Mazda 2002 6 Workshop Manual page 305

STEP
4 INSPECT BARO SENSOR MALFUNCTiON
• Perform BARO sensor inspection.
(See F–60 BAROMETRIC PRESSURE
(BARO) SENSOR
• Is BARO sensor okay?
5 VERIFY BARO SENSOR SIGNAL CIRCUIT FOR
SHORT TO REFERENCE VOLTAGE CIRCUIT
• Measure voltage between BARO sensor
terminal A and body ground.
• Is voltage above 4.92 V?
6 INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Disconnect PCM connector.
• Inspect for poor connection at terminal 2H
(damaged/pulled-out pins, corrosion, etc.).
• Is there malfunction?
7 VERIFY BARO SENSOR GROUND CIRCUIT
FOR OPEN CIRCUIT
• Inspect for continuity following terminals:
— Between BARO sensor terminal A and PCM
terminal 1G
— Between BARO sensor terminal B and PCM
terminal 2H
• Is there continuity?
8 VERIFY TROUBLESHOOTING OF DTC P2229
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Turn ignition key to ON (Engine OFF).
• Clear DTC from 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
ON-BOARD DIAGNOSTIC
INSPECTION
INSPECTION.)
SELF-TEST.)
PROCEDURE.)
Yes Go to next step.
No Replace BARO sensor, then go to Step 8.
Yes Repair or replace short to power harness, 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 open harness, then go to Step 8.
Yes Replace PCM, then go to next step.
(See F–43 PCM REMOVAL/INSTALLATION.)
No No concern is detected. Go to next step.
Yes Go to applicable DTC troubleshooting.
(See F–67 DTC TABLE.)
No Troubleshooting completed.
ACTION
F–175
F