Mazda 626 Station Wagon, Workshop Manual

Page: 55 / 577

ON-BOARD DIAGNOSTIC
• Make sure signals act in proper sequence.
1 . Select VIEW RECORDER AREAS.
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VEHICLE & EN G IN E SELECTION
D IAG NO STIC DATA LINK
V IEW R E C O R D E R AREAS
DIGITAL M EA SU R EM EN T SYSTEM
NEW G E N E R A TIO N STAR SET UP ^
S E L E C T IT E M AN D P R E S S T R IG G E R TO S T A R T
2. Select up to the four PIDs to review in the table
format or two PIDs to review in the graph mode.
(1) Table format: Scroll through the PID data while
analyzing the information. Look for sudden
drops or peaks in the values.
TIM E E C T
M A F V TP V
II
- 0 . 8 182
1.7
0 8
0.0
183 1.8 ,4 .3 I
+ 0.2 184 1.8
/
1.0 n
SEC
° F
V /
v II
SUDDEN PEAK—POSSIBLE FAULT
(2) 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
Diagnostic support procedure
1. Perform the NGS Tester Hook-up Procedure.
2. Perform Steps 1 through 15 from the DTC
Reading Procedure. (See F1-31 Using the NGS
tester.)
3. Move the cursor to DIAGNOSTIC SUPPORT
PROCEDURE.
4. Press the TRIGGER key to enter this selection.
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DIAG NO STIC T EST MOOES
PID/DATA M O NITO R AND REC ORD
SIM ULATIO N TEST
D IA G N O STIC SU P PO R T PRO C EDUR E
DIA G N O STIC TR O U B LE C O D E LIB R A R Y
i |
I S E L E C T ITEM ANO P R E S S T R I GOER TO START
5. Move the cursor to ALL TEST or SINGLE TEST.
6. Press the TRIGGER key.
Note
• ALL TEST inspects each item according to an
established programmed order. With SINGLE
TEST, enable to select and inspect any test
item in any order, one at a time.
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ALL TE S T
SINGLE T EST
SE L E C T IT E M AN D P R E S S T R IG G E R TO S T A R T
7. Follow the instructions displayed on the NGS
tester.
8. Press the TRIGGER key.
Note
• To skip a test item, press OMIT.
• Before performing the test, the basic condition
on the test vehicle must be set-up in order to
get exact data. Press
BASIC to view the basic
condition instruction screen.
• If the screen shows PASSED, the system
operates correctly.
• If the screen shows FAULTY, the system
operates incorrectly.
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o m i t
| I f x i r I
b a s i c
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F1-34