DTC P0698:00 [MZ-CD 1.6]

id0102g8268400

DTC P0698:00

Sensor reference circuit low input
DETECTION CONDITION
•  The PCM monitors the sensor reference voltage from the fuel pressure sensor, CKP sensor and CMP sensor. If the power supply voltage for the fuel pressure sensor, CKP sensor or CMP sensor is less than 4.74609 V, the PCM determines that the sensor reference voltage circuit has a malfunction.
POSSIBLE CAUSE
•  Connector or terminal malfunction
•  Short to ground in wiring harness between fuel pressure sensor terminal A and PCM terminal 2AJ
•  Short to ground in wiring harness between CKP sensor terminal C and PCM terminal 3C
•  Short to ground in wiring harness between CMP sensor terminal C and PCM terminal 3D
•  Fuel pressure sensor malfunction
•  CKP sensor malfunction
•  CMP sensor malfunction
•  PCM connector or terminal malfunction
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•   Has the FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
•  Verify related service repair information availability.
•  Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
•   If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE AND/OR DTC
•  Switch the ignition to ON (engine off).
•  Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
•  Is the other PENDING CODE/DTC also present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZ-CD 1.6].)
No
Go to the next step.
4
INSPECT FUEL PRESSURE SENSOR CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the fuel pressure sensor connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion)
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 14.
No
Go to the next step.
5
INSPECT CKP SENSOR CONNECTOR CONDITION
•  Disconnect the CKP sensor connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion)
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 14.
No
Go to the next step.
6
INSPECT CMP SENSOR CONNECTOR CONDITION
•  Disconnect the CMP sensor connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion)
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 14.
No
Go to the next step.
7
INSPECT FUEL PRESSURE SENSOR POWER CIRCUIT FOR SHORT TO GROUND
•  Disconnect the fuel pressure sensor connector.
•  Inspect for continuity between fuel pressure sensor terminal A (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to Step 14.
No
Go to the next step.
8
INSPECT CKP SENSOR POWER CIRCUIT FOR SHORT TO GROUND
•  Disconnect the CKP sensor connector.
•  Inspect for continuity between CKP sensor terminal C (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to Step 14.
No
Go to the next step.
9
INSPECT CMP SENSOR POWER CIRCUIT FOR SHORT TO GROUND
•  Disconnect the CMP sensor connector.
•  Inspect for continuity between CMP sensor terminal C (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to Step 14.
No
Go to the next step.
10
INSPECT FUEL PRESSURE SENSOR
•  Inspect the fuel pressure sensor.
•  Is there any malfunction?
Yes
Replace the common rail, then go to Step 14.
(See COMMON RAIL REMOVAL/INSTALLATION [MZ-CD 1.6].)
No
Go to the next step.
11
INSPECT CKP SENSOR
•  Inspect the CKP sensor.
•  Is there any malfunction?
Yes
Replace the CKP sensor, then go to Step 14.
(See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [MZ-CD 1.6].)
No
Go to the next step.
12
INSPECT CMP SENSOR
•  Inspect the CMP sensor.
•  Is there any malfunction?
Yes
Replace the CMP, then go to Step 14.
No
Go to the next step.
13
INSPECT PCM CONNECTOR CONDITION
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion)
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to the next step.
No
Go to the next step.
14
VERIFY THAT DTC P0698:00 TROUBLESHOOTING IS COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Run the vehicle under the FREEZE FRAME DATA stored condition.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
15
VERIFY AFTER REPAIR PROCEDURE
•  Perform the after repair procedure.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZ-CD 1.6].)
No
DTC troubleshooting completed.