Repair manual
Buick Riviera VII Repair Manual
Step-by-step repair and maintenance instructions for the Buick Riviera VII (1985–1993): removal, installation, adjustment, diagnostics and parameter checks with illustrations.
66sections
485articles
ENManual language
- DIAGNOSIS & TESTING
- MODEL IDENTIFICATION
- DESCRIPTION
- BASIC DIAGNOSTIC PROCEDURE
- DIAGNOSTIC MATERIALS
- DIAGNOSTIC CHARTS
- DIAGNOSTIC AIDS
- FIELD SERVICE MODE CHECK (FUEL INJECTED MODELS)
- SPECIAL DIAGNOSTIC TOOLS
- SCAN TESTER USAGE
- SCAN TESTER - TEST DATA PARAMETERS
- ECM TERMINAL ID (3.3L VIN N, "A" BODY)
- ECM TERMINAL ID (3.3L VIN N, "N" BODY)
- ECM TERMINAL ID (3.3L VIN C, "C" & "H" BODIES)
- DIAGNOSTIC CIRCUIT CHECK
- CHART A3 - ENGINE CRANKS BUT WON'T RUN
- 3.3L (2 OF 2)
- CHART A5 - FUEL SYSTEM ELECT. TEST (3.3L, "A" BODY)
- CHART A5 - FUEL SYSTEM ELECT. TEST
- Additional Checks
- CHART A5 - FUEL SYSTEM ELECTRICAL TEST
- CHART A7 - FUEL PRESSURE TEST (3.3L "A" BODY)
- FUEL PRESSURE TEST (2 OF 3) (3.3L "A" BODY)
- Installation
- Removal
- CHART A7 - FUEL PRESSURE TEST (3.3L "N" BODY)
- CHART A7 - FUEL PRESSURE TEST (3.8L "C" & "H" BODIES)
- CHART B1 - RESTRICTED EXHAUST SYSTEM CHECK
- CHECK AT O2 SENSOR
- Diagnosis
- CHART C2A - INJECTOR BALANCE TEST
- CHART C2B - IDLE AIR CONTROL (3.3L)
- CHART C2B - IDLE AIR CONTROL (3.8L)
- CHART C3 - CANISTER PURGE CHECK
- CHART C4H1 - C3I MISFIRE AT IDLE (3.3L)
- CHART C4H2 - C3I MISFIRE UNDER LOAD (3.3L)
- CHART C4F1 - C3I MISFIRE AT IDLE (3.8L "C" & "H" BODIES)
- CHART C4F2 - C3I MISFIRE UNDER LOAD (3.8L "C" & "H" BODIES)
- CHART C5 - ELECTRONIC SPARK CONTROL (ESC)
- CHART C7 - EXHAUST GAS RECIRCULATION (3.8L)
- CHART C8 - TORQUE CONVERTER CLUTCH
- CHART C8B - TORQUE CONVERTER CLUTCH
- 3.3L "A" BODY WITH 440-T4 TRANSMISSION (2 OF 2)
- CHART C8A - TORQUE CONVERTER CLUTCH
- TCC - 3.8L WITH 440-T4 TRANSMISSION (2 OF 2)
- CHART C10 - A/C CLUTCH CONTROL
- 3.3L "A" BODY (2 OF 2)
- CHART C10 - A/C CLUTCH CONTROL (3.3L "N" BODY)
- CHART C10A - A/C CLUTCH CONTROL
- 3.8L "C" & "H" BODIES (2 OF 2)
- CHART C12A - COOLING FAN FUNCTIONAL CHECK (3.3L "A" BODY)
- CHART C12B - NO COOLING FAN(S) (3.3L "A" BODY)
- CHART C12C - COOLING FAN(S) ALWAYS ON (3.3L "A" BODY)
- CHART C12A - COOLING FAN FUNCTIONAL CHECK (3.3L "N" BODY)
- CHART C12B - NO COOLING FAN (3.3L "N" BODY)
- CHART C12C - COOLING FAN ALWAYS ON (3.3L "N" BODY)
