EXCEL SYSTEM TROUBLESHOOTING: WITH
ERIC CHARGING
Test Procedures
28
CAUTION
• Be careful not to damage the wire or terminal when back-probing.
• When testing voltage, the batteries must remain connected.
• When testing voltage, unless specifically directed to do otherwise in a procedure, connect the black (–) probe of
the multimeter to the negative post of battery no. 6 (6 x 8-Volt battery set) or the B- terminal of the controller,
whichever is easier to access.
• When testing controller functions, the Run/Tow switch must be in the RUN position. The TOW position removes
power to the controller.
• Several test can be performed by accessing components through the access panel in the rear body. If greater
access is required, the two center batteries can be removed and the component mounting plate leaned forward;
place the two center batteries on the floorboard and reconnect two of the existing battery cables. Use a third,
“service only” cable that is long enough to connect the two batteries just for troubleshooting.
Index of Test Procedures
1 – Batteries / Voltage Check (BPV)
2 – 48-Volt Battery Pack Voltage Under Load
3 – Tow/Run Switch
4 – 15-Amp Fuse
5 – Key Switch and MCOR Limit Switch Circuit
6 – Forward/Reverse Rocker Switch
7 – Solenoid Activating Coil
8 – Pre-Charge Resistor
9 – Solenoid Continuity
10 – Charger Interlock
11 – MCOR Voltage
12 – Motor Speed Sensor
13 – A1 and A2 Motor Voltage
14 – Voltage at Charger Receptacle Red Wire Socket
15 – 16-Pin Connector
16 – Reverse Buzzer
17 – Charge Indicator Light
18 – 4-Pin Connector (for Connected Car Device)
TEST PROCEDURE 1 – Batteries / Voltage Check (BPV)
See General Warnings on page 1-2.
NOTE:
This is a voltage test.
The batteries must be properly maintained and fully charged in order to perform the following test procedures.
Battery maintenance procedures, including watering information and allowable mineral content, can be found
in the Battery section of this manual.
See Battery Care on page 30-6.
The battery voltage can be displayed with the IQDM handset. If an IQDM handset is not available, proceed to
Batteries / Voltage Check without the IQDM Handset
.
Batteries / Voltage Check with the IQDM Handset
1.
Connect the IQDM to the vehicle.
2.
Access the Monitor menu and select BATT VOLTAGE by using the SCROLL DISPLAY buttons. The IQDM
should indicate at least 48 volts.
See following NOTE.
If not, check for loose battery connections or a battery
2014 Precedent
®
Golf Car Maintenance and Service Manual
Page 28-17
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