Section 4 (Engine Controls - Tests W/Codes)
WARNING: This page is about a different car, the 1990 Cadillac Seville and 1990 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Self-Diagnostic System
- Manual Operation Of Self-Diagnostics
- Specific Test Type Availability
- BCM Specific Data (BD) Tests
- BD20: Commanded Blower Voltage
- BD21: Coolant Temperature
- BD22: Commanded Air-Mix Door
- BD23: Actual Air-Mix Door Position
- BD24: Air Delivery Mode
- BD25: In-Car Temperature
- BD26: Actual Outside Air Temperature
- BD27: High Side Temperature Condenser Out
- BD28: Low Side Temperature Evaporator In
- BD32: Sun Load Temperature
- BD40: Actual Fuel Level
- BD41: PRND321 Sensor
- BD42: Dimming Pot
- BD43: Twilight Delay Pot
- BD44: Twilight Photocell
- BD50: Battery Charge
- BD51: Alternator Field
- BD60: Vehicle Speed
- BD61: Engine Speed
- BD90: Option 1 EEPROM
- BD91: Option 2 EEPROM
- BD98: Ignition Cycle Counter
- BD99: BCM Prom Id
- BCM Specific Input (Bi) Tests
- BI01: Courtesy Light Panel Switch
- BI02: Parking Light Switch
- BI03: Driver Front Door Ajar Switch
- BI04: Passenger's Rear Door Ajar Switch
- BI05: Door Jamb Switch
- BI06: Door Handle Switch
- BI07: Trunk Open Switch
- BI08: A/C Low Refrigerant Pressure Switch
- BI09: Windshield Washer Fluid Level Switch
- BI30: Temp/Time Switch
- BI51: Alternator Feedback
- BCM Specific Output (BO) Tests
- BCM Specific Override (BS) Tests
- ECM Specific Data (Ed) Tests
- ED01: Throttle Position Sensor (TPS)
- ED02: Manifold Air Pressure
- ED03: Computed Barometric Pressure
- ED04: Coolant Temperature
- ED05: Manifold Air Temperature (MAT) Sensor
- ED08: Spark Advance
- ED10: Battery State Of Charge
- ED11: Engine Speed
- ED12: Vehicle Speed
- ED30: Left Injector Pulse Width
- ED31: Right Injector Pulse Width
- ED32: Left Oxygen Sensor Voltage
- ED33: Right Oxygen Sensor Voltage
- ED34: Left Oxygen Sensor Cross Counts
- ED35: Right Oxygen Sensor Cross Counts
- ED36: Left Fuel Integrator
- ED37: Right Fuel Integrator
- ED38: Left Block Learn Display
- ED39: Right Block Learn Display
- ED70: Cruise Control Feedback
- ED71: 3rd & 4th Gear Status
- ED72: P/N Status
- ED98: Ignition Cycles
- ED99: ECM Programmable Read Only Memory (PROM) ID Code
- ECM Specific Input (EI) Tests
- EI70: Cruise Brake Switch
- EI71: Viscous Converter Clutch (VCC) Brake Switch
- EI72: Throttle Switch Display
- EI79: 3rd Gear Pressure Switch
- EI82: Cruise ON/OFF Switch
- EI83: Cruise SET/COAST Switch
- EI84: Cruise RESUME/ACCEL Switch
- EI85: Power Steering Switch
- ECM Specific Output (EO) Tests
- EO00: No Outputs
- EO01: Canister Purge
- EO02: Viscous Converter Clutch (VCC)
- EO03: EGR Solenoid
- EO04: Air Switch
- EO05: Air Divert
- EO06: Idle Speed Control (ISC) Motor
- EO07: Cruise Vent
- EO08: Cruise Vacuum
- EO09: Shift A
- EO99: Cycle All
- ECM Specific Override Tests
- ES00: No Overrides
- ES01: Viscous Converter Clutch (VCC) Solenoid
- ES02: EGR Solenoid
- ES03: Idle Speed Control (ISC) Motor
- ES04: Injector Cutout (Power Balance)
- ES05: Fuel Pump Relay