- CHART C12A - COOLING FAN FUNCTIONAL CHECK (3.8L)
- CHART C12B - COOLING FAN ALWAYS ON (3.8L)
- CHART C12C - NO LOW SPEED COOLING FAN (3.8L)
- CHART C12D - NO HIGH SPEED COOLING FAN (3.8L)
- MODEL/BODY IDENTIFICATION
- BASIC DIAGNOSTIC PROCEDURE
- READING TROUBLE CODES
- STANDARDIZED ECM TROUBLE CODE DEFINITIONS
- TROUBLE CODE DETERMINATION (HARD OR INTERMITTENT)
- CLEARING TROUBLE CODES
- DIAGNOSTIC MATERIALS
- Diagnostic Charts
- Diagnostic Aids
- FIELD SERVICE MODE CHECK
- SPECIAL DIAGNOSTIC TOOLS
- SCAN TESTER USAGE
- "NON-SCAN" VERSION
- "SCAN" VERSION
- CHART A1: NO "SERVICE ENGINE SOON" (SES) LIGHT
- Diagnostic Aids - Engine Runs Okay
- CHART A2: WON'T FLASH CODE 12, "SES" LIGHT ON
- CHART A3: ENGINE CRANKS BUT WON'T RUN (3.3L)
- CHART A3: ENGINE CRANKS BUT WON'T RUN (3.3L, 2 OF 2)
- CHART A3: ENGINE CRANKS BUT WON'T RUN (1 OF 4) (3.8L)
- CHART A3: ENGINE CRANKS BUT WON'T RUN (2 OF 4) (3.8L)
- CHART A3: ENGINE CRANKS BUT WON'T RUN (3 OF 4) (3.8L)
- CHART A3: ENGINE CRANKS BUT WON'T RUN (4 OF 4) (3.8L)
- CHART A5: FUEL SYSTEM ELECTRICAL TEST (3.3L A BODY)
- CHART A5: FUEL SYSTEM ELECTRICAL TEST (1 OF 2) (3.3L N BODY)
- CHART A5: FUEL SYSTEM ELECTRICAL TEST (2 OF 2) (3.3L N BODY)
- Additional Checks
- CHART A5: FUEL SYSTEM ELECT TEST (1 OF 2, 3.8L W/STD CLUSTER)
- CHART A5: FUEL SYSTEM ELECT TEST (2 OF 2, 3.8L W/STD CLUSTER)
- CHART A5: FUEL SYS ELECT TEST (1 OF 2, 3.8L W/O STD CLUSTER)
- CHART A5: FUEL SYS ELECT TEST (2 OF 2, 3.8L W/O STD CLUSTER)
- CHART A7: FUEL PRESSURE TEST (1 OF 3) (3.3L A BODY)
- CHART A7: FUEL PRESSURE TEST (2 OF 3) (3.3L A BODY)
- Installation
- Removal
- CHART A7: FUEL PRESSURE TEST (2 OF 2) (3.3L N BODY)
- CHART A7: FUEL PRESSURE TEST (1 OF 2) (3.8L C/H BODY)
- CHART A7: FUEL PRESSURE TEST (2 OF 2) (3.8L C/H BODY)
- CODE 13: OPEN O2 SENSOR CIRCUIT
- CODE 14: CTS SIGNAL VOLTAGE LOW
- CODE 15: CTS SIGNAL VOLTAGE HIGH
- CODE 16: SYSTEM VOLTAGE HIGH
- CODE 21: TPS SIGNAL VOLTAGE HIGH
- CODE 22: TPS SIGNAL VOLTAGE LOW
- CODE 23: MAT SENSOR SIGNAL VOLTAGE HIGH (3.8L)
- CODE 24: VEHICLE SPEED SENSOR (VSS)
- CODE 25: MAT SENSOR SIGNAL VOLTAGE LOW (3.8L)
- CODE 26: TCC QUAD-DRIVER CKT (3.3L W/125-C TRANS)
- CODE 26: TCC QUAD-DRIVER CKT (3.3L A BODY W/440-T4 TRANS)
- CODE 26: QUAD-DRIVER CIRCUIT (1 OF 3) (3.8L)
- CODE 26: QUAD-DRIVER CIRCUIT (2 OF 3) (3.8L)
- CODE 26: QUAD-DRIVER CIRCUIT (3 OF 3) (3.8L)
