Voltage Drop Testing; Charging System Voltage Testing - Surtek MUL04 Manual De Usuario Y Garantía

7. VOLTAGE DROP TESTING

Test the voltage drops caused by the switch, cable, solenoid or connector. Any
abnormal voltage drop generally results from an additional resistance. The
resistance will restrict the currents upon the start of the engine, leading to the
reduction of the load voltage of the battery and the slow-down of the start of
the engine.
1. Cut off the ignition system so as to disable the start of the automobile.
Cut off the main ignition coil, shunt coil, cam and starting sensor so as to
cut off the ignition system. Operate by reference to the automotive manual.
2. Set the rotary switch of the multimeter to the 200mV
3. or 2VDC. As prompted at the LCD connect terminal, insert the red test lead
into the V terminal and the black one into the COM terminal.
4. Refer to the LOSS typical trigger voltage circuit. (see Fig. 6 )
Test the voltage between any of the following pairs of points respectively:1 & 2, 2
&3, 4 & 5, 5 & 6, 6 & 7, 7 & 8, 8 & 9, 8 &10
COMPONENT
Switch
Lead
Grounding
Battery Lead Conne
Wiring
Compare the readings of the tested voltages against the said table. If the voltage is
on the high side, check the components and connectors to see if there is anything
wrong. If anything wrong is found, do necessary servicing..

8. CHARGING SYSTEM VOLTAGE TESTING

This testing is used to see if the charging system operates normally so as to provide
the electronic systems with adequate power (lamps, electric fans, radio sets, etc.).
1. Set the rotary switch of the multimeter to the 20 VDC As prompted at the LCD
connect terminal, insert the red test lead into the V terminal and the black one
into the COM terminal..
2. Connect the black test lead probe to the negative pole of the battery and the
red one to the positive pole of the battery.
3. Run the engine idle and close or turn off all the accessories with the normal
voltage readings being 13.2 V to 15.2 V.
4. Open the throttle and control the rotation speed of the engine between 1800
RPM and 2800 RPM. The voltage readings should be consistent with those in (3)
(with the difference being no more than 0.5 V).
5. Turn on the lamps, windshield wipers, fans and so on to increase the loads of the
electronic systems with the voltage readings being no less than 13.0 V.
6. If the readings in Steps 3., 4. and 5. are normal, the charging system is also
normal. If the readings in Steps 3., 4. and 5. are beyond the limits or inconsistent
Fig. 7
Starter
E N G L I S H •
VOLTAGE
300 mV
200 mV
100 mV
50mV
0.0V
Use r's M a nual
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