821861A92 Mercury POWERHEAD (175)

Illustration 1 g01023143
Typical circuit with EMCP IITest Step 1. Check for an Open Circuit in the OFF/RESET Position.
If equipped, disconnect the remote start/stop initiate contacts from the terminal strip in the customer connection box.
Disconnect the harness connector from the GSC+.
Check whether the corresponding contact of the GSC+ harness connector is the only contact that is connected to the battery negative.
Turn the ECS to the OFF/RESET position.
At the GSC+ harness connector, measure the resistance from contact "39" to the -Battery terminal of the relay module. Measure the resistance from contacts "32", "33" and "40" to the -Battery terminal. Make a note of the resistances that are measured.Expected Result:The resistance that is measured from contact "39" to the -Battery terminal of the relay module is 5 Ohms or less. The resistance that is measured from contacts "32", "33" and "40" to the -Battery terminal is greater than 5000 Ohms.Results:
OK - All resistance measurements are correct. Proceed to Test Step 2.
Not OK - The resistance measurements are not correct. The harness wiring with the incorrect resistance measurement is open or the harness wiring has failed. Repair: Repair the harness wiring or replace the harness wiring. Repair the wiring or replace the wiring between the -Battery terminal, the ECS, and the GSC+. Reconnect the remote start/stop initiate contacts after troubleshooting is complete. Stop.Test Step 2. Check for an Open Circuit in the AUTO Position.
If equipped, the remote start/stop initiate contacts will remain disconnected from the terminal strip in the customer connection box.
The harness connector remains disconnected from the GSC+.
Check whether the corresponding contact of the GSC+ harness connector is the only contact that is connected to the battery negative.
Place the ECS in the AUTO position. Measure the resistance from contact "40" of the GSC+ harness connector to the -Battery terminal of the relay module. Measure the resistance from contacts "32", "33" and "39" to the -Battery terminal. Make a note of the resistances that are measured.Expected Result:The resistance that is measured from contact "40" to the -Battery terminal of the relay module is 5 Ohms or less. The resistance that is measured from contacts "32", "33" and "39" to the -Battery terminal is greater than 5000 Ohms.Results:
OK - The resistance measurements are correct. Proceed to Test Step 3.
Not OK - The resistance measurements are not correct. The harness wiring with the incorrect resistance measurement is open or the harness wiring has failed. Repair: Repair the harness wiring or replace the harness wiring. Repair the wiring or replace the wiring between the -Battery terminal, the ECS, and the GSC+. Reconnect the remote start/stop initiate contacts after the troubleshooting is completed. Stop.Test Step 3. Check for an Open Circuit in the MAN/START Position.
If equipped, the remote start/stop initiate contacts will remain disconnected from the terminal strip in the customer connection box.
The harness connector remains disconnected from the GSC+.
Check whether the corresponding contact of the GSC+ harness connector is the only contact that is connected to the battery negative.
Place the ECS in the MAN/START position. Measure the resistance from contact "33" of the GSC+ harness connector to the -Battery terminal of the relay module. Measure the resistance from contacts "32", "39" and "40" to the -Battery terminal. Make a note of the resistances that are measured.Expected Result:The resistance that is measured from contact "33" to the -Battery terminal of the relay module is 5 Ohms or less. The resistance that is measured from contacts "32", "39" and "40" to the -Battery terminal is greater than 5000 Ohms.Results:
OK - The resistance measurements are correct. Proceed to Test Step 4.
Not OK - The resistance measurements are not correct. The harness wiring with the incorrect resistance measurement is open or the harness wiring has failed. Repair: Repair the harness wiring or replace the harness wiring. Repair the wiring or replace the wiring between the -Battery terminal, the ECS, and the GSC+. Reconnect the remote start/stop initiate contacts after the troubleshooting is completed. Stop.Test Step 4. Check for an Open Circuit in the COOLDOWN/STOP Position.
If equipped, the remote start/stop initiate contacts will remain disconnected from the terminal strip in the customer connection box.
The harness connector remains disconnected from the GSC+.
Check whether the corresponding contact of the GSC+ harness connector is the only contact that is connected to the battery negative.
Place the ECS in the COOLDOWN/STOP position. Measure the resistance from contact "32" of the GSC+ harness connector to the -Battery terminal of the relay module. Measure the resistance from contacts "33", "39" and "40" to the -Battery terminal. Make a note of the resistances that are measured.Expected Result:The resistance that is measured from contact "32" to the -Battery terminal of the relay module is 5 Ohms or less. The resistance that is measured from contacts "33", "39" and "40" to the -Battery terminal is greater than 5000 Ohms.Results:
OK - The resistance measurements are correct. Proceed to Test Step 5.
Not OK - The resistance measurements are not correct. The harness wiring with the incorrect resistance measurement is open or the harness wiring has failed.Repair: Repair the harness wiring or replace the harness wiring. Repair the wiring or replace the wiring