Test Procedure

-- Remove the engine control module Power Supply Relay 2 (terminal 15) -J681-.

Checking the supply voltage

-- Turn the ignition switch ON

-- Using a multimeter, measure the voltage of the engine control module power supply relay circuit (socket 1/30).

Specified value: battery voltage.

-- Turn the ignition switch OFF

If the specified value was not obtained:

-- Check the power supply circuit to the engine control module power supply relay Power Supply Relay 2 (terminal 15) -J681- for an open circuit or a short circuit.

-- Check the wiring connections for damage, corrosion, loose or broken terminals.

-- Repair as necessary.

-- Turn the ignition switch ON

-- Using a multimeter, measure the voltage of the engine control module power supply relay ignition circuit (socket 3/86).

Specified value: battery voltage.

-- Turn the ignition switch OFF

If the specified value was not obtained:

-- Check the ignition circuit to the engine control module power supply relay Power Supply Relay 2 (terminal 15) -J681- for an open circuit or a short circuit.

-- Check the wiring connections for damage, corrosion, loose or broken terminals.