Section 1 (3.8L BCM Tests W/Codes)
WARNING: This page is about a different car, the 1989 Oldsmobile Toronado, 1989 Buick Riviera, and 1989 Buick Reatta. However, it is still accessible from the selected car via links, so may be relevant.
- Description
- Component Locations
- Operation
- Notes
- Cathode Ray Tube Controller
- Electronic Climate Control (ECC) (TORONADO)
- Self-Diagnostics
- Entering "Service Mode"
- Climate Control "Service Mode"
- System Selection
- Test Type Selection
- Test Selection
- Code Reset Or Clearing Selection
- Snapshot Selection
- IPC Segment Check
- Exiting "Service Mode"
- Data Displays
- Input Displays
- Output Displays
- Override Displays
- Trouble Code Display
- Trouble Codes
- Trouble Shooting Symptom Diagnosis
- Preliminary Procedures
- How To Use This Section
- Fuel System Pressure Test
- INTERMITTENTS
- Hard Start
- Stalls After Starting
- Hesitation, Sag Or Stumble
- Vehicle Surges
- Lack Of Power Or Sluggish
- Engine Backfires
- Rough, Unstable Or Incorrect Idle
- Engine Will Not Idle
- Poor Fuel Economy
- Engine Dieseling/Run-On
- Detonation/Spark Knock
- Excessive Exhaust Emission (Odors)
- Removal & Installation
- Self-Diagnostics
- Diagnostic Circuit Check
- Chart A-1, "Service Engine Soon" Light Inoperative
- Chart A-2, "Service Engine Soon" Light Won't Go Out
- Chart A-3, Engine Cranks But Will Not Run
- Chart A-5, Fuel System Electrical Test
- Chart A-7, Fuel Pressure Test
- Chart B-1, Restricted Exhaust System Check
- Chart C-2A, Injector Balance Test
- Chart C-2, Idle Air Control (IAC) Valve Check
- Chart C-3, Canister Purge Check
- Chart C-4F-1, C I Misfire At Idle
- Chart C-4F-2, C I Misfire Under Load
- Chart C-5, Electronic Spark Control (ESC) System Check
- Chart C-7, Exhaust Gas RECIRCULATION (EGR) Flow Check
- Chart C-8A, Torque Converter Clutch (TCC)
- Chart C-12A, Coolant Fan Check (Riviera & TORONADO)
- Chart C-12B, Coolant Fan Check (Riviera & TORONADO)
- Chart C-12C-A, Coolant Fan Check No High Speed Rear Fan (REATTA, Riviera & TORONADO)
- Chart C-12C-B, Coolant Fan Check No High Speed Front Fan (Riviera & TORONADO)
- Chart C-12D, Coolant Fan Check "On" At All Times (Riviera & TORONADO)
- Chart C-12A, Coolant Fan Check (REATTA)
- Chart C-12B, Coolant Fan Check (REATTA)
- Chart C-12C-B, Coolant Fan Check No High Speed Front Fan (REATTA)
- Chart C-12D, Coolant Fan Check "On" At All Times (REATTA)
- Self-Diagnostic System Check (REATTA & Riviera)
- Chart B-1, Cannot Enter Diagnostics (REATTA & Riviera)
- Chart B-2, CRTC Or Data Problem (REATTA & Riviera)
- Chart B-3, No Communication (REATTA & Riviera)
- Chart B-4, No Communication (REATTA & Riviera)
- Chart B-5, CRTC Problem (REATTA & Riviera)
- Chart B-6, No Communication To IPC With Only Radio Functions (REATTA & Riviera)
- Chart B-7, BCM Problem (REATTA & Riviera)
- Chart B-8, Loss Of Logic - 7 Volts (REATTA & Riviera)
- Chart C-1, CRT Problem (REATTA & Riviera)
- Chart C-2, No Picture (REATTA & Riviera)
- Chart C-3, No Switches Respond Or Beeper Problem (REATTA & Riviera)
- Chart C-4, Some Switches Do Not Respond (REATTA & Riviera)
- Chart C-5, Picture Rolls (REATTA & Riviera)
- Self-Diagnostic System Check (TORONADO CRT Equipped)
- Chart A, Loss Of IPC Display (TORONADO CRT Equipped)
- Chart A-1, Cps Check (TORONADO CRT Equipped)
- Chart B, Color CRT Blank With Ignition On (TORONADO CRT Equipped)
- Chart D-1, Serial Data Circuit Open (TORONADO CRT Equipped)
- Chart D-2, Grounded Serial Data Circuit (TORONADO CRT Equipped)
- Chart D-3, Serial Data Circuit Shorted (TORONADO CRT Equipped)
- Chart E, Color CRT Abnormalities (TORONADO CRT Equipped)
- Self-Diagnostic System Check (TORONADO ECC Equipped)
