Engine: Testing and Inspection
ENGINE (1NZ-FXE)INSPECTION
1. INSPECT ENGINE COOLANT
2. INSPECT ENGINE OIL
3. INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSY
4. INSPECT SPARK PLUG
5. INSPECT FAN AND GENERATOR V BELT
a. Inspect the V-ribbed belt tension and deflection.
Belt deflection: (Pressing force 98 N (10 kgf, 22 lbs)
Belt tension
NOTICE:
^ Inspect the belt deflection at the specified point of the pulley.
^ When replacing the belt with a new one, adjust the belt deflection and tension to the intermediate values of the "New Belt".
^ When inspecting the belt which have been used for over 5 minutes, apply the belt deflection and tension of the "Used Belt".
^ When reinstalling the belt which have been used for over 5 minutes, adjust the belt deflection and tension to the intermediate values of the "Used Belt".
6. INSPECT ENGINE IDLE SPEED
a. Set the vehicle to inspection mode.
b. Warm up the engine.
c. Connect the hand-held tester to the DLC3.
d. Turn the power switch ON (IG).
e. Select the item: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / ENGINE SPD
Idle speed: 950 to 1050 rpm (P range)
NOTICE:
^ Turn all the electrical systems OFF.
^ Inspect the engine idle speed with the cooling fan OFF.
HINT: Refer to the hand-held tester operator's manual if you need help to select DATA LIST.
7. INSPECT IGNITION TIMING
a. Set the vehicle to inspection mode.
b. Warm up the engine.
c. Connect the hand-held tester to the DLC3.
d. Turn the power switch ON (IG).
e. Select the item: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / IGN ADVANCE
Ignition timing: 8 to 12°CA BTDC (at idle)
NOTICE:
^ Turn all the electrical systems OFF.
^ Inspect the engine idle speed with the cooling fan OFF.
HINT: Refer to the hand-held tester operator's manual if you need help to select DATA LIST.
f. Check that the ignition timing advances immediately when the engine speed is increased.
8. INSPECT COMPRESSION
a. Remove the windshield wipe link assembly.
b. Remove the cowl top panel outer front
c. Set the vehicle to inspection mode.
d. Warm up the engine.
e. Remove the air cleaner assembly.
f. Disconnect all the fuel injector connectors.
g. Disconnect the 4 ignition coil connectors and remove the 4 bolts. Then remove the 4 ignition coils.
NOTICE: If inspecting the compression with the ignition coil connector disconnected, a DTC will be detected. After the inspection, check the DTC.
h. Remove all the spark plugs.
i. Insert a compression gauge.
j. Connect the hand-held tester to the DLC3.
k. Turn the power switch ON (IG).
l. Select the item: DIAGNOSIS / OBD/MOBD / HV ECU / ACTIVE TEST / CRANKING RQST
m. Turn the power switch ON with depressing the brake pedal. Then, measure the compression pressure of each cylinder.
Compression pressure: 882 kPa (9.0 kgf/cm2, 128 psi)
Minimum pressure: 686 kPa (7.0 kgf/cm2, 99 psi)
Difference between each cylinder: 98 kPa (1.0 kgf/cm2, 14 psi)
NOTICE:
^ Measure the compression pressure as quickly as possible.
^ After performing all the procedures, be sure to clear DTCs stored in the memory. Then check that the normal code is output.
If the compression pressure is low, pour a light coat of engine oil into the cylinder block, then measure the compression pressure again.
HINT:
^ If the compression increases after pouring engine oil, the piston ring may be damaged.
^ If the compression does not change after pouring engine oil, defects may be occurring around the valve.
n. Install all the spark plugs.
Torque: 18 Nm (184 kgf-cm, 13 ft. lbs.)
o. Install the 4 ignition coil connectors.
Torque: 9.0 Nm (92 kgf-cm, 80 inch lbs.)
p. Connect the 4 ignition coil connectors.
q. Connect all the fuel injector connectors.
r. Install the air cleaner assembly.
s. Install the cowl top panel outer front.
t. Install the windshield wipe link assembly
9. INSPECT CO/HC
a. Set the vehicle to inspection mode.
b. Race the engine at 2,500 rpm for approximately 180 seconds.
c. Insert at least 40 cm (1.3 ft) of the CO/HC meter testing probe into the tailpipe while idling.
d. Immediately check the CO/HC concentration at idle and 2,500 rpm.
HINT:
^ Complete the measuring within 3 minutes.
^ When doing the 2 mode (at idle and 2,500 rpm) test, the procedure may vary according to local regulations.
e. If the CO/HC concentration does not comply with regulations, perform troubleshooting in the order given below.
1. Check the heated oxygen sensor operation.
2. See the table below for possible causes, then inspect the applicable causes and correct them if necessary.