- ES06: Air System Electric Switching Valve (ESV)
- ES07: Cruise Servo
- ES08: Cooling Fan
- ES09: Fixed Spark
- ES10: Injector Flow
- ES11: Transaxle Shift
- BCM Specific Data (BD) Tests
- IPC System Self-Diagnostics
- Self-Diagnostic System Diagnostic Charts
- Notes
- Self-Diagnostic System Check
- Chart A1: Inoperative "Service Engine Soon" Light
- Chart A2: "Service Engine Soon" Light On - No Codes Present
- Chart B1: Odometer Power/Ground Problem
- Chart B2: BCM-To-IPC Communication Problem
- Chart B3: CCDIC Problem
- Chart B4: BCM-To-Cps Power/Ground Problem
- Chart B5: Vacuum Fluorescent Power Supply Problem
- Chart B6: IPCTO-Cps Power/Ground Problem
- Chart B7: BCM-To-Cps Wake-Up Signal Problem
- Chart B8: Power Loss From Cps To Other Components
- Chart C1 (Except PFI) - CCDIC Symptom Diagnosis
- Chart C1 (PFI) - ECM Replacement Check
- Chart C2 - CCDIC Completely Blank
- Chart C3 - CCDIC Display Reads System Problem
- Chart C4 - CCDIC Display Reads System Problem
- PFI System Diagnostic Charts
- Notes
- PFI System Check
- PFI Chart A1 - "Service Engine Soon" Light Inoperative
- PFI Chart A2 - "Service Engine Soon" Light On - No Codes
- PFI Chart A3 - No Start Or Stall After Start
- PFI Chart A4A - Static Fuel Pressure Diagnosis
- PFI Chart A4B - Dynamic Fuel Pressure Check
- PFI Chart A5A - Injector System Diagnosis
- PFI Chart A5B - Injector System Diagnosis
- PFI Chart A5C - Injector System Diagnosis
- PFI Chart A6 - Right Oxygen Sensor Not Ready
- PFI Chart A7 - Left O2 Sensor Not Ready
- PFI Chart A8 - Right O2 Sensor Lean Exhaust Signal
- PFI Chart A9 - Left O2 Sensor Lean Exhaust Signal
- PFI Chart A10 - Right O2 Sensor Rich Exhaust Signal
- PFI Chart A11 - Left O2 Sensor Rich Exhaust Signal
- PFI Chart A12 - Right Oxygen Sensor Diagnosis
- PFI Chart A13 - Left Oxygen Sensor Diagnosis
- ECM Trouble Code Charts
- Notes
- ECM Chart A - Multiple Codes Stored Hard
- ECM Code EO12: No Distributor (Tach) Signal
- ECM Code EO13: Right Oxygen Sensor Not Ready
- ECM Code EO14: Shorted Coolant Sensor Circuit
- ECM Code EO15: Open Coolant Sensor Circuit
- ECM Code EO16: Alternator Voltage Out Of Range
- ECM Code EO17: Left Oxygen Sensor Not Ready
- ECM Code EO19: Shorted Fuel Pump Circuit
- ECM Code EO20: Open Fuel Pump Circuit
- ECM Code EO20: Fuel Pump Fuse Blown
- ECM Code EO21, Shorted TPS Circuit
- ECM Code EO22: Open TPS Circuit
- ECM Code EO23, Est Circuit Problem
- ECM Code EO24: Speed Sensor Circuit Problem
- ECM Code EO26: Shorted Throttle Switch Circuit
- ECM Code EO27: Open Throttle Switch Circuit
- ECM Code EO28: Open 3RD Or 4TH Gear Circuit
- ECM Code EO30: Idle Speed Control Circuit Problem
- ECM Code EO31: Shorted Map Sensor Circuit
- ECM Code EO32: Open Map Sensor Circuit
- ECM Code EO34, Map Signal Too High
- ECM Code EO37: Shorted Mat Sensor Circuit
- ECM Code EO38: Open Mat Sensor Circuit
- ECM Code EO39: VCC Engagement Problem (1 Of 2)
- ECM Code EO39: VCC Engagement Problem (2 Of 2)
- ECM Code EO40: Open PSPS Circuit
- ECM Code EO41: No Cam Sensor Signal
