Code No.P0958: Select Switch (Sport Mode Switch) System
OPERATION
The select switch detects the shift range (sport mode) which the driver has selected, and sends the information to the A/T-ECU.
COMMENTS ON TROUBLE SYMPTOM
While the engine is running, when the selector lever is in P/R/N position, if the sport mode ON status from the select switch continues for 2 seconds, code No.P0958 is set.
PROBABLE CAUSES
- Malfunction of select switch
- Damaged harness wires and connectors
- Malfunction of the A/T-ECU
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STEP 1. Measure the voltage at shift switch connector.
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(1)Disconnect the connector, and measure the voltage between terminal power supply line and body earth at the wiring harness side.
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(2)Turn the ignition switch to the "ON" position. OK: Battery voltage
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Q.
Is the check result normal?
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Go to Step 2.
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Check for open circuit and short circuit in power supply line between shift switch connector and J/B connector. Then repair the connector(s) or the wiring harness.
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STEP 2. Measure the voltage at A/T-ECU connector
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(1)Disconnect the connector, and measure the voltage between terminal MSW line and body earth at the harness side.
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(2)Turn the ignition switch to the "ON" position.
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(3)Selector lever position: Sport mode. OK: System voltage
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(4)Selector lever position: Other than above. OK: 1 V or less
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Q.
Is the check result normal?
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Go to Step 5.
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Go to Step 3.
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STEP 3. Check the shift switch (sport mode switch).
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Refer to .
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Q.
Is the check result normal?
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Go to Step 4.
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Replace the selector lever assembly.
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STEP 4. Check for short circuit in MSW line between shift switch assembly connector and A/T-ECU connector.
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Q.
Is the check result normal?
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Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
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Repair the connector(s) or the wiring harness.
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STEP 5. Check whether the diagnosis code is set again.
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- Ignition switch: "LOCK"(OFF) → "ON"
- Check again if the diagnosis code is set.
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Q.
Is diagnosis code No.P0958 set?
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Replace the A/T-ECU.
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Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
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