Wiring Diagram Cluster

1990 Pontiac Grand AM Alternator Wiring Diagram

Find charging-system schematics including alternator field/control wiring, battery feeds, and fuse/relay paths.

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Matched Diagrams

48

Variant Used

Grand AM L4-138 2.3L VIN A FI HP

Total Vehicle Diagrams

507

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Factory Manual Evidence

When there is no clean repair shortcut for this system, drop into the OEM manual sections that usually carry the authoritative test path.

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Diagnostic signal

Codes Often Seen With This System

Use the code cluster when wiring faults overlap with check-engine or module-level diagnostics.

P0563: System Voltage High →
P0562: System Voltage LowB1318: Battery Voltage LowP0601: ECM/PCM Memory Check Sum Error

Top Alternator Diagram Paths

1.Electrical Diagrams > Starting and Charging > Charging System > AlternatorGeneralOpen2.Charging System — Diagnostic Aids > Pull-to-Seat ConnectorsStarting and ChargingOpen3.Charging System — Diagnostic Aids > Push-to-Seat ConnectorsStarting and ChargingOpen4.Charging System — Diagram Information and Instructions > Cell ReferencesStarting and ChargingOpen5.Charging System — Diagram Information and Instructions > Schematic SymbolsStarting and ChargingOpen6.Charging System — Diagram Information and Instructions > Symbol IdentificationStarting and ChargingOpen7.Charging System — Diagram Information and Instructions > Wire Color Code IdentificationStarting and ChargingOpen8.Charging System — Electrical DiagramsStarting and ChargingOpen9.Electrical Diagrams > Charging SystemStarting and ChargingOpen10.Electrical Diagrams > Starting and Charging > Charging System > System DiagramGeneralOpen11.Electrical Diagrams > Starting and Charging > System Diagram > Charging SystemGeneralOpen12.Electrical Diagrams > Starting and Charging > System Diagram > Starting SystemGeneralOpen13.Electrical Diagrams > Starting and Charging > Battery > Battery CableGeneralOpen14.Electrical Diagrams > Starting and Charging > Battery > System DiagramGeneralOpen15.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > Fuse > A/C, Heater, Ignition, Power Accessories and Power WindowGeneralOpen16.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > Fuse > Back-Up, Turn, ECM Relays, Fuel Pump and InjectorGeneralOpen17.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > Fuse > Cigar, Clock, Hazard and StopGeneralOpen18.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > Fuse > Courtesy and HornGeneralOpen19.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > Fuse > Courtesy, Horn and TailGeneralOpen20.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > Fuse > Fuel Pump, Injector, Gauges, Radio and WiperGeneralOpen21.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > System Diagram > Ground Distribution > G100, G104, G109 and G110GeneralOpen22.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > System Diagram > Ground Distribution > G101 and G102GeneralOpen23.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > System Diagram > Ground Distribution > G200 and G201 > Le Model > Part 1 of 2GeneralOpen24.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > System Diagram > Ground Distribution > G200 and G201 > Le Model > Part 2 of 2GeneralOpen25.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > System Diagram > Ground Distribution > G200 and G201 > SE Model > Part 1 of 2GeneralOpen26.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > System Diagram > Ground Distribution > G200 and G201 > SE Model > Part 2 of 2GeneralOpen27.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > System Diagram > Power Distribution Wiring Circuit > Part 1 of 2GeneralOpen28.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > System Diagram > Power Distribution Wiring Circuit > Part 2 of 2GeneralOpen29.Electrical Diagrams > Starting and Charging > Starting System > Neutral Safety SwitchGeneralOpen30.Electrical Diagrams > Starting and Charging > Starting System > Starter MotorGeneralOpen31.Electrical Diagrams > Starting and Charging > Starting System > Starter SolenoidGeneralOpen32.Electrical Diagrams > Starting and Charging > Starting System > System DiagramGeneralOpen33.Battery — Diagnostic Aids > Pull-to-Seat ConnectorsStarting and ChargingOpen34.Battery — Diagnostic Aids > Push-to-Seat ConnectorsStarting and ChargingOpen35.Battery — Diagram Information and Instructions > Cell ReferencesStarting and ChargingOpen36.Battery — Diagram Information and Instructions > Schematic SymbolsStarting and ChargingOpen37.Battery — Diagram Information and Instructions > Symbol IdentificationStarting and ChargingOpen38.Battery — Diagram Information and Instructions > Wire Color Code IdentificationStarting and ChargingOpen39.Battery — Electrical DiagramsStarting and ChargingOpen40.Diagnostic Aids > Pull-to-Seat ConnectorsStarting and ChargingOpen41.Diagnostic Aids > Push-to-Seat ConnectorsStarting and ChargingOpen42.Diagram Information and Instructions > Cell ReferencesStarting and ChargingOpen43.Diagram Information and Instructions > Schematic SymbolsStarting and ChargingOpen44.Diagram Information and Instructions > Symbol IdentificationStarting and ChargingOpen45.Diagram Information and Instructions > Wire Color Code IdentificationStarting and ChargingOpen46.Electrical Diagrams > Starting SystemStarting and ChargingOpen47.Power and Ground Distribution — Diagnostic Aids > Pull-to-Seat ConnectorsStarting and ChargingOpen48.Power and Ground Distribution — Diagnostic Aids > Push-to-Seat ConnectorsStarting and ChargingOpen

Parts & Tools for This Job

Common parts shoppers buy for 1990 Pontiac Grand AM Alternator.

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Assorted Fuses

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Digital Multimeter

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Wire Repair Kit

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Likely Trouble Codes for This System

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P0563: System Voltage HighCode

Electrical code commonly seen during alternator diagnosis.

P0562: System Voltage LowCode

Electrical code commonly seen during alternator diagnosis.

B1318: Battery Voltage LowCode

Body/Electrical code commonly seen during alternator diagnosis.

P0601: ECM/PCM Memory Check Sum ErrorCode

Electrical code commonly seen during alternator diagnosis.

B0001: Driver Frontal Stage 1 Deployment ControlCode

Body/Electrical code commonly seen during alternator diagnosis.

B0010: Passenger Frontal Stage 1 Deployment ControlCode

Body/Electrical code commonly seen during alternator diagnosis.

More Grand AM Wiring Pages

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Same System, Other Vehicles

1990 Toyota Supra Alternator Wiring Diagram1990 Honda Prelude Alternator Wiring Diagram1994 Toyota Celica Alternator Wiring Diagram1995 Toyota Celica Liftback Alternator Wiring Diagram1993 Honda Accord Alternator Wiring Diagram1990 Ford Probe Alternator Wiring Diagram1997 Toyota Supra Liftback Alternator Wiring Diagram1991 Ford Thunderbird Alternator Wiring Diagram
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