A L L Diagnostic Trouble Codes ( DTC )
Testing and Inspection- Driveability (DR) Tests Cold (Carbureted)
- Diagnostic Notes (Read Before Proceding)
- DR-1A Checking Choke Position
- DR-2A Choke Vacuum Kick (2-BBL)
- DR-2B Choke Valve Angle (4-BBL)
- DR-3A Heated Air Intake System
- DR-3B Vapor Containment Door (4-BBL)
- DR-3C Vapor Door Vacuum Delay Valve (4-BBL)
- DR-4A Charge Temperature Sensor Circuit
- DR-4B Charge Temperature Sensor
- DR-5A Choke Plate Position
- DR-5B Choke Control Switch
- DR-5C Voltage to Choke Heating Element (4-BBL)
- DR-5D Choke Heater Element (2-BBL)
- DR-5E Voltage to Choke Control Switch
- DR-5F Voltage to Oil Pressure Switch
- DR-5G Wire to the Choke Control Switch
- DR-6A Checking EGR System
- DR-6B EGR Vacuum Solenoid Control Voltage
- DR-6C EGR Vacuum Solenoid Supply Voltage
- DR-6D EGR Vacuum Solenoid Control Circuit
- DR-7A Checking Spark Plugs
- DR-8A Checking Secondary Ignition
- DR-9A Battery Voltage to Computer
- DR-9B Oxygen Feedback System
- DR-9C Oxygen Solenoid Control Circuit
- DR-9D Check Oxygen Solenoid For an Open
- DR-9E Checking Oxygen Solenoid
- DR-10A Checking Oxygen Solenoid
- DR-10B Checking Bowl Vent Valve
- DR-11A Checking Start to Run Pickup Coil Transfer
- DR-11B Run Pickup Coil
- DR-11C Run Pickup Coil Wires
- DR-11D Pickup Air Gap
- DR-12A Checking Basic Ignition Timing
- DR-12B Ignition System Spark Advance
- DR-12C Vacuum to Computer
- DR-13A Checking Idle RPM
- DR-13B Checking Propane RPM
- DR-13C Fast Idle RPM
- DR-14
- Driveability (DR) Tests Warm (Carbureted)
- Diagnostic Notes (Read Before Proceding)
- DR-1A Checking Carburetor Switch
- DR-2A Charge Temperature Sensor Circuit
- DR-2B Engine Charge Temperature Sensor
- DR-3A Checking Choke Plate Position
- DR-3B Choke Control Voltage
- DR-3C Voltage to Choke Heating Element (4-BBL)
- DR-3D Checking Choke Heater
- DR-3E Voltage to Choke Control Switch
- DR-3F Ignition Switch Supply Voltage
- DR-3G Wire to the Choke Control Switch
- DR-4A Checking Start to Run Pickup Coil Transfer
- DR-4B Run Pickup Coil
- DR-4C Run Pickup Coil Wires
- DR-4D Pickup Air Gap
- DR-5A Checking EGR System
- DR-5B Checking EGR Valve
- DR-5C EGR Vacuum Bleed Off Valve (2-BBL)
- DR-5D Vacuum Signal to EGR Valve
- DR-5E EGR Vacuum Bleed Off Valve (2-BBL)
- DR-5F,EGR Signal Before the Delay Valve(Federal 2-BBL)
- DR-5G Vacuum Signal at EGR Control Solenoid
- DR-5H Vacuum Signal at EGR Control Solenoid
- DR-5I Vacuum Supply Signal From the Carburetor
- DR-5J Vacuum Supply From the Intake Manifold
- DR-5K EGR Vacuum Solenoid Control Voltage
- DR-5L EGR Vacuum Solenoid Control Wire
- DR-6A Checking Secondary Ignition System
- DR-7A Air Switching System
- DR-7B Upstream Air Supply
- DR-7C Vacuum Supply to Air Switching Valve
- DR-7D Air Switching Vacuum Solenoid Control Voltage
- DR-7E Air Switching Vacuum Solenoid Control Wire
- DR-8A Checking Bowl Vent Valve
- DR-8B Checking Bowl Vent Valve
- DR-9A Battery Voltage to Computer
- DR-9B Oxygen Feedback System
- DR-9C Oxygen System Response
- DR-9D Checking Oxygen Solenoid
- DR-9E Oxygen Sensor Control Circuit
- DR-9F Oxygen Solenoid Control Wire
- DR-9G Oxygen Solenoid Control Circuit
- DR-9H Check Oxygen Solenoid For an Open
- DR-9I Voltage Supply to Oxygen Solenoid
- DR-9J Checking Oxygen Feedback System
- DR-9K Oxygen Sensor Control Circuit
- DR-10A Idle Control System
- DR-10B Voltage to Idle Control Solenoid
- DR-10C Idle Control Solenoid Operation
- DR-10D Idle Control Solenoid Wire
- DR-10E Solenoid Idle Speed
- DR-10F Solenoid Idle Speed With A/C
- DR-10G A/C or Heated Rear Window Signal to Computer
- DR-10H Idle Control Solenoid Operation
- DR-10I Idle Control Solenoid Operation With A/C
- DR-10J Checking Solenoid Idle Speed
- DR-10K Checking Computer Signal
- DR-11A Checking Basic Ignition Timing
- DR-11B Ignition System Spark Advance
- DR-11C Detonation Sensor Operation
- DR-11D Vacuum to Computer
- DR-12A Checking Idle RPM
- DR-12B Checking Propane RPM
- DR-13A Heated Air Intake System
- DR-13B Heated Air Sensor
- DR-13C Vapor Containment Door
- DR-14
- Driveability (DR) Tests Cold (Carbureted)