- Chart A, Loss Of IPC Display (TORONADO ECC Equipped)
- Chart A-1, Cps Check (TORONADO ECC Equipped)
- Chart B, Loss Of Serial Data (TORONADO ECC Equipped)
- Chart C, Loss Of ECC Communications (TORONADO ECC Equipped)
- Chart D, Loss Of Communication (TORONADO ECC Equipped)
- Chart D-1, Serial Data Circuit Open (TORONADO ECC Equipped)
- Chart D-2, Grounded Serial Data Circuit (TORONADO ECC Equipped)
- Chart D-3, Serial Data Circuit Short (TORONADO ECC Equipped)
- Code B110, Outside Temperature Sensor Circuit
- Code B111, A/C High Side Temperature Sensor Circuit
- Code B112, A/C Low Side Temperature Sensor Circuit
- Code B113, In-Car Temperature Sensor Circuit
- Code B115, Sun Load Sensor Circuit
- Code B119, Twilight Photocell Circuit
- Code B120, Twilight Delay Potentiometer (REATTA & Riviera)
- Code B120, Twilight Delay Pot Circuit (TORONADO)
- Code B120 & B122, Twilight Delay & Panel Dimming
- Code B121, Twilight Enable Switch Circuit (REATTA & Riviera)
- Code B122, Panel Dimming Potentiometer Circuit (REATTA & Riviera)
- Code B122, Panel Dimming Switch Pot Circuit
- Code B123, Panel Lamp Switch Circuit
- Code B124, Vehicle Speed Sensor (VSS) Circuit Problem
- Code B127, Gear Selector Switch Circuit (TORONADO)
- Code B132, Engine Oil Pressure Sensor Circuit Faulty
- Code B140, Phone System Fault
- Serial Data Circuit Multiple Intermittent Data Codes (TORONADO)
- Code B332, Loss Of Compass Data
- Code B334, Loss Of ECM Data
- Code B335, Loss Of ECC Or CRTC Serial Data
- Code B336, Loss Of IPC Serial Data
- Code B337, Loss Of HVAC Programmer Data
- Serial Data Circuit Multiple Intermittent Codes
- Code B410, Charging System Circuit Fault
- Code B411 Or B412 Battery Voltage Too High Or Too Low
- Code B420, Courtesy - Twilight Light Relay Circuits (Riviera & REATTA)
- Code B420, Courtesy Lamp Relay Circuits (Riviera & REATTA)
- Code B420, Twilight Relay Circuits (Optional On Riviera Only)
- Code B420, Hi/Lo Beam Relay Circuit (Riviera Only)
- Code B420, Hi/Lo Beam Relay Circuit (REATTA Only)
- Code B420, Retained Accessory Power Relay Circuit
- Code B420, Courtesy - Twilight Light Relay Circuits (TORONADO)
- Code B420, Twilight Light Relay Circuits (TORONADO)
- Code B440, Air Mix Valve (Door) Circuit Problem
- Code B446, B447 & B448 Refrigerant System Problem (1 Of 2)
- Code B446, B447 & B448 Refrigerant System Problem (2 Of 2)
- Code B449, High Side Temperature Too High
- Code B450, Coolant Temperature Too High
- Code B482, Anti-Lock Pressure Problem
- Code B552, BCM Keep Alive Memory Error
- Code C553, CRT Keep Alive Memory Error (REATTA & Riviera)
- Code B556, Odometer (Ee) Prom Error
- Code B660, Cruise Control Not Drive
- Code B663, Cruise Speed Difference Between Actual And Set, Is Too Large
- Code B664, Cruise - Acceleration Too High
- Code B667, Set/Coast Or Resume/ACCEL Circuit Shorted
- Code B671, Cruise Servo Position Sensor Circuit
- Code B672, Cruise Vent Solenoid Circuit Problem
- Code B673, Cruise Vacuum Solenoid Circuit Problem
- Code C553, CRT Keep Alive Memory Error (TORONADO)
- Code C710, CRTC Switching Circuit Problem (REATTA & Riviera)
- Code C710, CRTC Switching Circuit Problem
- "Driver Door Ajar" Message
- "Passenger Door Ajar" Message
- "Seat Belt" Telltale & Chime
- "Headlights Are On" Chime
- "Low Oil Pressure" Message & Telltale
- "Oil Level Is Low" Message
- "Fuel Level Is Low" Message
- "Washer Fluid Is Low" Message
- "OVERSPEED Alarm" Message
- "Key In Ignition" Warning Chime
- Flashing Coolant Gauge,"Hot" Telltale, "Engine Overheat" Message & Fast Chime
- "Park Brake On" Message
- "Brake Fluid Is Low" Message
- Antilock Telltale On
- Wiring Diagrams