Section 4 (Engine Controls - Tests W/Codes)
WARNING: This page is about a different car, the 1990 Cadillac Fleetwood and 1990 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Self-Diagnostic System
- Self-Diagnostics
- Diagnostic Testing
- Diagnostic Charts
- Chart C-1: Display Panel Diagnosis
- Chart C-1: ECM Replacement Check
- PFI System Check
- PFI Chart A-1: Service Engine Soon Telltale Inoperative
- PFI Chart A-2: Service Engine Soon Telltale On - No Codes Present
- PFI Chart A-3: No Start Or Stall After Start
- PFI Chart A-4-A: Static Fuel Pressure Diagnosis
- PFI Chart A-4-B: Dynamic Fuel Pressure Check
- PFI Chart A-5-A: Injector System Diagnosis
- PFI Chart A-5-B: Injector System Diagnosis
- PFI Chart A-5-C: Injector System Diagnosis
- PFI Chart A-6: Oxygen Sensor Not Ready
- PFI Chart A-8: O2 Sensor Lean Exhaust Diagnosis
- PFI Chart A-10: O2 Sensor Rich Exhaust Diagnosis
- PFI Chart A-12: Oxygen Sensor (O2) Diagnosis
- ECM Code Charts
- Multiple Trouble Codes (Stored Hard)
- Code E12: No Distributor (Tach) Signal
- Code E13: Oxygen Sensor Not Ready
- Code E14: Shorted Coolant Sensor Circuit
- Code E15: Open Coolant Sensor Circuit
- Code E16: Generator Voltage Out Of Range
- Code E19: Shorted Fuel Pump Circuit
- Code E20: Open Fuel Pump Circuit
- Code E20: Fuel Fuse Blown
- Code E21: Shorted TPS Sensor Circuit
- Code E22: Open TPS Sensor Circuit
- Code E23: Est Circuit Problem
- Code E23: Est Circuit Problem (2 Of 2)
- Code E24: Vehicle Speed Sensor (VSS) Circuit Problem
- Code E26: Shorted Throttle Switch Circuit
- Code E27: Open Throttle Switch Circuit
- Code E28: Open 3RD Or 4TH Gear Circuit
- Code E30: Idle Speed Control Circuit Problem
- Code E31: Shorted Map Sensor Circuit
- Code E32: Open Map Sensor Circuit
- Code E34: Map Signal Too High
- Code E37: Shorted Mat Sensor Circuit
- Code E38: Open Mat Sensor Circuit
- Code E39: VCC Engagement Problem
- Code E39: VCC Engagement Problem (2 Of 2)
- Code E40, Open Power Steering Pressure Circuit
- Code E41: No Cam Sensor Signal
- Code E44: Lean Exhaust Signal
- Code E45, Rich Exhaust Signal
- Code E47: BCM To ECM Data
- Code E48: EGR System Fault
- Code E48: EGR System Fault (2 Of 2)
- Code E49: Air Management System Fault
- Code E52: ECM Memory Reset
- Code E53: Distributor Signal Interrupt
- Code E55: TPS Out Of Adjustment
- Code E58: Pass Key Fuel Enable Problem
- Code E60: Cruise Control Engaged With Trans In Park Or Neutral
- Code E61: Cruise Control Vent Solenoid Circuit
- Code E62: Cruise Control Vacuum Solenoid Circuit
- Code E63: Cruise Control Circuit Vehicle Speed & Set Speed Differential Exceeded
- Code E64: Acceleration Too High With Cruise Engaged
- Code E65: Cruise Control Servo Position Sensor Failure
- Code E66: Engine Rpm Too High With Cruise Engaged
- Code E67: Set/Coast Or Resume/ACCEL Circuits Shorted
- Code E68: Cruise Control Command Problem
- ECM Code E74: Mat Sensor Signal Interrupt
- ECM Code E75: VSS Signal Interrupt
- ECM Code E85: Throttle Body Service Required
- ECM Code E90: VCC Brake Switch Input Problem
- ECM Code E91: Park/Neutral Switch Problem
- ECM Code E92: Heated Windshield Request Problem
- ECM Code E96: Torque Converter Overstress
- ECM Code E97: Park/Neutral To Drive/Reverse At High Throttle Angle
- ECM Code E98: Park/Neutral To Drive/Reverse While Outside Of ISC Control Range
- ECM Code E99: Cruise Servo Applied Not In Cruise
- BCM Code Charts
- BCM Code F10: Outside Air Temp Sensor Circuit
- BCM Code F11: A/C High Side Temp Sensor Circuit
- BCM Code F12: A/C Low Side Temp Sensor Circuit
- BCM Code F13: In-Car Temperature Sensor
- BCM Codes F30 &/Or F31: Display Panels To BCM Data
- BCM Code F32: BCM-To-ECM Data Problem
- BCM Code F40: Air-Mix Door Problem
- BCM Codes F46, F47 &/Or F48: Refrigerant SYS Problems