14–
7
14
Service Precautions
Visual inspection can reduce the unnecessary test and diagnostic time, so pay attention to the inspection of
the following items:
1. Check the lines and hoses for obvious looseness, and if they are disconnected or routed improperly.
2. Make sure battery connections are clean and firm.
3. Check if alternator wire and belt are installed correctly and securely.
4. Confirm that ignition coils are installed securely.
5. Check if engine wire harness connectors are inserted fully.
6. Check if all electrical connectors are installed correctly and securely.
7. Check the following electrical connections:
a. Engine speed sensor;
b. Oxygen sensor;
c. Intake pressure/temperature sensor;
d. Oil pressure switch;
e. Ignition coil;
f. Canister solenoid valve;
g. Camshaft position sensor;
h. Electronic throttle valve;
i. Intake VVT control valve;
j. Exhaust VVT control valve;
k. Fuel injector.
8. Check the routing of all vacuum hoses.
9. Confirm that the following vacuum hoses are connected securely without any leakage:
a. Canister solenoid valve;
b. Charcoal canister;
c. PCV valve;
d. Warm damper vacuum system;
e. Brake booster.
10.Check the fuel pump hose and wire connection to make sure they are connected securely.