Test 13 - Fuel Injector Circuits (Code 33)

1. Turn ignition switch on. Check that voltage is being applied to ECU connector terminal No. 21 and 22. If voltage is not present, disconnect fuel injector harnesses at connector.
2. Check that voltage is present at connectors. If voltage is not present, check dropping resistor, main relay and ignition switch. Turn ignition switch off.
3. Check continuity of injector circuit as indicated in table. If resistance are incorrect, repair or replace faulty parts.

TESTING FUEL INJECTOR CIRCUIT

Test Point	ECU Connector Terminal No.	Resistance (Ohms)
Injector A & B	21	0
Ground	21	Infinity
Injector C & D	22	0
Ground	22	Infinity

NOTE: If ECU connector terminal No. 21 is shorted, also check multi-drive monitor for short to ground.

Fig 1: Test Chart 13