- CODE 27 OR 28: GEAR SWITCH CKTS (3.3L W/125-C TRANS)
- CODE 28 OR 29: GEAR SWITCH CKTS (3.3L W/440-T4 TRANS)
- CODE 27/28 OR 29: GEAR SWITCH CIRCUITS (3.8L)
- CODE 31: PARK/NEUTRAL SWITCH CIRCUIT
- CODE 34: MASS AIRFLOW (MAF) SENSOR
- CODE 38: BRAKE SWITCH CIRCUIT (3.3L)
- CODE 38: BRAKE SWITCH CIRCUIT (3.8L)
- CODE 39: TCC CIRCUIT (3.3L W/125-C TRANS)
- CODE 39: TCC CIRCUIT (3.3L/3.8L W/440-T4 TRANS)
- CODE 41, CAM SENSOR CIRCUIT ("C" & "H" BODIES; 3.8L)
- All Updated Information
- Circuit Description
- Test Description
- CODE E041, CAM SENSOR CIRCUIT ("E" BODIES; 3.8L)
- CODE 42: EST IGNITION CIRCUIT
- CODE 43: ELECTRONIC SPARK CONTROL (ESC)
- CODE 44: LEAN EXHAUST INDICATION
- CODE 45: RICH EXHAUST INDICATOR
- CODE 46: POWER STEERING PRESSURE SWITCH (3.3L)
- CODE 46: POWER STEERING PRESSURE SWITCH (3.8L)
- CODE 48: MISFIRE DIAGNOSIS
- CODE 51: MEMCAL ERROR
- CODE 63/64 OR 65: EGR FLOW CHECK (3.8L)
- CODE 66: A/C PRESSURE SENSOR CKT (3.3L N BODY)
- CHART B1: RESTRICTED EXHAUST SYSTEM CHECK
- Check at O2 Sensor
- Diagnosis
- CHART C2A: INJECTOR BALANCE TEST
- CHART C2B: IDLE AIR CONTROL (3.3L)
- CHART C2B: IDLE AIR CONTROL (3.8L)
- CHART C3: CANISTER PURGE CHECK
- CHART C4H-1: C3I MISFIRE AT IDLE (3.3L)
- CHART C4H-2: C3I MISFIRE UNDER LOAD (3.3L)
- CHART C4F-1: C3I MISFIRE AT IDLE (3.8L C/H BODY)
- CHART C4F-2: C3I MISFIRE UNDER LOAD (3.8L C/H BODY)
- CHART C5: ELECTRONIC SPARK CONTROL (ESC)
- CHART C7: EXHAUST GAS RECIRCULATION (3.8L)
- CHART C8: TCC (125-C TRANS, 3.3L A/N BODY)
- CHART C8B: TCC W/440-T4 TRANS (1 OF 2) (3.3L A BODY)
- CHART C8B: TCC W/440-T4 TRANS (2 OF 2) (3.3L A BODY)
- CHART C8A: TCC W/440-T4 TRANS (1 OF 2) (3.8L)
- CHART C8A: TCC W/440-T4 TRANS (2 OF 2) (3.8L)
- CHART C10: A/C CLUTCH CONTROL (1 OF 2) (3.3L A BODY)
- CHART C10: A/C CLUTCH CONTROL (2 OF 2) (3.3L A BODY)
- CHART C10: A/C CLUTCH CONTROL (3.3L N BODY)
- CHART C10A: A/C CLUTCH CONTROL (1 OF 2) (3.8L C/H BODY)
- CHART C10A: A/C CLUTCH CONTROL (2 OF 2) (3.8L C/H BODY)
- CHART C12A: COOLING FAN FUNCTIONAL CHECK (3.3L A BODY)
- CHART C12B: NO COOLING FAN(S) (3.3L A BODY)
- CHART C12C: COOLING FAN(S) ALWAYS ON (3.3L A BODY)
- CHART C12A: COOLING FAN FUNCTIONAL CHECK (3.3L N BODY)
- CHART C12B: NO COOLING FAN (3.3L N BODY)
- CHART C12C: COOLING FAN ALWAYS ON (3.3L N BODY)
- CHART C12A: COOLING FAN FUNCTIONAL CHECK (3.8L)
