SECTION 12 — ELECTRICAL SYSTEM TROUBLESHOOTING:
IQ PLUS ELECTRIC VEHICLES
12
Electrical System Troubleshooting: IQ Plus Electric Vehicles
DANGER
• See General Warnings on page 1-1.
WARNING
• See General Warnings on page 1-1.
GENERAL INFORMATION
The IQ Plus vehicle uses a 48-volt electrical system with a shunt-wound, 3.7 hp motor that is powered by eight 6-Volt,
lead-acid batteries and charged by a high-frequency charger. Several additional features include the following:
ACCESSORIES
For powered accessories that need to be controlled by the key switch, use the 12-volt power strip located under
the cowl.
CHARGE INDICATOR LIGHT
IQ Plus vehicles with QuiQ Charger system feature a dash mounted charge indicator light (below the steering column)
that serves two functions: 1) Battery low state of charge warning, and 2) Charging confirmation. The charge indicator
light is controlled by pin 11 of the controller.
Battery Low State of Charge Warning
• The light comes on and remains solid when the battery state of charge falls below 20%.
• The light begins flashing when the battery state of charge falls below 10%.
Charging Confirmation
• The light will flash three times and the reverse buzzer simultaneously will sound three times to indicate a battery
charging session has begun.
See following NOTE.
NOTE:
The number of flashes and beeps can vary depending on the Beep Option setting.
KEY DIFFERENCES: IQ PLUS WITH QUIQ CHARGER VS. IQ PLUS CHARGER
• Utilizes the 1520L-5550 controller (gold label) instead of the 1520-5501 (silver label).
• The onboard computer (OBC) is no longer used.
• New main wire harness that uses a 10k ohm pull-up resistor for the charger interlock circuit.
• New B- wire assembly, which replaces the one integral to the onboard computer (OBC). With the OBC gone, the
new B- wire assembly is needed to connect the B- terminal of the controller to the negative (-) post of battery no. 8
(8 x 6-Volt battery set).
• New battery charge indicator light in the instrument panel. This light is an LED and is used to confirm when a charge
cycle begins and when the battery pack has reached a low state of charge.
• A new controller is used that has data collecting functions previously performed by the OBC. Pin 22 in the 24-pin
connector is now utilized to operate the charge indicator light in the instrument panel.
2017 Carryall 500 and 700 Maintenance and Service Manual
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