Diagnostic Procedure

DTC P0500 DIAGNOSTIC PROCEDURE TABLE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED Has FREEZE FRAME DATA been recorded?	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 Bulletins and/or on-line 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	VERIFY STORED DTC IN ABS HU/CM OR DSC HU/CM (With ABS/DSC) Turn the ignition switch to the ON position (Engine off). Verify stored DTCs in ABS HU/CM or DSC HU/CM. Are DTCs stored?	Yes	Go to the appropriate DTC inspection (See INTERMITTENT CONCERN TROUBLESHOOTING .)
3		No	Go to the Step 11.
4	VERIFY CURRENT INPUT SIGNAL STATUS-IS CONCERN INTERMITTENT OR CONSTANT (MT WITHOUT ABS/DSC) Connect the WDS or equivalent to DLC-2. Start the engine. Access VSS PID using the WDS or equivalent. Vehicle speed 20 km/h {12.4 mph}: 20 km/h {12.4 mph} Vehicle speed 40 km/h {24.8 mph}: 40 km/h {24.8 mph} Are PID readings within specification?	Yes	Go to the INTERMITTENT concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING .)
4		No	Go to the next step.
5	INSPECT VSS CONNECTOR FOR POOR CONNECTION Verify that the VSS connector is connected securely. Is connector normal?	Yes	Go to the next step.
5		No	Reconnect the connector, then go to Step 11.
6	INSPECT THE VSS Perform VSS inspection. (See VEHICLE SPEED SENSOR (VSS) INSPECTION .) Is the VSS normal?	Yes	Go to the next step.
6		No	Replace VSS, then go to Step 11. (See VEHICLE SPEED SENSOR (VSS) REMOVAL/INSTALLATION .)
7	INSPECT VSS CIRCUIT FOR SHORT TO POWER SUPPLY Turn the ignition switch off. Disconnect the VSS connector. Turn the ignition switch to the ON position (Engine off). Measure the voltage following terminals: VSS terminal A (wiring harness-side) VSS terminal B (wiring harness-side) Is any voltage reading?	Yes	Repair or replace suspected harness, then go to Step 11.
7		No	Go to the next step.
8	INSPECT VSS CIRCUIT FOR SHORT TO GROUND inspect for continuity between following terminal and body ground: VSS terminal B (wiring harness-side) Is there continuity?	Yes	Repair or replace suspected harness, then go to Step 11.
8		No	Go to the next step.
9	INSPECT PCM CONNECTOR FOR POOR CONNECTION Disconnect the PCM connector. Inspect for poor connection (such as damaged/pulled-out terminals, corrosion). Is there any malfunction?	Yes	Repair terminal, then go to Step 11.
9		No	Go to the next step.
10	INSPECT VSS CIRCUIT FOR OPEN CIRCUIT inspect for continuity between following terminals (wiring harness-side): VSS terminal A and main relay VSS terminal B and PCM terminal 2O VSS terminal C and body ground Is there continuity?	Yes	Inspect VSS pulse wheel for damage. Replace VSS pulse wheel and go to the next step.
10		No	Repair or replace suspected harness, then go to the next step.
11	VERIFY TROUBLESHOOTING OF DTC P0500 COMPLETED Make sure to reconnect all disconnected connectors. Turn the ignition switch to the ON position (Engine off). Clear the DTC from PCM memory using the WDS or equivalent. Warm up the engine. Access RPM and LOAD PID using the WDS or equivalent. Drive vehicle under the following conditions for 18 s. Engine speed: 2,000 rpm or above Gear: Gear is in other than NEUTRAL Load: 40% or above Is PENDING CODE for this DTC present?	Yes	Replace PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION .)
11		No	Go to the next step.
12	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE .) Are any DTCs present?	Yes	Go to applicable DTC troubleshooting. (See DTC TABLE .)
12		No	Troubleshooting completed.