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P0562-BATTERY VOLTAGE LOW (CONTINUED) 5. CHECKING THE (T16) TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT Turn the ignition off to the lock position. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. Using a 12-volt test light connected to ground, check all (T16) Trans- Does the test light illuminate brightly? Yes >> Go To 6 No >> Repair the (T16) Transmission Control Relay Output circuit for an open or high resistance. Perform 45RFE/545RFE TRANSMISSION VERIFICATION 6. TRANSMISSION CONTROL RELAY Turn the ignition off to the lock position. Reconnect all previously disconnected connectors. Install a substitute Relay in place of the Transmission Control Relay. Start the engine. Using a voltmeter, measure the vehicles battery voltage. With the scan tool, monitor the Transmission Switched Battery Voltage. Compare the scan tool Transmission Switched Battery voltage to the actual battery voltage reading on the voltmeter. Is the scan tool voltage within 1.0 volt of the battery voltage? Yes >> Replace the Transmission Control Relay. Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No >> Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. HB AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS 21 - 361 |