TSB : Timer Test (GLC Only)

Details

To check timer (located under instrument panel on left side panel), connect wires to terminals "A", "B", and "C" of timer. See Fig 1 . Connect a wire with a 30, 000 ohm resistor to terminal "D". Connect a wire with a 3.4 watt test lamp to terminal "E". Connect a voltmeter to terminal "D" and to negative battery terminal. Connect wires from terminals "A", "D", and "E" to battery positive terminal. Connect wire from terminal "C" to battery negative terminal. Voltmeter should show more than 6 volts. Fig 1: Schematic of GLC Dual Timing System and Voltmeter Hookup for Timer Test Courtesy of NOT AVAILABLE Then, connect wire from terminal "B" to battery positive terminal. Instantly, voltmeter should show less than 1 volt and test lamp should light. After approximately 105-135 seconds from showing 1 volt, voltmeter should indicate 8 volts. If not, replace timer.