59
NISSAN
A/C
ORIGINAL
PENCIL MARK
ORIGINAL
PENCIL MARK
12)Start the vehicle’s engine.
13)Observe the RED and GREEN
LED’s.
• On the 300ZX Turbo only, codes 14,
and 31 should be displayed.
• Note any codes other than 14, and
31.
• On all other models code 31 should
be displayed.
• Note any codes other than 31.
14)(For 300ZX and 300ZX Turbo only. If
Maxima, go to Step 16). Drive the
vehicle at a speed of greater than 6
MPH. Warning: Get the help of
another person for this step!
15)Observe the RED and GREEN
LED’s.
• Code 31 should be displayed.
• Note any codes other than 31.
16)Apply the parking brake, and block
the drive wheels. Move the gear
shift lever to the
DRIVE position. Turn
the A/C switch from
OFF to ON to OFF (if
equipped).
17)Observe the RED and GREEN
LED’s.
• Code 44 should be displayed.
• Note any codes other than 44.
18)When all diagnostic
procedures are
complete, turn the
Diagnosis Mode
Selector fully
COUNTERCLOCKWISE, then the
ignition switch to the OFF position.
19)IMPORTANT: Turn
the Diagnosis Mode
Selector to its initial
position (setting) as
marked in Step 1 of
the test procedure.
What to do with the Trouble Codes
Look up the code definitions listed in
Section 12, “Nissan Code Meanings,”
At this point you can either:
• Have your vehicle professionally
serviced. Trouble codes indicate
problems found by the computer.
or,
• Repair the vehicle yourself using
trouble codes to help pinpoint the
problem. Refer to Section 3, “Using
Codes.” Be sure to erase any trouble
codes from the computer’s memory
after repairs are completed, as
indicated below.
Erasing Trouble Codes after Repair
20)Turn the ignition switch to the ON
position, but do not start the
engine.
21)Turn the Diagnosis
Mode Selector fully
CLOCKWISE, and wait
at least 3 seconds.
22)Turn the Diagnosis
Mode Selector fully
COUNTERCLOCK-
WISE, and wait at
least 3 seconds.
23)Turn the ignition switch to the OFF
position.
Trouble Codes are now erased!
24)IMPORTANT: Turn
the Diagnosis Mode
Selector to its initial
position (setting) as
marked in Step 1 of
the test procedure.
NOTE: When reinstalling the computer,
be careful to route all wiring to its
original position.
Summary of Contents for Code Scanner CP9025
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