Component Tests and General Diagnostics

ENGINE COOLANT LEAK CHECK
1. Loosen cap.
2. Confirm that the engine coolant level is up to the filler neck.
3. Install an adapter and cap adapter to the water outlet fitting and apply 160 kPa (23 psi) pressure. Hold pressure for two minutes, while checking for leakage from the radiator, hose or connections.

CAUTION: When pressure testing the cooling system, slowly release cooling system pressure to avoid getting burned by hot coolant.
Be sure to completely clean away any moisture from the places checked.
When the tester is removed, be careful not to spill any engine coolant from it.
Be careful, when installing and removing the tester and when testing, not to deform the water outlet fitting.

4. If there is leakage, repair or replace the appropriate part.





RADIATOR CAP VALVE OPENING PRESSURE CHECK
1. Use a cap adapter to attach the cap to the tester.
2. Increase the pressure until the indicator of the gauge stops moving.

Limit: 65 kPa (9.2 psi)

Standard value:
75 - 105 kPa (11 - 15 psi)

3. Replace the cap if the reading does not remain at or above the limit.

NOTE: Be sure that the cap is clean before testing, since rust or other foreign material on the cap seal will cause an improper indication.