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7A1–12 TRANSMISSION CONTROL SYSTEM (4L30–E) “Check Trans” Check 1. Indicator is ON during 2 seconds at ignition (or when the engine is cranked) but it is OFF after the engine 821RW105 Normal C07RW047 2. Indicator is flashing and the flash is 0.8 seconds ON and 0.8 seconds OFF always when ignition is on Abnormal C07RX009 3. Indicator is staying ON always when Ignition is ON. 1. This means that connection between the lamp and the PCM is shorted to ground. 2. Verify if instrument panel terminal 6 of connector I–1 is shorted to ground. 3. Verify if the PCM connector C1 (RED) terminal A14 is shorted to ground. 4. Verify that the instrument panel terminal 12 of connector I–1 is connected to battery. 5. IF problem solved: GOTO CHECK TRANS INDICATOR. NO:Replace Powertrain Control Module (PCM). 4. Indicator is staying OFF with the ignition ON (engine OFF). and the PCM is shorted to battery or opened. 2. Verify if instrument panel terminal 6 of connector I–1 is shorted to battery or open. 3. Verify if the PCM connector C1 (RED) terminal A14 is shorted to battery or open. 4. Verify that the instrument panel terminal 12 of connector I–1 is connected to battery. If not, 5. IF problem solved: GOTO CHECK TRANS INDICATOR. NO: Replace Powertrain Control Module (PCM). |