Dtc P0118 Signal Voltage High Or Open (Non-Scan Diagnostics) - Briggs & Stratton VANGUARD M490000 Repair Manual

DTC P0118 Signal Voltage High or Open (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?
ECM J2 (Black) Connector
Action Yes
Go to step 2.
EHT sensor OK.
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
Reading is above
4.5 volts DC. EHT
sensor is bad.
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