A) Set the ignition switch to position "ON" and check that the indicator lights up. If the indicator does not light up, then check the indicator lamp.
b) Start the engine: the indicator should turn off.
V) If the indicator does not go out, then press "service switch".
G) If the indicator stays on, check "service switch".
d) With the engine running, check that the indicator lights up when you press the "service switch".
e) Press "service switch" again and check that the indicator is off.
2. Verification "service switch",
A) Check that the continuity between the terminals "A" And "IN" changes each time you click on "service switch".
Note: after checking, install "service switch " to a position where there is no conduction and check that the indicator is off.
b) If "service switch" does not operate as specified, replace the speedometer assembly.