Mazda 3 Workshop Manual page 430

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
INSPECT BARO SENSOR CONNECTOR
FOR POOR CONNECTION
• Disconnect the BARO sensor connector.
4
• Inspect for poor connection
(damaged/pulled-out pins, corrosion, etc.).
• Is there malfunction?
INSPECT BARO SENSOR MALFUNCTiON
• Perform BARO sensor inspection.
5
(See BAROMETRIC PRESSURE (BARO)
SENSOR INSPECTION
• Is BARO sensor normal?
VERIFY BARO SENSOR SIGNAL CIRCUIT
FOR SHORT TO REFERENCE VOLTAGE
CIRCUIT
6
• Measure voltage between BARO sensor
terminal A and body ground.
• Is voltage above 4.43 V?
INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Disconnect PCM connector.
7
• Inspect for poor connection at terminals
(damaged/pulled-out pins, corrosion, etc.).
• Is there malfunction?
VERIFY BARO SENSOR GROUND CIRCUIT
FOR OPEN CIRCUIT
• Inspect for continuity following terminals:
- Between BARO sensor terminal A
8
and PCM terminal 1AG
- Between BARO sensor terminal B
and PCM terminal 1AA
• Is there continuity?
VERIFY TROUBLESHOOTING OF DTC
P2229 COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Turn the ignition switch to the ON position
9
(Engine off).
• Clear DTC from memory using WDS or
equivalent.
• Start the engine.
Downloaded from
[LF].)
https://carmanualshub.com/
Repair or replace suspected terminal, then
Yes
go to Step 9.
No Go to the next step.
Yes Go to the next step.
No Replace BARO sensor, then go to Step 9.
Repair or replace short to power supply
Yes
harness, then go to Step 9.
No Go to the next step.
Yes Repair terminal, then go to Step 9.
No Go to the next step.
Yes Go to the next step.
Repair or replace open harness, then go to
No
Step 9.
Replace PCM, then go to the next step.
Yes
(See PCM REMOVAL/INSTALLATION
[LF].)
No No concern is detected. Go to the next step.
- automotive repair manuals website