DTC P1693 Driver Circuit Shorted to Ground (Non-Scan Diagnostics)
Step
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?
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 continuity test.
6. Turn Ignition ON, Engine OFF.
7. Observe continuity on DVOM.
8. Is there continuity to ground?
ECM J1 (Grey) Connector
Action
Yes
Go to step 2.
Replace tachometer, or check
for short to ground on Black/Red
wire of engine connector or wire
of chassis connector (equipment
side) feeding terminal 5.
No
Problem corrected.
2
No problem found.
75