- ECM Code EO42: Left O2 Sensor Lean Signal
- ECM Code EO43: Left O2 Sensor Rich Signal
- ECM Code EO44: Right O2 Sensor Lean Signal
- ECM Code EO45: Right O2 Sensor Rich Signal
- ECM Code EO46: Right To Left Bank Fueling Imbalance
- ECM Code EO47: BCM-To-ECM Data Problem
- ECM Code EO48, EGR System Fault (1 Of 2)
- ECM CODE EO48, EGR SYSTEM FAULT (2 of 2)
- ECM Code EO49, Air System Fault
- ECM Code EO51: Mem-Cal Error
- ECM Code EO52, ECM Memory Reset
- ECM Code EO53: Distributor Signal Interrupt
- ECM Code EO55, TPS Out Of Adjustment
- ECM Code EO58: Pass Key Control Problem
- ECM Code EO60: Cruise Control With Trans Not In Drive
- ECM Code EO61: Cruise Control Vent Solenoid Circuit
- ECM Code EO62: Cruise Control Vacuum Solenoid Circuit
- ECM Code EO63: Vehicle Speed/Set Speed Difference Too High
- ECM Code EO64, Acceleration Too High
- ECM Code EO65: Cruise Control Servo Position Sensor Failure
- ECM Code EO66: Engine Rpm Too High With Cruise Engaged
- ECM Code EO67: Set/Coast Or Resume/ACCEL Switch Shorted
- ECM Code EO68: Cruise Control Command Problem
- ECM Code EO74: Mat Sensor Signal Interrupt
- ECM Code EO75: VSS Signal Interrupt
- ECM Code EO85: Throttle Body Service Required
- ECM Code EO90: VCC Brake Switch Input Problem
- ECM Code EO91: Park/Neutral Switch Problem
- ECM Code EO96: Torque Converter Overstress
- ECM Code EO97: Park/Neutral-Drive/Reverse At High Throttle
- ECM Code EO98: Park/Neutral To Drive/Reverse While Outside Of
- ECM Code EO99: Cruise Servo Applied Not In Cruise
- BCM Trouble Code Charts
- Notes
- BCM Code B110: Outside Air Temp Sensor Circuit
- BCM Code B111: A/C High Side Temp Sensor Circuit
- BCM Code B112: A/C Low Side Temp Sensor Circuit
- BCM Code B113: In-Car Temp Sensor Circuit
- BCM Code B115: SUNLOAD Temp Sensor
- BCM Code B119: Twilight Photocell Circuit
- BCM Code B120: Twilight Delay Pot Circuit
- BCM Codes B120 & B122: Twilight Delay & Panel Dimming
- BCM Code B121, Twilight Enable Switch
- BCM Code B122: Panel Light Dimming Pot Circuit
- BCM Code B123: Courtesy Light Switch
- BCM Code B124: Vehicle Speed Sensor Circuit
- BCM Code B127: PRND321 Sensor
- Multiple Intermittent Codes
- BCM Code B333: Loss Of Sir (DERM) Data
- BCM Code B334: Loss Of ECM Data
- BCM Code B335: Loss Of CCDIC Data
- BCM Code B336: Loss Of IPC Data
- BCM Code B337: Loss Of A/C Heater Programmer Data
- BCM Code B410: Charging System Circuit
- BCM Code B411 & 412: Battery Voltage Low Or High
- BCM Code B420, Relay Circuits
- BCM Code B420: Courtesy Light Relay Circuit
- BCM Code B420: Twilight Relays Circuit
- BCM Code B420: High/Low Beam Relays Circuit
- BCM Code B420: Retained Accessory Power Relays Circuit
- BCM Code B440: A/C Heater Air Mix Door Circuit Problem
- BCM Codes B446 & B447: Low Refrigerant Pressure
- BCM Code B448: Low Refrigerant Pressure
- BCM Code B449: A/C Heater High Side Temperature Too High
- BCM Code B450: Coolant High Temperature (A/C)
- BCM Code B552: Keep Alive Memory Error
- BCM Code B556, Odometer EEPROM Error
- BCM Location
- ECM Location
- Summary