2.8L CEC Tests W/Codes

Removal & Installation
- Electronic Control Module (ECM) R & I
- Prom R & I
  - Removal
  - Installation
- Oxygen Sensor R & I
- Vacuum Sensor R & I
- Coolant Temperature Sensor R & I
- Vehicle Speed Sensor (VSS) R & I
Diagnosis & Testing
Recalling Trouble Codes
Entering Diagnostic Mode
Clearing Trouble Codes
Exiting Diagnostic Mode
Failure Code Determination
Diagnostic Procedure
System Checks
- Diagnostic Circuit Check
- Driver Complaint Chart
- System Performance Check
Diagnostic Tools Required
Trouble Code Id
Diagnostic Circuit Check
Driver Comment Checks
- Engine Performance Problem - Odor, Surge, Fuel Economy Or Emission Problem
- All Other Complaints
System Performance Check
Dwell Fixed Under 10°
Dwell Fixed Between 10-50°
Dwell Fixed Over 50°
TPS Enrichment Check
No "Check Engine" Light
Won't Flash Code 12 - Remote Lamp Driver In Harness
Electric Diverter Valve Circuit Check
- Electric Diverter Valve (EDV) Check (Exc Models W/ Mechanical Divert Valve)
TCC Electrical Diagnosis
EFE (Electrically Heated) Check
Divert Valve Check
Est Performance Check
Engine Cranks, But Won't Run
- Engine Cranks, But Won't Run (W/ Integral Coil)
- Engine Cranks, But Will Not Run (With Remote Coil)
Code 12 - No Reference To ECM
Code 13 - O2 Sensor CKT
Code 14 - Shorted Cts Circuit
Code 15 - Open Cts Circuit
Code 21 - TPS Circuit
Code 23 - M/C Solenoid Circuit
Code 24 - VSS Circuit
Code 34 - Vacuum Sensor Circuit
Code 41 - No Specific Reference
Code 42 - Est/Est Bypass
Code 44 - Lean O2 Indication
Code 45 - Rich O2 Indication
Code 51 - Faulty Prom
Code 55 - Faulty ECM Signals
Component Location
Wiring Diagrams