Mazda 6 2002 Workshop Manual page 186

DTC P0108 MAP sensor circuit high input
Diagnostic procedure
STEP
1 PERFORM DTC CONFIRMATION PROCEDURE
• Perform DTC CONFIRMATION PROCEDURE.
(See F–66 DTC CONFIRMATION
PROCEDURE.)
• Is same DTC present?
2 INSPECT CONNECTION OF MAP SENSOR
CONNECTOR
• Turn ignition key to OFF.
• Verify that the MAP sensor connector is
connected securely.
• Is connection okay?
3 INSPECT POOR CONNECTION OF MAP
SENSOR CONNECTOR
• Disconnect the MAP sensor connector.
• Inspect for poor connection (damaged, pulled-
out pins, corrosion, etc.).
• Is there any malfunction?
4 VERIFY MAP SENSOR GROUND CIRCUIT FOR
OPEN CIRCUIT
• Inspect continuity between MAP sensor
terminal A (harness-side) and body ground.
• Is there continuity?
5 INSPECT PCM CONNECTOR
• Disconnect PCM connector.
• Inspect for poor connection at terminal 2H
(damaged, pulled-out pins, corrosion, etc.).
• Is there any malfunction?
ON-BOARD DIAGNOSTIC
INSPECTION
Yes Go to net step.
No Intermittent concern eists. Go to INTERMITTENT
CONCERN TROUBLESHOOTING procedure.
(See F–227 INTERMITTENT CONCERN
TROUBLESHOOTING.)
Yes Go to net step.
No Reconnect the connector, then go to Step 8.
Yes Repair or replace suspected terminal, then go to Step 8.
No Go to net step.
Yes Go to net step.
No Inspect for open circuit between PCM terminal 2H
(harness-side) and MAP sensor terminal A (harness-side).
Repair or replace suspected harness, then go to Step 8.
Yes Repair terminal, then go to Step 8.
No Go to net step.
ACTION
F–89
F