Dtc P0117 Signal Voltage Low (Non-Scan Diagnostics) - Briggs & Stratton VANGUARD M490000 Repair Manual

DTC P0117 Signal Voltage Low (Non-Scan Diagnostics)

Step
1 1. Disconnect and reconnect ECM J2 (Black) connector.
2. Turn Ignition ON, Engine OFF.
3. Clear codes.
4. Turn Ignition OFF, and then back ON.
5. Does DTC return?
2 1. Turn Ignition OFF.
2. Back probe terminal J2-14 (Tan wire) of ECM connector.
3. Connect terminal J2-14 back probe to red meter test lead on
DVOM.
4. Back probe terminal J2-10 (Brown wire) of ECM connector.
5. Connect terminal J2-10 back probe to black meter test lead on
DVOM.
6. Set DVOM to read volts DC.
7. Turn Ignition ON, Engine OFF.
8. Observe voltage on DVOM.
9. Is reading 0.5-4.5 volts DC?
3
1. Reading is below 0.5 volts DC.
2. Is ECM J2 connector fully mated?
ECM J2 (Black) Connector
Action Yes
Go to step 2.
EHT sensor OK.
EHT sensor is bad.
Replace EFI wire harness.
NOTE: EHT sensor is an integral part
of the EFI wire harness and is not sold
separately.
No
Problem corrected.
2
Go to step 3.
Connect connector.
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