Mazda 626 Station Wagon, Workshop Manual

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ON-BOARD DIAGNOSTIC
Diagnostic procedure
STEP INSPECTION ACTION
1 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Check for related Service Information
availability.
• Is any related Service 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.
2
CLICK TEST OF SHIFT SOLENOID C
• Turn ignition key to OFF.
• Connect NGS tester to DLC.
• Turn ignition key to ON (engine OFF).
• Access SHIFT C PID using NGS tester.
• Verify the click sound of shift solenoid C
using NGS simulation function.
• Is there a click sound?
(See K2-134 SIMULATION TEST.)
Yes
Go to intermittent concern troubleshooting procedure.
(See F1-142 INTERMITTENT CONCERN.)
No Go to next step.
3 INSPECT POOR CONNECTION OF ATX
CONNECTOR
• 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.
i
No Repair or replace connector and/or terminals, then go to I
Step 11. '
4 INSPECT RESISTANCE
• Inspect resistance between ATX connector
terminal G (transaxle case side) and body
ground.
• Is resistance w ithin 1.0—4.2 £2?
(See K2-38 SOLENOID VALVES INSPECTION,
Inspection of Resistance (On-vehicle).)
Yes Go to Step 7.
No Go to next step.
5
INSPECT POOR CONNECTION OF SHIFT
SOLENOID C CONNECTOR
• Disconnect shift solenoid C 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.
j
6 INSPECT RESISTANCE
• Inspect resistance between shift solenoid C
terminals A and B (part-side).
• Is resistance w ithin 1.0—4.2 il?
(See K2-38 SOLENOID VALVES INSPECTION,
Inspection of Resistance (Off-vehicle).)
Yes Replace solenoid harness, then go to Step 11.
No Verify shift solenoid C installation.
• If solenoid installed correctly, replace solenoid, then
go to Step 11.
(See K2-40 SOLENOID VALVES |
REMOVAL/INSTALLATION.)
7 INSPECT POOR CONNECTION OF PCM
CONNECTOR
• 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
102 (harness-side) and ATX connector
terminal G (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).
• Check voltage at ATX connector terminal G
(vehicle harness-side).
• Is voltage 0 V?
Yes Go to next step.
No Repair or replace harness, then go to Step 11.
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1
K2-116