On-Vehicle Inspection
ON-VEHICLE INSPECTION1. CHECK FUEL PUMP OPERATION
a. Connect a hand-held tester to the DLC3.
b. Turn the ignition switch ON, and push the hand-held tester main switch ON.
NOTE: Do not start the engine.
c. Select the active test mode on the hand-held tester.
d. Please refer to the hand-held tester operator's manual for further details.
e. If you have no hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector.
f. Turn the ignition switch OFF.
g. Disconnect the hand-held tester from the DLC3.
2. CHECK FUEL PRESSURE
a. Check the battery positive voltage is above 12 V.
b. Disconnect the negative (-) terminal cable from the battery.
c. Remove the 6 bolts, and disconnect the No.2 timing belt cover.
d. Remove the union bolt holding the fuel pipe to the delivery pipe and gasket.
NOTE:
- Put a shop towel under the delivery pipe.
- Slowly loosen the union bolt.
e. Install SST (pressure gauge) to the delivery pipe with the 2 gaskets and SST (union and union bolt).
SST 09268-45014
Torque: 34.3 N.m (350 kgf.cm, 25 ft.lbf)
f. Wipe off any splattered gasoline.
g. Connect a hand-held tester to the DLC3 (See step 1).
h. Reconnect the negative (-) terminal cable to the battery.
i. Turn the ignition switch ON.
j. Measure the fuel pressure.
Fuel pressure: 265 - 304 kPa (2.7 - 3.1 kgf/sq.cm, 38 - 44 psi)
If pressure is high, replace the fuel pressure regulator.
If pressure is low, check the fuel hoses, connections, fuel pump, fuel filter and fuel pressure regulator.
k. Disconnect the hand-held tester from the DLC3.
l. Reinstall the No.2 timing belt cover with the 6 bolts.
m. Start the engine.
n. Disconnect the vacuum sensing hose from the fuel pressure regulator, and plug the hose end.
o. Measure the fuel pressure at idle.
Fuel pressure: 265 - 304 kPa (2.7 - 3.1 kgf/sq.cm, 38 - 44 psi)
p. Reconnect the vacuum sensing hose to the fuel pressure regulator.
q. Measure the fuel pressure at idle.
Fuel pressure: 226 - 265 kPa (2.3 - 2.7 kgf/sq.cm, 33 - 38 psi)
If pressure is not as specified, check the vacuum sensing hose and fuel pressure regulator.
r. Stop the engine.
s. Check that the fuel pressure remains as specified for 5 minutes after the engine has stopped.
Fuel pressure: 147 kPa (1.5 kgf/sq.cm, 21 psi) or more
If pressure is not as specified, check the fuel pump, pressure regulator and/or injectors.
t. After checking fuel pressure, disconnect the negative (-) terminal cable from the battery and carefully remove the SST to prevent gasoline from splashing.
SST 09268-45014
u. Remove the other union bolt, 3 gaskets and fuel pipe from the delivery pipes.
v. Reinstall the fuel pipe with 4 new gaskets and the 2 union bolts.
Torque: 34.3 N.m (350 kgf.cm, 25 ft.lbf)
w. Reconnect the negative (-) terminal cable to the battery.
x. Check for fuel leaks.