AS RTP9007S, Operation Manual

Page: 26 / 44

English
tester RTP9007S
24
2. Enter the voltage regulator type selection mode, select the nominal voltage (12 or 24 volts)
and activate the test mode for COM voltage regulators.
3. Wait for the tester to read-out data. As soon as the values are displayed in ID, Version LIN, and
Type boxes we can proceed to testing.
3.1. After the data read-out is completed, the stabilizing voltage must set at 13.8V. The
allowable deviation is ±0,2V.
4. Set rpm to zero, the M value must appear in box ERRORS. As soon as the alternator speed
increases up to 800-1200 rpm, M is no longer displayed in the box ERRORS. It means, the system
of voltage regulator self-diagnosis is fault-free.
4.1 The E value displayed in box ERRORS upon speeding up the rotation to 1200 rpm, signals
electrical fault of the voltage regulator. At this point any further diagnostics makes no sense.
5. Change the preset stabilizing voltage in the range from minimum to maximum values. The
measured stabilizing voltage must vary in proportion to it.
6. Failure to perform as described in sub-items 3-5 signals the voltage regulator malfunction.
7. Press BACK to exit the test mode. Disconnect the clips form the voltage regulator
.
5 ALTERNATOR TESTING
Alternator testing on a vehicle is performed as follows:
WARNING! The tester does not allow the diagnostics of alternators without voltage
regulators.
1. Search the information on markings of the alternator terminals by the voltage regulator OEM
number. Identify the alternator type by the contacts of the alternator terminals and based on
the information set out in Appendices 1 and 2.
2. Connect the tester to the alternator observing the markings of cable MS-33501 (see
Section 1). Follow the instructions set out in Appendix 1.
2.1 Connect cable clip B+ to the alternator positive terminal. Connect cable clip B- either to the
alternator frame or to the negative battery terminal. Being powered by the alternator, the
tester will turn on and the main menu will appear on the screen (Fig.7).
2.2. Connect the clips of MS-33501 cable to the respective contacts in the alternator terminals.