Briggs & Stratton VANGUARD M490000, Руководство по ремонту

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DTC P1694 Driver Circuit Shorted to Power (Non-Scan Diagnostics)
Step Action Yes No
1 1. Disconnect and reconnect engine, tachometer and ECM J1 (Grey)
connectors.
2. Turn Ignition ON, Engine OFF.
3. Clear codes.
4. Turn Ignition OFF, and then back ON.
5. Does DTC return?
Go to step 2. Problem corrected.
2 1. Turn Ignition OFF.
2. Back probe terminal J1-06 (Black/Red wire) of ECM connector.
3. Connect terminal J1-06 back probe to red meter test lead on DVOM.
4. Connect black meter test lead on DVOM to a known good ground.
5. Set DVOM to read volts DC.
6. Turn Ignition ON, Engine OFF.
7. Observe voltage on DVOM.
8. Is reading greater than 9 volts DC?
Replace tachometer, or check
for short to power on Black/Red
wire of engine connector or wire
of chassis connector (equipment
side) feeding terminal 5.
No problem found.
ECM J1 (Grey) Connector
Not for
Reproduction