DTC P0722:00 [AY6A-EL, AY6AX-EL]

id0502k1821500

DTC P0722:00

VSS circuit no signal

DETECTION CONDITION

•  Conditions: Engine running, TCM communication normal, driving in D position, vehicle speed over 20 km/h {12 mph}

•  Circumstances: VSS signal not input with input/turbine speed sensor 16 pulse

•  Time period: Determined after 500 consecutive times

Diagnostic support note:

•  The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle.

•  The AT warning light illuminates.

•  PENDING CODE is not available.

•  FREEZE FRAME DATA is available.

•  The DTC is stored in the TCM memory.

FAIL-SAFE FUNCTION

•  Inhibits learning control

•  Inhibits adaptive shift control

•  Back up from another device (DSC/RSC HU/CM, Input/turbine speed sensor)

POSSIBLE CAUSE

•  Coupler component connector or terminal malfunction

•  Short to GND in wiring harness between VSS terminal A and TCM terminal B19

•  Short to GND in wiring harness between VSS terminal B and TCM terminal B20

•  VSS connector or terminal malfunction

•  VSS malfunction

•  Open circuit between VSS terminal A and TCM terminal B19

•  Open circuit between VSS terminal B and TCM terminal B20

•  TCM malfunction

DTC P0722:00	VSS circuit no signal
DETECTION CONDITION	• Conditions: Engine running, TCM communication normal, driving in D position, vehicle speed over 20 km/h {12 mph} • Circumstances: VSS signal not input with input/turbine speed sensor 16 pulse • Time period: Determined after 500 consecutive times Diagnostic support note: • The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle. • The AT warning light illuminates. • PENDING CODE is not available. • FREEZE FRAME DATA is available. • The DTC is stored in the TCM memory.
FAIL-SAFE FUNCTION	• Inhibits learning control • Inhibits adaptive shift control • Back up from another device (DSC/RSC HU/CM, Input/turbine speed sensor)
POSSIBLE CAUSE	• Coupler component connector or terminal malfunction • Short to GND in wiring harness between VSS terminal A and TCM terminal B19 • Short to GND in wiring harness between VSS terminal B and TCM terminal B20 • VSS connector or terminal malfunction • VSS malfunction • Open circuit between VSS terminal A and TCM terminal B19 • Open circuit between VSS terminal B and TCM terminal B20 • TCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has the FREEZE FRAME DATA been recorded on the repair order?	Yes	Go to the next step.
1		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 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.
2		No	Go to the next step.
3	INSPECT COUPLER COMPONENT CONNECTOR FOR POOR CONNECTION • Switch the ignition OFF. • Remove the TCM. (See TCM REMOVAL/INSTALLATION [AY6A-EL, AY6AX-EL].) • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 8.
3		No	Go to the next step.
4	INSPECT VSS CIRCUIT FOR SHORT TO GND • Switch the ignition OFF. • Inspect for continuity between the following circuits: ― Coupler component terminal B19 (wiring harness-side) and body GND ― Coupler component terminal B20 (wiring harness-side) and body GND • Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to GND, then go to Step 8.
4		No	Go to the next step.
5	INSPECT VSS CONNECTOR FOR POOR CONNECTION • Switch the ignition OFF. • Disconnect the VSS connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 8.
5		No	Go to the next step.
6	INSPECT VSS • Inspect the VSS. (See VEHICLE SPEED SENSOR (VSS) INSPECTION [AY6A-EL, AY6AX-EL].) • Is there any malfunction?	Yes	Replace the VSS, then go to Step 8. (See VEHICLE SPEED SENSOR (VSS) REMOVAL/INSTALLATION [AY6A-EL, AY6AX-EL].)
6		No	Go to the next step.
7	INSPECT VSS CIRCUIT FOR OPEN CIRCUIT • Switch the ignition OFF. • Inspect for continuity between the following circuits: ― VSS terminal A (wiring harness-side) and coupler component terminal B19 (wiring harness-side) ― VSS terminal B (wiring harness-side) and coupler component terminal B20 (wiring harness-side) • Is there continuity?	Yes	Go to the next step.
7		No	Repair or replace the wiring harness for a possible open circuit, then go to the next step.
8	VERIFY DTC TROUBLESHOOTING COMPLETED • Make sure to reconnect all the disconnected connectors. • Clear the DTC using the M-MDS. • Perform the following procedure to ensure that the DTC has been resolved: 1. Start the engine. 2. Warm up the engine to normal operating temperature. 3. Drive the vehicle, two separate times, in D position at 20 km/h {12 mph} or more for 150 s or more. • Is the same DTC present?	Yes	Replace the TCM, then go to the next step. (See TCM REMOVAL/INSTALLATION [AY6A-EL, AY6AX-EL].)
8		No	Go to the next step.
9	VERIFY NO DTCs ARE PRESENT • Perform the “Reading DTCs Procedure”. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [AY6A-EL, AY6AX-EL].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [AY6A-EL, AY6AX-EL].)
9		No	DTC troubleshooting completed.