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TRANSMISSION CONTROL SYSTEM (4L30–E) 7A1–11 Diagnosis Electronic Diagnosis How To Diagnose The Problem 1. To avoid incorrect diagnostics, this book needs to be followed accurately. Unless stated, do not jump 2. The sections in CAPITALS and bold are the main sections that can be found in the contents. 3. The GOTO “SECTION” means to continue to check going to the “section”. 4. The GOTHROUGH “SECTION” means to go through the “section” and then to go back to the place 5. BASIC ELECTRIC CIRCUITS: You should understand the basic theory of electricity. Check Trans Indicator Find CHECK TRANS indicator and verify if it is CHECK. C. Is never ON when the ignition key is turned on: GOTHROUGH CHECK TRANS CHECK D. Is ON during 2 to 3 seconds at ignition but OFF after: Normal operation. No DTC or malfunction. 821RW105 Diagnostic Check This test determines if the transmission or its input, or 1. Connect the TECH–2: GOTHROUGH TECH–2 OBD II CONNECTION. 2. Turn on the ignition but not the engine. Code (DTC): 4. Do you have a DTC? YES: write down all code numbers and do the DTC 1. GOTHROUGH “CHECK TRANS” CHECK 2. IF it is flashing and the flash is 0.2 seconds ON and 0.2 seconds OFF, this means that you should Normal C07RW007 Abnormal C07RW008 |