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

DIAGNOSIS PROCEDURE

STEP 1. Measure the voltage at shift switch connector.
(1)Disconnect the connector, and measure the voltage between terminal power supply line and body earth at the wiring harness side.
(2)Turn the ignition switch to the "ON" position.
OK: Battery voltage

Q. Is the check result normal?
Go to Step 2.
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.

STEP 2. Measure the voltage at A/T-ECU connector
(1)Disconnect the connector, and measure the voltage between terminal MSW line and body earth at the harness side.
(2)Turn the ignition switch to the "ON" position.
(3)Selector lever position: Sport mode.
OK: System voltage
(4)Selector lever position: Other than above.
OK: 1 V or less

Q. Is the check result normal?
Go to Step 5.
Go to Step 3.

STEP 3. Check the shift switch (sport mode switch).
Refer to .

Q. Is the check result normal?
Go to Step 4.
Replace the selector lever assembly.

STEP 4. Check for short circuit in MSW line between shift switch assembly connector and A/T-ECU connector.

Q. Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Repair the connector(s) or the wiring harness.

STEP 5. Check whether the diagnosis code is set again.

  • Ignition switch: "LOCK"(OFF) → "ON"
  • Check again if the diagnosis code is set.

Q. Is diagnosis code No.P0958 set?
Replace the A/T-ECU.
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).