DTC P16C3: DC-DC Converter Temperature Sensor Circuit Malfunction
- Before you troubleshoot, record all freeze data, and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
- If the IPU module fan duct is blocked, DTC P16C3 may be stored.
- If the DTC cannot be cleared, do the troubleshooting for DTC U1204.
- Turn the ignition switch to ON (II).
- Clear the DTC with the HDS (see DTC CLEAR ).
- Check for Pending or Confirmed DTCs with the HDS.
Is DTC U1448, U1220, or U1221 indicated?
YES -Go to the INDICATED DTC'S TROUBLESHOOTING .
NO -Go to step 4.
- Check the DC-DC CONVERTER TEMPERATURE in the DATA LIST with the HDS.
Is more than 259°F (126°C), or less than -42°F (-41°C) indicated?
YES -Go to step 5.
NO -Intermittent failure, the system is OK at this time. Check the IPU module air duct and the IPU module fan for disconnections, damage, or obstructions.
- Turn the ignition switch to LOCK (0).
- Check the IPU module air duct and the IPU module fan for disconnections, damage, or obstructions.
Are the IPU module air duct and the IPU module fan OK?
YES -Replace the DC-DC converter (see DC-DC CONVERTER REMOVAL/INSTALLATION ), then go to step 7.
NO -Repair or replace the IPU module air duct or the IPU module fan as needed, then go to step 7.
- Turn the ignition switch to ON (II).
- Clear the DTC with the HDS (see DTC CLEAR ).
- Check for Pending or Confirmed DTCs with the HDS.
Is DTC P16C3 indicated?
YES -Check for poor connections or loose terminals at the DC-DC converter and the MCM, then go to step 1.
NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC'S TROUBLESHOOTING .