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IQ DISPLAY MODULE (IQDM) SERIES 2 AND IQDM-P DIAGNOSTICS
Test Procedures
Page 12-20
2008-2011 IQ Plus Electric Vehicle Maintenance and Service Supplement
12
TEST PROCEDURES
The following test procedures enable the technician to test the IQDM and IQDM-P Series 2 handsets and the
components of the IQ Plus vehicle that are related to the proper operation of the handset. This diagnostics
section does not contain detailed information for troubleshooting the vehicle. Refer to the vehicle mainte-
nance and service manual for detailed vehicle troubleshooting and service procedures.
ý
WARNING
• If wires are removed or replaced, make sure wiring and wire harness is properly routed and
INDEX OF TEST PROCEDURES
TEST PROCEDURE 1 – HANDSET CORD
See General Warning, Section 10, Page 10-1.
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 Warning, Section 10, Page 10-1.
Handset is “locked-up” – buttons do
not respond
Vehicle batteries – loose terminals or
corrosion
Vehicle batteries – improperly wired
Vehicle batteries – batteries failed
Vehicle batteries – batteries not fully
charged
See Section 11 – Electrical System and
Testing.
TROUBLESHOOTING GUIDE
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION