Scan Tool Testing and Procedures

OPERATION INSPECTION
1. REMOVE THE FUSE COVER ON THE INSTRUMENT PANEL.



2. CONNECT THE TOYOTA HAND-HELD TESTER TO THE DLC3.
3. TURN THE IGNITION SWITCH ON AND TOYOTA HAND-HELD TESTER MAIN SWITCH ON.
NOTICE: Do not start the engine.

4. SELECT THE ACTIVE TEST MODE ON THE TOYOTA HAND-HELD TESTER.
- Refer to the Toyota hand-held tester operator's manual for further details.




5. CHECK THAT THERE IS PRESSURE IN THE FUEL INLET HOSE FROM THE FUEL FILTER.
HINT: If there is fuel pressure, you will hear the sound of fuel flowing.

- If there is no pressure, check these parts:
- Fusible link
- Fuses {AM2 (30A); IGN (7.5A)}
- EFI relay
- Fuel pump
- ECM
- Wiring connections

6. TURN THE IGNITION SWITCH TO LOCK.
7. DISCONNECT THE TOYOTA HAND-HELD TESTER FROM THE DLC3.
8. REINSTALL THE FUSE COVER ON THE INSTRUMENT PANEL.

RESISTANCE INSPECTION
1. REMOVE REAR SEAT CUSHION
2. REMOVE FLOOR SERVICE HOLE COVER
3. DISCONNECT FUEL PUMP & SENDER GAUGE CONNECTOR
4. INSPECT FUEL PUMP RESISTANCE



- Using an ohmmeter, measure the resistance between terminals 4 and 5.

Resistance @ 20°C (68°F): 0.2 - 3.0 Ohms

- If the resistance is not as specified, replace the fuel pump.

5. RECONNECT FUEL PUMP & SENDER GAUGE CONNECTOR
6. REINSTALL FLOOR SERVICE HOLE COVER
7. REINSTALL REAR SEAT CUSHION