DIAGNOSIS |
STEP 1. M.U.T.-III CAN bus diagnostics. |
STEP 2. Check whether the diagnosis code is reset. |
(2)Erase the diagnosis code. (3)Turn the ignition switch to the "LOCK" (OFF) position. (4)Turn the ignition switch to the "ON" position. (5)Check if the diagnosis code is set. (6)Turn the ignition switch to the "LOCK" (OFF) position. Q.
Is code No.C1291 set?Go to Step 3.The procedure is complete. |
STEP 3. Check ASTC-ECU connector A-48 and back-lamp switch connector B-02 <M/T> or inhibitor switch connector B-14 <A/T> for loose, corroded or damaged terminals, or terminals pushed back in the connector. |
Q.
Is the check result normal?
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Go to Step 4. |
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NO <M/T> : Check the back-lamp switch. (Refer to GROUP 22B, Transmission inspection .) Then go to Step 5. |
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NO <A/T> : Check if the automatic transmission outputs a diagnosis code. (Refer to GROUP 23A, Troubleshooting .) Then go to Step 5. |
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STEP 4. Check the harness wires between ASTC-ECU connector A-48 terminal 39 and back-lamp switch connector B-02 terminal 1 <M/T> or inhibitor switch connector B-14 terminal 8 <A/T>. |
Q.
Is the check result normal?
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Go to Step 5. |
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Repair the wiring harness. Then go to Step 6. |
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STEP 5. Check whether the diagnosis code is reset. |
Check again if the diagnosis code is set. (1)Turn the ignition switch to the "ON" position. (2)Erase the diagnosis code. (3)Turn the ignition switch to the "LOCK" (OFF) position. (4)Turn the ignition switch to the "ON" position. (5)Check if the diagnosis code is set. (6)Turn the ignition switch to the "LOCK" (OFF) position. Q.
Is code No.C1291 set?Replace the hydraulic unit assembly (integrated with ASTC-ECU). Then go to Step 6.It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction . |
STEP 6. Check whether the diagnosis code is reset. |
Check again if the diagnosis code is set. (1)Turn the ignition switch to the "ON" position. (2)Erase the diagnosis code. (3)Turn the ignition switch to the "LOCK" (OFF) position. (4)Turn the ignition switch to the "ON" position. (5)Check if the diagnosis code is set. (6)Turn the ignition switch to the "LOCK" (OFF) position. Q.
Is code No.C1291 set?Go to Step 1.The procedure is complete. |