Power Steering Pressure (PSP) Switch
- Circuit Test FG - Octane Adjust
- Circuit Test H - Fuel Control
- Circuit Test HC - Gasoline Fuel Delivery System
- Circuit Test Hd - Misfire Detection Monitor
- Circuit Test He - EGR System
- Circuit Test Hf - Catalyst Efficiency Monitor & Exhaust Systems
- Circuit Test Hg - PCV System
- Circuit Test HK - Variable Cam Timing (VCT)
- Circuit Test HM - Secondary Air Injection (Air) System
- Circuit Test HU - Air Intake System
- Circuit Test HX - Evaporative Emission (EVAP) Monitor & System
- Circuit Test JB - Secondary Ignition
- Circuit Test JD - Crankshaft Position (CKP) Sensor
- Circuit Test JF - Integrated Ignition Coil On Plug Failure
- Circuit Test JH - Tachometer Output Failure
- Circuit Test KA - Fuel Pump Relay
- Circuit Test Kc - Fuel Shutoff Valve Relay
- Circuit Test KE - Idle Air Control (IAC) Valve
- Circuit Test Km - Wot A/C Cut-Off (WAC)
- Circuit Test MB - Output Test Mode Not Functioning
- Circuit Test NB - Malfunction Indicator Light (Mil)
- Circuit Test NC - Ignition Diagnostic Monitor (IDM)
- Circuit Test ND - Engine Rpm/Vehicle Speed Limiter
- Circuit Test QA - Unable To Activate Self-Test/SCP Communication Error DTC Not Listed
- Circuit Test QB - Diagnostic Trouble Code P0603 Or P1605
- Circuit Test QC - OBD-II Monitor Testing Not Complete; Diagnostic Trouble Code P1000
- Circuit Test QD - Diagnostic Trouble Code P1260
- Circuit Test Ta - Park & Neutral Position (PNP) Switch, Clutch Pedal Position (CPP) Switch
- Circuit Test Tb - Transmission Control Switch (TCS)/ Transmission Control Indicator Lamp (TCIL)
- CIRCUIT TEST TG - 4x4 LOW (4x4L) RANGE
- Circuit Test Z - Intermittent