Mazda 2002 6 Workshop Manual page 262

DTC P0340 Camshaft position (CMP) sensor circuit malfunction
Diagnostic procedure
STEP
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
• Has FREEZE FRAME DATA been recorded?
2 VERIFY RELATED SERVICE INFORMATION
AVAILABILITY
• Check for related Service Information
availability.
• Is any related Service Information available?
3 VERIFY CMP SENSOR VOLTAGE
• Disconnect CMP sensor connector.
• Connect voltmeter between CMP sensor
connector terminals A and B (sensor-side).
• Inspect the voltage in AC range while cranking
the engine.
• Is any voltage reading?
4 INSPECT POOR CONNECTION OF CMP
SENSOR CONNECTOR
• Verify that the CMP sensor connector is
connected securely.
• Is connector okay?
5 INSPECT CMP CIRCUIT FOR SHORT TO
POWER
• Turn ignition key OFF.
• Disconnect CMP sensor connector.
• Turn ignition key ON (Engine OFF)
• Measure voltage at CMP sensor terminals A
and B.
• Is any voltage reading?
End Of Sie
ON-BOARD DIAGNOSTIC
F – 1 3 2 F UEL AND EMISSION CONTROL SYSTEMS
INSPECTION
ON-BOARD DIAGNOSTIC
Yes Go to next s
tep.
No Record FREEZE FRAME DATA on repair order, then go to
next step.
Yes Perform repair or diagnosis according to available Service
Information.
• If vehicle is not repaired, go to next step.
No Go to next step.
Yes Go to next step.
No Go to step 10.
Yes Go to next step.
No Reconnect the connector, then go to Step 15.
Yes Repair or replace suspected harness, then go to Step 15.
No Go to next step.
ACTION
F–132–1
F