Code No.P0973: Shift Solenoid SR System (Short Circuit)


OPERATION



DIAGNOSIS CODE SET CONDITIONS


When the shift solenoid SR is ON, if a status continues for 0.5 seconds with which the A/T-ECU terminal monitor voltage is 0 V, code No.P0973 is set.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. Measure the resistance at A/T-ECU connector.
Disconnect the connector, and measure the resistance between terminal SVSA line and body earth at the harness side.
OK: 11 - 15 Ω (A/T fluid temperature 20°C)

Q. Is the check result normal?
Go to Step 6.
Go to Step 2.

STEP 2. Measure the resistance at transmission wiring harness connector.
Disconnect the connector, and measure the resistance between terminal SVSA line and body earth at the transmission wiring harness side.
OK: 11 - 15 Ω (A/T fluid temperature 20°C)

Q. Is the check result normal?
Go to Step 3.
Go to Step 4.

STEP 3. Check for open circuit, short circuit and harness damage in SVSA line between transmission wiring harness 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 4. Check for open circuit, short circuit and harness damage in SVSA line between transmission wiring harness connector and shift solenoid SR connector.

Q. Is the check result normal?
Go to Step 5.
Repair or replace the transmission wiring harness.

STEP 5. Check the shift solenoid SR.
Refer to .

Q. Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the valve body (shift solenoid SR).

STEP 6. 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.P0973 set?
Replace the A/T-ECU.
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).