Supplemental Inflatable Restraint (SIR) or Supplemental Restraint System (SRS) Icon

This icon is used to alert the technician that the system contains SIR/SRS components that require certain precautions before servicing.

On-Board Diagnostic (OBD II) Icon

This icon is used to alert the technician that the circuit is essential for proper OBD II emission controls circuit operation. Any circuit which, if it fails, causes the malfunction indicator lamp (MIL) to turn on, is identified as an OBD II circuit.

Important Icon

This icon is used to alert the technician that there is additional information that will aid in servicing a system.

Voltage Indicator Boxes

These boxes are used on schematics to indicate when voltage is present at a fuse.

Partial Component

When a component is represented in a dashed box, the component or its wiring is not shown in its entirety.

Entire Component

When a component is represented in a solid box the component or its wiring is shown in its entirety.

Fuse

Circuit Breaker

Fusible Link

Connector Attached to Component

Pigtail Connector

Bolt On or Screw On Eyelet Terminal

Inline Harness Connector

Splice

Pass Through the Grommet

Chassis Ground

Case Ground

Single Filament Light Bulbs

Double Filament Light Bulb

Light Emitting Diodes

Capacitor

Battery

Variable Battery

Resistor

Variable Resistor

Position Sensor

I/O Resistors

I/O Switches

Diode

Crystal

Heating Elements

Motor

Solenoid

Coil

Antenna

Shield

Switches

Single Pole Single Throw Relay

Single Pole Double Throw Relay