DTC P0722 [SJ6A-EL]

id050208801600

DTC P0722

Vehicle speed sensor (VSS) circuit malfunction (open circuit/short circuit)

DETECTION CONDITION

•  When all conditions below are satisfied.

―  D range of TR switch input

―  Turbine speed signal 12 pulse input

―  VSS signal not input

Diagnostic support note:

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

•  The AT warning light illuminates if the TCM detects the above malfunction condition during the first drive cycle.

•  PENDING CODE is not available.

•  FREEZE FRAME DATA is available.

•  The DTC is stored in the TCM memory.

POSSIBLE CAUSE

•  TCM connector or terminal malfunction

•  Short to GND in wiring harness between VSS terminal B and TCM terminal 2D

•  Short to GND in wiring harness between VSS terminal A and TCM terminal 2C

•  Short to power supply in wiring harness between VSS terminal B and TCM terminal 2D

•  Short to power supply in wiring harness between VSS terminal A and TCM terminal 2C

•  VSS connector or terminal malfunction

•  VSS malfunction

•  Open circuit between VSS terminal B and TCM terminal 2D

•  Open circuit between VSS terminal A and TCM terminal 2C

•  TCM malfunction

DTC P0722	Vehicle speed sensor (VSS) circuit malfunction (open circuit/short circuit)
DETECTION CONDITION	• When all conditions below are satisfied. ― D range of TR switch input ― Turbine speed signal 12 pulse input ― VSS signal not input Diagnostic support note: • The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle. • The AT warning light illuminates if the TCM detects the above malfunction condition during the first drive cycle. • PENDING CODE is not available. • FREEZE FRAME DATA is available. • The DTC is stored in the TCM memory.
POSSIBLE CAUSE	• TCM connector or terminal malfunction • Short to GND in wiring harness between VSS terminal B and TCM terminal 2D • Short to GND in wiring harness between VSS terminal A and TCM terminal 2C • Short to power supply in wiring harness between VSS terminal B and TCM terminal 2D • Short to power supply in wiring harness between VSS terminal A and TCM terminal 2C • VSS connector or terminal malfunction • VSS malfunction • Open circuit between VSS terminal B and TCM terminal 2D • Open circuit between VSS terminal A and TCM terminal 2C • 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 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.
2		No	Go to the next step.
3	INSPECT TCM CONNECTOR FOR POOR CONNECTION • Turn the ignition switch to the LOCK position. • Disconnect the TCM connector. • Inspect for poor connection at TCM terminals 2D and 2C (such as damaged/pulled-out pins, corrosion). • Are terminals normal?	Yes	Go to the next step.
3		No	Repair or replace the connector and/or terminal, then go to Step 13.
4	INSPECT CONTINUITY OF VSS CIRCUIT • Inspect for continuity between the coupler component terminals 2D and 2C (wiring harness-side). • Is there continuity?	Yes	Go to the next step.
4		No	Go to Step 7.
5	INSPECT VSS SIGNAL CIRCUIT FOR SHORT TO GND • Inspect for continuity between the TCM terminals (wiring harness-side) and body GND. ― Terminal 2D and body GND ― Terminal 2C and body GND • Is there continuity?	Yes	Go to the next step.
5		No	Repair or replace the wiring harness for short to GND, then go to Step 10.
6	INSPECT VSS CIRCUIT FOR SHORT TO POWER SUPPLY • Turn the ignition switch to the ON position (engine off). • Measure the voltage at TCM (wiring harness-side) terminals 2D and 2C. • Is there 0 V at the TCM wiring harness-side connector terminals?	Yes	Go to the next step.
6		No	Repair or replace the wiring harness for short to power supply, then go to Step 10.
7	INSPECT TERMINAL VSS FOR POOR CONNECTION • Turn the ignition switch to the LOCK position. • Disconnect the VSS connector. • Inspect for poor connection at VSS terminals A and B (such as damaged/pulled-out pins, corrosion). • Are terminals normal?	Yes	Go to the next step.
7		No	Repair or replace the connector and/or terminal, then go to Step 10.
8	INSPECT VSS • Inspect the VSS. (See VEHICLE SPEED SENSOR (VSS) INSPECTION [SJ6A-EL].) • Is the VSS normal?	Yes	Go to the next step.
8		No	Replace the VSS, then go to Step 10. (See VEHICLE SPEED SENSOR (VSS) REMOVAL/INSTALLATION [SJ6A-EL].)
9	INSPECT VSS CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between VSS terminals (wiring harness-side) and TCM terminals (wiring harness-side). ― Terminal B and terminal 2D ― Terminal A and terminal 2C • Is there continuity?	Yes	Go to the next step.
9		No	Repair or replace the wiring harness for open circuit, then go to the next step.
10	VERIFY TROUBLESHOOTING OF DTC P0722 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 and transmission. 3. Drive the vehicle in D range and make sure that the gears shift smoothly from 1GR to 6GR. • Is the same DTC present?	Yes	Replace the TCM, then go to the next step. (See TCM REMOVAL/INSTALLATION [SJ6A-EL].)
10		No	Go to the next step.
11	VERIFY NO DTC HAS BEEN PRESENTED • Perform the “Reading DTCs Procedure”. (See AUTOMATIC TRANSMISSION ON-BOARD DIAGNOSTIC FUNCTION [SJ6A-EL].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [SJ6A-EL].)
11		No	DTC troubleshooting completed.