Mazda 626 Station Wagon, Workshop Manual

Page: 117 / 577

ON-BOARD DIAGNOSTIC
STEP INSPECTION ACTION
4 CLASSIFY GENERATOR MALFUNCTION OR
OTHER MALFUNCTION
• Turn ignition key to ON (Engine OFF).
• Measure voltage between generator terminal
D (harness-side) and body ground.
• Is voltage B+?
Yes Go to next step.
No Malfunction at the generator.
Go to Step 7.
5 INSPECT POOR CONNECTION OF PCM
CONNECTOR
• Turn ignition key to OFF.
• Disconnect PCM connector.
• Check for poor connection (damaged,
pulled-out terminals, corrosion, etc.).
• Are there any malfunctions?
Yes Repair or replace terminals, then go to Step 8.
No
Go to next step.
6 INSPECT GENERATOR CONTROL CIRCUIT
FOR SHORT TO POWER
• Turn ignition key to ON (Engine OFF).
Yes Repair or replace harness, then go to Step 8.
• Measure voltage between generator terminal
D (harness-side) and body ground.
• Is voltage B+?
No Go to Step 8.
7 INSPECT GENERATOR CONTROL TERMINAL
FOR SHORT TO POWER
• Measure resistance between generator
terminal D (part-side) and body ground.
• Is voltage B+?
Yes Repair or replace generator, then go to next step.
No Go to next step.
8 VERIFY TROUBLESHOOTING OF DTC P1633
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Turn ignition key to OFF then ON (Engine
OFF).
• Is same DTC present?
Yes Replace PCM, then go to next step.
No Go to next step.
9 VERIFY AFTER REPAIR PROCEDURE
• Perform “After Repair Procedure.”
(See F1-36 AFTER REPAIR PROCEDURE)
• Are any DTCs present?
Yes Go to applicable DTC inspection.
(See F1-37 DTC TABLE)
No Troubleshooting completed.
F1-96