Mazda 2002 6 Workshop Manual page 467

DTC P0500 Vehicle speed sensor (VSS) circuit malfunction
Diagnostic procedure
STEP
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
• Has FREEZE FRAME PID DATA been
recorded?
2 VERIFY RELATED SERVICE INFORMATION
AVAILABILITY
• Check for related Service Bulletins availability.
• Is any related repair Information available?
3 INSPECT VSS CONNECTOR FOR POOR
CONNECTION
• Turn ignition key to OFF.
• Disconnect VSS connector.
• Check for poor connection (damaged/pulled-
out terminals, corrosion, etc.).
• Is connection okay?
4 INSPECT VSS POWER CIRCUIT FOR OPEN
CIRCUIT
• Verify that VSS connector is disconnected.
• Turn ignition key to ON (Engine OFF).
• Check voltage between VSS terminal A
(harness-side) and ground
• Is voltage reading B+?
5 INSPECT VSS GROUND CIRCUIT FOR OPEN
• Turn ignition key to OFF.
• Verify that VSS connector is disconnected.
• Check for continuity between VSS terminal C
(harness-side) and ground
• Is there continuity?
K–56
ON-BOARD DIAGNOSTIC
INSPECTION
Yes Go to next step.
No Record FREEZE FRAME PID DATA on repair order, then
go to next step.
Yes Perform repair or diagnosis according to available repair
Information.
• If vehicle is not repaired, go to next step.
No Go to next step.
Yes Go to next step.
No Repair or replace pin or connector, then go to Step 10.
Yes Go to next step.
No Repair or replace harness, then go to Step 10.
Yes Go to next step.
No Repair or replace harness, then go to Step 10.
ACTION