Dtc P0662 - Mazda 2002 6 Workshop Manual

STEP
5 INSPECT VIS CONTROL SOLENOID VALVE
CONTROL CIRCUIT FOR SHORT TO GROUND
• Inspect continuity between VIS control
solenoid valve terminal A (harness-side) and
body ground.
• Is there continuity?
6 INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Disconnect PCM connector.
• Inspect for poor connection at terminal 4R.
(damaged/pulled-out pins, corrosion, etc.).
• Is there malfunction?
7 INSPECT VIS CONTROL SOLENOID VALVE
CONTROL CIRCUIT FOR OPEN
• Inspect for continuity between VIS control
solenoid valve terminal B (harness-side) and
PCM terminal 4R (harness-side).
• Is there continuity?
8 VERIFY TROUBLESHOOTING OF DTC P0661
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Turn ignition key to ON (Engine OFF).
• Clear DTC from PCM memory using WDS or
equivalent.
• Perform KOEO/KOER self-test.
(See F–66 KOEO/KOER
• Is same DTC present?
9 VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
(See F–66 AFTER REPAIR
• Is there any DTC present?
End Of Sie

DTC P0662

DTC P0662 Variable intake-air system (VIS) control solenoid valve circuit high input
• PCM monitors VIS control solenoid valve control signal at PCM terminal 4R. If PCM turns VIS control
DETECTION
solenoid valve on but voltage at PCM terminal 4R still remains high, PCM determines that VIS control
CONDITION
solenoid valve circuit has malfunction.
• VIS control solenoid valve malfunction
• Short to power circuit between VIS control solenoid valve terminal B and PCM terminal 4R
POSSIBLE
• Shorted VIS control solenoid valve or PCM connector
CAUSE
• PCM malfunction
F–154
ON-BOARD DIAGNOSTIC
INSPECTION
SELF-TEST.)
PROCEDURE.)
Yes Repair or replace harness for short to ground, then go to
Step 8.
No Go to next step.
Yes Repair terminal, then go to Step 8.
No Go to next step.
Yes Go to next step.
No Repair or replace harness for open, then go to next step.
Yes Replace PCM, then go to next step.
(See F–43 PCM REMOVAL/INSTALLATION.)
No Go to next step.
Yes Go to applicable DTC troubleshooting.
(See F–67 DTC TABLE.)
No Troubleshooting completed.
ACTION
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