Mazda MX-6 1998, Workshop Manual

Page: 211 / 1282

TROUBLESHOOTING [ENGINE CONTROL KL]
After Repair Procedure
1. After repairs have been made, connect SST (NGS
tester) to the Data Link Connector.
2. Select Clear Codes function in GENERIC OBD II
FUNCTIONS and clear DTCs.
W6U101WKH
3. Perform Self-Test to ensure customer’s concern
has been resolved.
PID/DATA Monitor and Record Procedure
1. Perform the “New generation star (NGS) tester
hook-up procedure."
2. Perform step 1 through step 9 from the “Reading
DTCs procedure” .
3. Turn key on or engine running.
4. Move the cursor to
PID/DATA MONITOR AND
RECORD. Press the trigger.
I I
I DIAGNOSTIC TEST MODES_______________ I
PID.DATA MONITOR AND RECORD
ACTIVE COMMAND MODES
DIAGNOSTIC TROUBLE CODE LIBRARY
SELECT ITEM ANO PRESS TRIGGER TO START
W6U101WKB
5. Move cursor to PID values to view. Press trigger.
P C M 0 2 ACCS
AIRM
CCS
ACP ARCF
*CP P/PN P
A C P V BARO
DPFEGR
T O TA L -02 AIRA
BLWMTR DR IVEC T
AIRF *BOO
PRLM P
Playback of Stored PIDs Procedure
Note
• Look for abnormal behavior or values that are
clearly incorrect. Inspect the signals for abrupt
or unexpected changes.
• Look for agreement in related signals.
• Make sure signals act in proper sequence.
1. Select VIEW RECORDER AREAS.
2. Select a view area.
3. Select up to the four PIDs to review in the table
format or two PIDs to review in the graph mode.
4. Table format: Scroll through the PID data while
analyzing the information. Look for sudden drops
or spikes in the values.
For example:
Notice the major jump in the TP voltage while
scrolling through the information. This example
would require a smooth and progressive throttle
pedal travel during a key ON and engine OFF
mode.
TIME ECT TP MAF
-0.8
182 55.5 10.8
0.0 183
99.3
65.4
11.3
+0.2
184 11.5
SEC
°F
/
%
G/S
SUDDEN SPIKE — POSSIBLE FAULT
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5. Graph format: Scroll through the PID data while
analyzing the information. Look for sudden drops
or spikes in the linear lines showing the
transformation of values to the line graph.
NON LINEAR —
POSSIBLE FAULT IN SENSOR/CIRCUIT
W6U101WKE
W6U101WKC
6. Select START to begin.
7. When ready to capture and store the select PIDs,
press trigger button.
8. Press trigger again when ready to save
information.
9. The information is now located in the main
recording area. Store to a viewing area before
starting another recording or the data will be
overwritten.
Output Test Mode Procedure
1. Perform the “New generation star (NGS) tester
hook-up procedure.”
2. Perform step 1 through step 9 from the “Reading
DTCs procedure”.
3. Turn key on.
4. Move the cursor to
ACTIVE COMMAND MODES.
Press the trigger key to enter this selection.
0 1 -0 1 B -5