Innova 3120d, Руководство пользователя, Страница: 76 / 131

Ford OBD1 Systems
CODE RETRIEVAL PROCEDURES - ENGINE TIMING CHECK
74 3120d
12. To prolong battery life, the Diagnostic Tool automatically shuts "Off"
after approximately three minutes of no button activity. The DTCs
retrieved will remain in the Diagnostic Tool's memory, and may be
viewed at any time. If the Diagnostic Tool's batteries are removed, or if
the Diagnostic Tool is re-linked to a vehicle to retrieve codes, any prior
codes in its memory are automatically cleared.
13. Follow the testing and repair procedures outlined in the vehicle's
service repair manual to correct "hard" DTCs. Codes should be
addressed and eliminated in the order they were received, erasing
and retesting after each repair is done to be sure the fault was
eliminated.
IMPORTANT: DO NOT service "Continuous Memory" codes
at this time. Before "Continuous Memory" codes can be
serviced, both the KOEO and the KOER Self-Tests must pass
(a PASS code 11 or 111 is obtained). After both of these tests
have passed, erase the vehicle's computer memory, take the
vehicle for a short drive, then repeat the KOEO Self-Test. If
any Continuous Memory faults are present, service them all
this time. Consult the vehicle's service repair manual for
servicing Continuous Memory Fault Codes.
Do not proceed to the ignition timing check procedure or the
KOER test until a PASS code (code 11 or 111) for KOEO test
is obtained.
Engine Timing Check
Before performing the KOER Self-Test, the vehicle's Ignition Base
Timing and the computer's ability to electronically control timing
advance must be checked for proper operation. Maladjustment of
ignition timing, or a problem in the advance circuit, might generate
false fault codes when performing the KOER Self-Test that would
cause the test to be invalid. Use the following procedures to check
for proper ignition timing and to verify the computer's ability to
electronically advance ignition timing.
The following "Timing Check" procedure is only
applicable to 1992 and older vehicles (excluding diesel
engines). For 1993 and newer vehicles, refer to the
vehicle's service repair manual for procedures to check
and adjust timing. DO NOT ATTEMPT TO ADJUST TIMING
ON THESE VEHICLES WITHOUT MANUFACTURER'S
SPECIFICATIONS AND PROCEDURES.
For 1992 and older vehicles, the Diagnostic Tool can be used in
combination with a timing light to check ignition timing and the vehicle
computers ability to advance ignition timing.
Check your vehicle thoroughly before performing any test. See
BEFORE YOU BEGIN on page 31 for details.
ALWAYS observe safety precautions whenever working on a
vehicle. Read and follow Safety Precautions on page 3 before
performing this test.