Briggs & Stratton Vanguard EFI 380000, Руководство по ремонту

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DTC P0112 Signal Voltage Low (Non-Scan Diagnostics)
Step Action Yes No
1 1. Disconnect and reconnect MAT sensor and ECM connectors.
2. Install Service Power Supply Harness (Part No. 847252).
3. Clear codes.
4. Disconnect and reconnect service power supply connector.
5. Does DTC return?
Go to step 2. Problem corrected.
2 1. Disconnect service power supply connector.
2. Back probe terminal 2 (Red/White wire) of MAT sensor
connector.
3. Connect terminal 2 back probe to red meter test lead on DVOM.
4. Back probe terminal 4 (Brown wire) of MAT sensor connector.
5. Connect terminal 4 back probe to black meter test lead on
DVOM.
6. Set DVOM to read volts DC.
7. Connect service power supply connector.
8. Observe voltage on DVOM.
9. Is reading 4.7-5.0 volts DC?
MAT sensor OK. Go to step 3.
3 1. Disconnect service power supply connector.
2. Remove probe from terminal 2, and back probe terminal 3 (Tan/
Black wire) of MAT sensor connector.
3. Connect service power supply connector.
4. Observe voltage on DVOM.
5. Is reading 0.5-4.5 volts DC?
MAT sensor OK. Reading is below
0.5 volts DC.
Replace MAT sensor.
Continued...
MAP Sensor Connector ECM Connector
Not for
Reproduction