Mazda 2002 6 Workshop Manual page 216

DTC P0107 MAP sensor circuit low input
Diagnostic procedure
STEP
1 PERFORM DTC CONFIRMATION PROCEDURE
• Perform DTC CONFIRMATION PROCEDURE.
(See F–66 DTC CONFIRMATION
PROCEDURE.)
• Is same DTC present?
2 VERIFY MAP PID WHEN MAP SENSOR
CONNECTOR IS DISCONNECTED
• Disconnect MAP sensor connector.
• Is voltage above 4.9 V?
3 INSPECT POWER SUPPLY CIRCUIT VOLTAGE
AT MAP SENSOR CONNECTOR
Note
• If DTC P0122 and P2228 are also retrieved
with P0107, go to CONSTANT VOLTAGE
troubleshooting procedure.
• Turn ignition key to ON (Engine OFF).
• Measure voltage between MAP sensor
terminal C (harness-side) and body ground.
• Is voltage within 4.5—5.5 V?
4 INSPECT MAP SENSOR SIGNAL CIRCUIT FOR
SHORT TO GROUND
• Turn ignition key to OFF.
• Disconnect PCM connector.
• Inspect continuity between MAP sensor
terminal D (harness-side) and body ground.
• Is there continuity?
ON-BOARD DIAGNOSTIC
INSPECTION
Yes Go to next step.
No Intermittent concern exists. Go to INTERMITTENT
CONCERN TROUBLESHOOTING procedure.
(See F–227 INTERMITTENT CONCERN
TROUBLESHOOTING.)
Yes Go to next step.
No Go to step 4.
Yes Check for poor connection of MAP sensor terminal C
(harness-side).
• Repair or replace terminal if necessary.
• If okay, replace MAP sensor.
Then go to Step 6.
No Check for open circuit between PCM terminal 2K (harness-
side) and MAP sensor terminal C (harness-side).
Repair or replace suspected harness, then go to Step 6.
Yes Repair or replace suspected harness, then go to Step 6.
No Go to next step.
ACTION
F–87
F