P1757
DTC P1757 EMC PWM OUT OF RANGECOMPONENT LOCATION
Refer to DTC P1755. P1755
GENERAL DESCRIPTION
Refer to DTC P1755. P1755
DTC DESCRIPTION
Refer to DTC P1755. P1755
DTC DETECTING CONDITION
SCHEMATIC DIAGRAM
Refer to DTC P1755. P1755
SIGNAL WAVEFORM AND DATA
Refer to DTC P1755. P1755
MONITOR DTC STATUS
1. Connect Scantool to Data Link Connector (DLC).
2. Warm up the engine to normal operating temperature.
3. Monitor DTC (Diagnostics Trouble Code) on the Scantool.
4. Is the same DTC displayed again?
YES
- Go to "inspection/Repair" procedure.
NO
- Fault is intermittent caused by poor contact in the sensor's and/or "4WD-ECM"s connector or was repaired and "4WD-ECM" memory was not cleared.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Repair or replace as necessary and go to "Verification of vehicle Repair procedure
TERMINAL AND CONNECTOR INSPECTION
Refer to DTC P1755. P1755
SIGNAL CIRCUIT (+) INSPECTION
SIGNAL CIRCUIT INSPECTION-EMC (-)
1. IG KEY: OFF.
2. 4WD ECM, EMC: Connect.
3. IG KEY: ON, Engine: ON.
4. Monitor signal waveform between EMC (-) terminal of 4WD-ECM harness connector and chassis ground.
5. Start and drive vehicle in gear and maintain vehicle speed is approximately 10km/h or less (6 mph or less)
Specification: Signal Waveform & Data
CAUTION:
The above value is only for reference.
The actual value may differ from it according to various engine condition.
6. Is "Signal display" near the specified value?
YES
- Fault is intermittent caused by poor contact in the sensor's and/or "4WD-ECM"s connector or was repaired and "4WD-ECM" memory was not cleared.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Repair or replace as necessary and go to "Verification of vehicle Repair" procedure.
NO
- Go to "Signal circuit open inspection-EMC (+)" procedure.
SIGNAL CIRCUIT OPEN INSPECTION-EMC (+)
1. Ignition OFF.
2. 4WD ECM, EMC connector: Disconnect.
3. Measure resistance between EMC (+) of EMC harness connector and EMC (+) of 4WD-ECM harness connector.
Specification: 1 Ohms below
CAUTION:
The above value Is only for reference.
The actual value may differ from it according to various engine condition.
4. Is "resistance" display near the specified value?
YES
- Go to "Signal circuit open inspection-EMC (-)" procedure.
NO
- Check for open circuit of EMC (+) control harness.
- Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
SIGNAL CIRCUIT (-) INSPECTION
SIGNAL CIRCUIT OPEN INSPECTION-EMC (-)
1. Ignition OFF.
2. 4WD ECM, EMC connector: Disconnect.
3. Measure resistance between EMC (-) of EMC harness connector and EMC (-) of 4WD-ECM harness connector.
Specification: 1 Ohms below
CAUTION:
The above value is only for reference.
The actual value may differ from it according to various engine condition.
4. Is "resistance" display near the specified value?
YES
- Go to "Signal circuit short inspection-EMC (+,-)" procedure.
NO
- Check for open circuit of EMC (-) ground harness.
- Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
SIGNAL CIRCUIT INSPECTION
SIGNAL CIRCUIT SHORT INSPECTION-EMC (+,-)
1. Ignition OFF.
2. 4WD ECM: Connect, EMC: Disconnect.
3. Measure resistance between EMC (+) terminal of EMC harness connector and EMC (; terminal of EMC harness connector.
Specification: Infinity
CAUTION:
The above value is only for reference.
The actual value may differ from it according to various engine condition.
4. Is "resistance" display near the specified value?
YES
- Go to "Component inspection" procedure.
NO
- Check for short in EMC harness.
- Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
COMPONENT INSPECTION
Refer to DTC P1755. P1755
VERIFICATION OF VEHICLE REPAIR
Refer to DTC P1755. P1755