- CHART C12B: COOLING FAN ALWAYS ON (3.8L)
- CHART C12C: NO LOW SPEED COOLING FAN (3.8L)
- CHART C12D: NO HIGH SPEED COOLING FAN (3.8L)
- TERMINAL ID & VOLTAGE CHARTS (3.3L VIN N, A BODY)
- TERMINAL ID & VOLTAGE CHARTS (3.3L VIN N, N BODY)
- TERMINAL ID & VOLTAGE CHARTS (3.8L VIN C, C/H BODY)
- ELECTROSTATIC DISCHARGE WARNINGS
- TEST TYPE SELECTION
- TEST SELECTION
- CODE RESET OR CLEARING SELECTION
- ECM & BCM Snapshot
- IPC SEGMENT CHECK
- EXITING "SERVICE MODE"
- DATA DISPLAYS
- INPUT DISPLAYS
- OUTPUT DISPLAYS
- OVERRIDE DISPLAYS
- TROUBLE CODE DISPLAY
- TROUBLE CODES
- PRELIMINARY PROCEDURES
- HOW TO USE THIS SECTION
- FUEL SYSTEM PRESSURE TEST
- Symptom Definition
- Possible Cause & Correction
- The following conditions must be met before testing
- DIAGNOSTIC CIRCUIT CHECK
- Diagnostic Aids
- CHART A3, ENGINE CRANKS BUT WON'T RUN (2 of 4)
- CHART A3, ENGINE CRANKS BUT WON'T RUN (3 of 4)
- CHART A3, ENGINE CRANKS BUT WON'T RUN (4 of 4)
- CHART A5, FUEL SYSTEM ELECTRICAL TEST (2 of 2)
- CHART A7, FUEL PRESSURE TEST (1 of 2)
- CHART A7, FUEL PRESSURE TEST (2 of 2)
- CHART B1, RESTRICTED EXHAUST SYSTEM CHECK
- CHART C2A, INJECTOR BALANCE TEST
- CHART C12B, COOLANT FAN CHECK (RIVIERA)
- CHART C12C-A, COOLANT FAN - NO HIGH SPEED REAR FAN
- CHART C12C-B, COOLANT FAN - NO HIGH SPEED FRONT FAN
- CHART C12D, COOLANT FAN CHECK "ON" AT ALL TIMES
- CODE EO47, ECM-BCM DATA
- CODE EO48, MISFIRE DIAGNOSIS
- CODE EO51, MEM-CAL ERROR
- WIRING DIAGRAMS
- DESCRIPTION
- COMPONENT LOCATIONS
- OPERATION
- CATHODE RAY TUBE CONTROLLER
- ELECTRONIC CLIMATE CONTROL (ECC) (TORONADO)
- Trouble Codes
- ENTERING "SERVICE MODE"
- Reatta & Riviera
- Toronado (CRT)
- Toronado (ECC Panel)
- Toronado
- Reatta, Riviera & Toronado (CRT)
- Toronado (ECC Panel & CRT)
- Reatta & Riviera (BCM Snapshot)
- Toronado BCM Snapshot (ECC Panel)
- DATA DISPLAYS
- INPUT DISPLAYS
- OUTPUT DISPLAYS
- OVERRIDE DISPLAYS
- PRELIMINARY PROCEDURES
- HOW TO USE THIS SECTION
- FUEL SYSTEM PRESSURE TEST
- Symptom Definition
- Possible Cause & Correction
- REMOVAL & INSTALLATION
- DIAGNOSTIC CIRCUIT CHECK
- Diagnostic Aids
- 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 C-2A, INJECTOR BALANCE TEST
- CHART C-4F-2, C 3 I MISFIRE UNDER LOAD
- 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-12C-B, COOLANT FAN CHECK NO HIGH SPEED FRONT FAN (REATTA)
- Note On Intermittents
