IQ DISPLAY MODULE (IQDM) AND IQDM-P
DIAGNOSTICS: EXCEL SYSTEM WITH ERIC
CHARGING
Test Procedures
26
TROUBLESHOOTING GUIDE
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
Handset malfunction
Disconnect the IQDM cord from the vehicle.
Wait a few seconds and reconnect the handset
to the vehicle
Vehicle batteries – loose terminals or corrosion
See Section 30 – Batteries: Electric Vehicle
Vehicle batteries – improperly wired
See Section 30 – Batteries: Electric Vehicle
Vehicle batteries – batteries failed
See Section 30 – Batteries: Electric Vehicle
Vehicle batteries – batteries not fully charged
See Section 30 – Batteries: Electric Vehicle
Handset is “locked-up” – buttons do not
respond
Speed controller malfunction
Troubleshooting: with ERIC Charging.
TEST PROCEDURES
The following test procedures enable the technician to test the IQDM and IQDM-P handsets and the components of the
Excel System vehicle that are related to the proper operation of the handset.
WARNING
• If wires are removed or replaced, make sure wiring and wire harness is properly routed and secured.
Failure to properly route and secure wiring could result in vehicle malfunction, property damage,
personal injury, or death.
Index of Test Procedures
1 – Handset Cord
2 – Handset Cord Adaptor
3 – IQDM Ports
TEST PROCEDURE 1 – Handset Cord
See General Warnings on page 1-2.
1.
Using a multimeter set for 200 ohms, place the red (+) probe into one of the terminals on the end of the cord with
the square plug.
2.
Place the black (–) probe on each of the pins, one at a time, on the plug on the other end of the cord.
3.
The multimeter should indicate continuity on only one pin. If any other reading is obtained, the cord must be
replaced.
4.
Repeat the procedure three more times, each time with the red (+) probe inserted into a different terminal on
the end of the cord with the square plug.
TEST PROCEDURE 2 – Handset Cord Adaptor
See General Warnings on page 1-2.
2014 Precedent
®
Golf Car Maintenance and Service Manual
Page 26-23
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