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DRIVE LINE CONTROL SYSTEM (TOD) 4B2–36 Diagnosis from Trouble Codes D Diagnose the fault that have been saved to the control Check flow Trouble code Phenomenon Standard 1 23, 36, 37, 38 The ECU has failed. — P1712, P1714 Step Action Yes No 1 Turn on the starter switch. Is the trouble reproduced? Replace the ECU and conduct the test run. Go to Step 3 Go to Step 2 2 1. Clear the trouble codes. Is the trouble reproduced during the test run? Replace the ECU and conduct the test run. Go to Step 3 The trouble is not reproduced. Refer to “Trouble intermittently observed”. Go to Step 3 3 1. Check that all the parts are mounted. Is this step complete? Verify the repair. Return to Step 3 |