259
M4.8-1055-049
03 Rev. 10/09
ELECTRICAL
Event Code 700
Event Code 700
ACCESS 7 Memory Hardware Failure.
Microcontroller internal to ACCESS 7 has experienced
a failure in reading or writing to ACCESS 7 internal
memory.
Step 1: Power down truck, then power-up.
• If: Issue continues.
– Then replace ACCESS 7.
Event Code 701
Proportional Solenoid (SPA) Open Coil Circuit.
This fault is logged if an open circuit exists between
SPA coil and driver CA230-2.
Step 1: Drive SPA coil through Analyzer menu A4.4.2
in display and measure voltage across SPA with wiring
connected. Normal A4 test output voltage at coil is ap-
proximately 7 Vdc. Coil resistance is approximately 29
ohms.
• If: 7 Vdc.
– Then SPA is open, replace SPA.
• If: 0 Vdc.
– Then a positive or negative is missing; go to
Step 2.
Step 2: Drive SPA through Analyzer menu A4.4.2 in
display and measure voltage from +BV to SPA nega-
tive with wiring connected.
• If: 0 Vdc.
– Then negative is missing; proceed to Step 3.
• If: +BV.
– Then positive is missing; proceed to Step 4.
Step 3: Drive SPA through Analyzer menu A4.4.2 in
display and measure voltage between CA230-2 (-) and
+BV with wiring connected.
• If: +BV.
– Then wiring is open from CA230-2 to SPA.
• If: 0 Vdc.
– Then open is internal, replace ACCESS 7.
Step 4: Drive SPA through Analyzer menu A4.4.2 in
display. Measure voltage between CA230-12 (+) and
BNEG.
• If: 7 Vdc.
– Then wiring is open from CA230-12 and SPA
(+).
• If: 0 Vdc.
– Then open is internal, replace ACCESS 7.
Figure 16036
Crown 2007 PF15665-49 Rev. 10/09
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