DTC P0715 [FN4A-EL]


DTC P0715	Input/turbine speed sensor circuit malfunction
DETECTION CONDITION	• When all conditions below are satisfied and 0.7 s or more have passed. - D, S or L range of TR switch input. - Driving vehicle with vehicle speed 40 km/h {25 mph} or above. - Input/turbine speed sensor signal not input. Diagnostic support note: • This is a continuous monitor (CCM). • MIL illuminates if PCM detects the above malfunction conditions during first drive cycle. • PENDING CODE is not available. • FREEZE FRAME DATA is available. • HOLD indicator light flashes. • DTC is stored in the PCM memory.
POSSIBLE CAUSE	• Input/turbine speed sensor malfunction • Short to ground between input/turbine speed sensor terminal A and PCM terminal 1K • Short to ground between input/turbine speed sensor terminal B and PCM terminal 1O • Open circuit between input/turbine speed sensor terminal A and PCM terminal 1K • Open circuit between input/turbine speed sensor terminal B and PCM terminal 1O • Damaged connectors between input/turbine speed sensor and PCM • PCM malfunction


STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME PID DATA been recorded?	Yes	Go to next step.
1		No	Record FREEZE FRAME PID DATA on repair order, then go to next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Check for related Service Bulletins availability. • Is any related repair information available?	Yes	Perform repair or diagnosis according to available repair information. • If vehicle is not repaired, go to next step.
2		No	Go to next step.
3	VERIFY CURRENT INPUT SIGNAL STATUS • Turn the ignition switch off. • Start engine. • Measure frequency of input/turbine speed sensor using a oscilloscope. - IG ON: 0 Hz - Idle: Within 320-374 Hz (P, N position) • Are frequency of input/turbine speed sensor readings within specifications?	Yes	Go to intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING.)
3		No	Go to next step.
4	INSPECT INPUT/TURBINE SPEED SENSOR CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect input/turbine speed sensor connector. • Check for poor connection (damaged/pulled-out terminals, corrosion, etc.). • Is connection normal?	Yes	Go to next step.
4		No	Repair or replace connector and/or terminals, then go to Step 10.
5	INSPECT INPUT/TURBINE SPEED SENSOR RESISTANCE • Measure resistance between input/turbine speed sensor terminals (part-side). • Is resistance within 250-600 ohms between input/turbine speed sensor terminals (part-side)? (See INPUT/TURBINE SPEED SENSOR INSPECTION [FN4A-EL].)	Yes	Go to next step.
5		No	Replace input/turbine speed sensor, then go to Step 10. (See INPUT/TURBINE SPEED SENSOR REMOVAL/INSTALLATION [FN4A-EL].)
6	INSPECT INPUT/TURBINE SPEED SENSOR • Remove input/turbine speed sensor. • Is there iron powder stuck on input/turbine speed sensor? (See INPUT/TURBINE SPEED SENSOR REMOVAL/INSTALLATION [FN4A-EL].)	Yes	Clean input/turbine speed sensor, then go to Step 10.
6		No	Go to next step.
7	INSPECT PCM CONNECTOR FOR POOR CONNECTION • Disconnect PCM connector. • Check for poor connection (damaged/pulled-out terminals, corrosion, etc.). • Is connection normal?	Yes	Go to next step.
7		No	Repair or replace connector and/or terminals, then go to Step 10.
8	INSPECT INPUT/TURBINE SPEED SENSOR CIRCUIT FOR OPEN • Inspect input/turbine speed sensor terminals (harness-side) and PCM terminals (harness-side). - A and 1K - B and 1O • Is there continuity?	Yes	Go to next step.
8		No	Repair or replace harness, then go to Step 10.
9	INSPECT INPUT/TURBINE SPEED SENSOR CIRCUIT FOR SHORT TO GROUND • Inspect input/turbine speed sensor terminal (harness-side) and body ground. - A and body ground - B and body ground • Is there continuity?	Yes	Repair or replace harness, then go to next step.
9		No	Go to next step.
10	VERIFY TROUBLESHOOTING OF DTC P0715 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear DTC from memory using WDS or equivalent. • Drive vehicle with vehicle speed 40 km/h {25 mph} or above for 0.7 s or more. • Is same DTC present?	Yes	Replace PCM, then go to next step. (See PCM REMOVAL/INSTALLATION.)
10		No	Go to next step.
11	VERIFY AFTER REPAIR PROCEDURE • Perform "After Repair Procedure". (See AFTER REPAIR PROCEDURE [FN4A-EL].) • Are any DTCs present?	Yes	Go to applicable DTC inspection.
11		No	Troubleshooting completed.