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Accelerator Supply – High Voltage
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 2185 PID: S232 SPN: 620 FMI: 3 LAMP: Yellow SRT: |
Accelerator supply above 5.5 VDC. |
Accelerator default value used. Limp home accelerator will be used by electronic control module (ECM). |
 Accelerator Supply Circuit
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Circuit Description
The accelerator pedal provides the driver’s accelerator command to the electronic control module (ECM) through the OEM harness and the OEM interface harness. The ECM uses this signal to determine the fueling command.
Component Location
The accelerator pedal location varies with each OEM. Use the OEM troubleshooting and repair manual.
Shop Talk
The accelerator position sensor is a potentiometer. The accelerator position sensor resistance specifications are:
- Between supply and return = 2000 to 3000 ohms
- Between supply and signal: Released = 1500 to 3000 ohms, depressed = 200 to 1500 ohms.
Note: If the accelerator or accelerator position sensor is replaced, or after a calibration download is performed, cycle the accelerator pedal (turn keyswitch on) through its complete travel three times. This procedure calibrates the new accelerator with the ECM.
- Possible causes of this fault code include an open circuit in the return wire, short circuit to +5 VDC or +12 VDC, defective accelerator position sensor, or a failed ECM power supply.
Refer to Troubleshooting Fault Code t05-2185
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