- CODE B120, TWILIGHT DELAY POTENTIOMETER (REATTA & RIVIERA)
- CODE B120, TWILIGHT DELAY POT CIRCUIT (TORONADO)
- CODE B123, PANEL LAMP SWITCH CIRCUIT
- CODE B450, COOLANT TEMPERATURE TOO HIGH
- Diagnosis
- CODE B664, CRUISE - ACCELERATION TOO HIGH
- CODE C553, CRT KEEP ALIVE MEMORY ERROR (TORONADO)
- CODE C710, CRTC SWITCHING CIRCUIT PROBLEM (REATTA & RIVIERA)
- APPLICATIONS
- OVERVIEW
- TCC CONTROL COMPONENTS
- Brake Switch
- Coolant Temperature Sensor
- Electronic Control Module (ECM)
- TCC Solenoid Assembly
- Throttle Position Sensor (TPS)
- Vacuum Sensor
- Vehicle Speed Sensor (VSS)
- 3rd & 4th Gear Switch
- TROUBLE SHOOTING
- Problem in Electronic Control Module
- Electrical Problems
- Valve Body Assembly
- Oil Pump Assembly
- CONVERTER CLUTCH APPLY SLIPS, ROUGH OR SHUDDERS
- CONVERTER CLUTCH DOES NOT RELEASE
- ENTERING DIAGNOSTICS
- Reatta & Riviera
- Toronado
- EXITING DIAGNOSTIC (SERVICE) MODE (TORONADO)
- DATA DISPLAYS
- INPUT DISPLAYS
- OUTPUT DISPLAYS
- PFI CHART C-1 - ECM CHECK
- Notes On Fault Tree
- PFI Chart C-1 - ECM Check Flowchart
- Low Speed
- High Speed
- CODE E023, MAT SENSOR SIGNAL VOLTAGE HIGH - 3.8L ECM/BCM
- Diagnostic Aids
- CODE E024, VEHICLE SPEED SENSOR (VSS) CIRCUIT - 3.8 ECM/BCM
- CODE E025, MANIFOLD AIR TEMPERATURE (MAT) SENSOR CIRCUIT (HIGH TEMPERATURE INDICATED) - 3.8L ECM/BCM
- CODE E026, QUAD DRIVER (QDM) ERROR - 3.8L ECM/BCM
- CODE E027, E028 & E029, 2ND, 3RD, & 4TH GEAR SWITCH DIAGNOSIS 3.8L ECM/BCM
- CODE E031, PARK/NEUTRAL SWITCH CIRCUIT - 3.8L ECM/BCM
- CODE E039, TORQUE CONVERTER CLUTCH (TCC) CIRCUIT - 3.8L ECM/BCM
- CODE E041, CAM SENSOR SIGNAL - 3.8L ECM/BCM
- CODE B124, VEHICLE SPEED SENSOR (VSS) CIRCUIT PROBLEM - 3.8L ECM/BCM
- Note On Intermittents
- CODE B127, GEAR SELECTOR SWITCH CIRCUIT (TORONADO) - 3.8L ECM/BCM
- CODE B132, ENGINE OIL PRESSURE SENSOR CIRCUIT FAULTY - 3.8L ECM/BCM
- CHART C-8, TORQUE CONVERTER CLUTCH - 3.8L "3800" PFI
- CODE E024, VEHICLE SPEED SENSOR - 3.8L "3800" PFI
- CODE E027, E028 & E029 2ND, 3RD & 4TH GEAR SWITCH - 3.8L "3800" PFI
- CODE E031, PARK/NEUTRAL SWITCH - 3.8L "3800" PFI
- CODE E038, BRAKE SWITCH - 3.8L "3800" PFI
- CODE E039, TORQUE CONVERTER CLUTCH - 3.8L "3800" PFI
- CODE B124, VEHICLE SPEED SENSOR - 3.8L "3800" PFI
- CODE B127, GEAR SELECTOR SWITCH - 3.8L "3800" PFI - TORONADO
- CHART C-8A, TORQUE CONVERTER CLUTCH - THM 4T60 TRANSMISSION 3.8L