Mazda 6 2002 - Page 260

ON-BOARD DIAGNOSTIC
F163
F
Diagnostic procedure
POSSIBLE
CAUSE
• VAD solenoid valve malfunction.
• Connector or terminal malfunction.
• Short to ground in wiring between VAD solenoid valve terminal B and PCM terminal 4C
• Open circuit in wiring between main relay and VAD solenoid valve terminal A
• Open circuit in wiring between VAD solenoid valve terminal B and PCM terminal 4C
• Short to power in wiring between VAD solenoid valve terminal B and PCM terminal 4C
• PCM malfunction
STEP INSPECTION ACTION
1 PERFORM DTC CONFIRMATION PROCEDURE
• Perform DTC CONFIRMATION PROCEDURE.
(See F66 DTC CONFIRMATION
PROCEDURE.)
• Is same DTC present?
Yes Go to next step.
No Intermittent concern exists. Go to INTERMITTENT
CONCERN TROUBLESHOOTING procedure.
(See F227 INTERMITTENT CONCERN
TROUBLESHOOTING.)
2 CLASSIFY POWER CIRCUIT OR CONTROL
CIRCUIT MALFUNCTION
• Is the same DTC and P0102, P0103, P0403,
P0661, P0662, P2009 or P2010 present?
Yes Malfunction at power circuit, then go to next step
No Malfunction at VAD solenoid valve or control circuit, then go
to Step 5
3 INSPECT POOR CONNECTION OF VAD
SOLENOID VALVE CONNECTOR
• Disconnect VAD solenoid valve connector.
• Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
• Are there any malfunctions?
Yes Repair terminals, then go to Step 11.
No Go to next step.
4 INSPECT VAD SOLENOID VALVE POWER
CIRCUIT FOR OPEN CIRCUIT
• Turn ignition switch to ON (Engine OFF).
• Measure voltage between VAD solenoid valve
connector terminal A and body ground.
• Is voltage B+?
Yes Inspect VAD solenoid valve.
• If there is a malfunction, replace VAD solenoid valve,
then go to Step 11
• If there is no malfunction, go to Step 12
No Repair or replace VAD solenoid valve power circuit for
open, then Go to Step 11.
5 INSPECT POOR CONNECTION OF VAD
SOLENOID VALVE CONNECTOR
• Disconnect connector.
• Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
• Are there any malfunctions?
Yes Repair or replace terminals, then go to Step 11.
No Go to next step.
6 INSPECT VAD SOLENOID VALVE
• Perform VAD solenoid valve inspection.
(See F12 VARIABLE AIR DUCT (VAD)
SHUTTER VALVE INSPECTION (L3).)
• Is clutch switch okay?
Yes Go to Step 11.
No Replace VAD solenoid valve, then go to Step 11.
DTC P1410 Variable air duct (VAD) control system circuit malfunction