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Sensor Supply 5 – Voltage Above Normal, or Shorted to High Source
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 1695 PID: S232 SPN: 3513 FMI: 3/3 LAMP: Amber SRT: |
Sensor Supply 5 – Voltage Above Normal, or Shorted to High Source. High voltage detected at sensor supply number 5 circuit in the OEM harness. |
Severe derate in power output of the engine. Limp home power only. |
 ISX and ISM – Sensor Supply 5
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Circuit Description
The sensor supply 5 of the electronic control module (ECM) provides a 5 volt supply for the aftertreatment diesel particulate filter differential pressure sensor, remote accelerator, tachograph speed sensor, and the accelerator position sensor 2. The remote accelerator and tachograph speed sensor are optional original equipment manufacturer (OEM) components.
Component Location
Sensor supply number 5 is located in the ECM OEM harness connector and provides a 5 volt supply to various components in the OEM harness.
Conditions for Running the Diagnostics
This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running.
Conditions for Setting the Fault Codes
The ECM detects that the sensor supply 5 signal voltage is greater than 5.25-VDC for more than 1 second.
Action Taken When the Fault Code is Active
- The ECM illuminates the amber CHECK ENGINE light immediately when the diagnostic runs and fails.
- A default value for aftertreatment diesel particulate filter differential pressure is used.
- Active regeneration of the aftertreatment diesel particulate filter will be disabled.
- The engine will have limp home throttle control only.
Conditions for Clearing the Fault Code
The ECM will turn off the amber CHECK ENGINE light immediately after the diagnostic runs and passes.
Shop Talk
Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM. Refer to Procedure 019-032 (ECM Calibration Code) in Section 19 in the corresponding Troubleshooting and Repair Manual for the engine being serviced.
High voltage on the 5 volt supply wire can be caused by a short circuit to a power supply, a damaged sensor, or a damaged ECM power supply.
Refer to Troubleshooting Fault Code t05-1695
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