Mazda 6 2002, Workshop Manual

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K–86
ON-BOARD DIAGNOSTIC
Diagnostic procedure
STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
•
Has FREEZE FRAME PID DATA been
recorded?
Yes Go to next step.
No Record FREEZE FRAME PID DATA on repair order, then
go to next step.
2 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
•
Check for related Service Bulletins availability.
•
Is any related repair information available?
Yes Perform repair or diagnosis according to available repair
information.
•
If vehicle is not repaired, go to next step.
No Go to next step.
3 INSPECT ATX CONNECTOR FOR POOR
CONNECTION
•
Turn ignition key to OFF.
•
Disconnect ATX connector.
•
Check for poor connection (damaged/pulled-
out terminals, corrosion, etc.).
•
Is connection okay?
Yes Go to next step.
No Repair or replace connector and/or terminals, then go to
Step 11.
4 INSPECT RESISTANCE
•
Check resistance between ATX connector
terminal A (transaxle case side) and body
ground.
•
Is resistance within 1.0—4.2 ohms ?
(See K–26 Resistance Inspection (On-Vehicle
Inspection) .)
Yes Go to Step 7.
No Go to next step.
5 INSPECT SHIFT SOLENOID A CONNECTOR
FOR POOR CONNECTION
•
Disconnect shift solenoid A connector.
•
Check for poor connection (damaged/pulled-
out terminals, corrosion, etc.).
•
Is connection okay?
Yes Go to next step.
No Repair or replace connector and/or terminal, then go to
Step 11.
6 INSPECT RESISTANCE
•
Inspect resistance between shift solenoid A
terminals A and B (part-side).
•
Is resistance within 1.0—4.2 ohms ?
(See K–27 Resistance Inspection (Off-Vehicle
Inspection) .)
Yes Replace solenoid harness, then go to Step 11.
No Verify shift solenoid A installation.
•
If solenoid installed correctly, replace solenoid, then go
to Step 11.
(See K–28 SOLENOID VALVE REMOVAL/
INSTALLATION .)
7 INSPECT PCM CONNECTOR FOR POOR
CONNECTION
•
Disconnect PCM connector.
•
Check for poor connection (damaged/pulled-
out terminals, corrosion, etc.).
•
Is connection okay?
Yes Go to next step.
No Repair or replace connector and/or terminals, then go to
Step 11.
8 INSPECT ATX CONNECTOR CIRCUIT FOR
OPEN
•
Inspect for continuity between PCM terminal
4AB (harness-side) and ATX connector
terminal A (vehicle harness-side).
•
Is there continuity between terminals?
Yes Go to next step.
No Repair or replace harness, then go to Step 11.
9 INSPECT ATX CONNECTOR CIRCUIT FOR
SHORT TO POWER
•
Turn ignition key to ON (engine OFF).
•
Inspect voltage at ATX connector terminal A
(vehicle harness-side).
•
Is voltage 0 V ?
Yes Go to next step.
No Repair or replace harness, then go to Step 11.
10 INSPECT PCM CIRCUIT FOR SHORT TO
GROUND
•
Turn ignition key to OFF.
•
Inspect for continuity between PCM terminal
4AB (harness-side) and body ground.
•
Is there continuity?
Yes Repair or replace harness, then go to Step 11.
No Go to next step.