2003 Honda Accord EX A/T Interlock System
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Fig. 1: locating shift interlock system components circuit diagram shift lock system circuit troubleshooting 1. Press the brake pedal. Are the brake lights on? Yes -go to step 2. No -repair faulty brake light circuit. 2. Connect the hds to the dlc. Check engine speed and throttle position in the a/t data list. Is the engine speed at idle, and tps about 0.5 v? Yes -go to step 3. No -repair engine speed or throttle position input. 3. Select shift lock sol test in misc. Test menu, then carry out shift lock solenoid function test. Does the shift lock solenoid work properly? Yes -system circuit is ok. Check the shift lock mechanism, if necessary. No -go to step 4. 4. 5. 6. 7. Remove the center console (see center console removal/installation ). Disconnect the shift lock solenoid connector. Turn the ignition switch on (ii). Measure the voltage between no. 1 terminal of the shift lock solenoid connector and body ground. Fig. 3: measuring voltage between no. 1 terminal of shift lock solenoid connector & body ground is there battery voltage? Yes -go to step 8. No -check for blown no. 21 fuse in the under-dash fuse/relay box.
Fig. 1: locating shift interlock system components circuit diagram shift lock system circuit troubleshooting 1. Press the brake pedal. Are the brake lights on? Yes -go to step 2. No -repair faulty brake light circuit. 2. Connect the hds to the dlc. Check engine speed and throttle position in the a/t data list. Is the engine speed at idle, and tps about 0.5 v? Yes -go to step 3. No -repair engine speed or throttle position input. 3. Select shift lock sol test in misc. Test menu, then carry out shift lock solenoid function test. Does the shift lock solenoid work properly? Yes -system circuit is ok. Check the shift lock mechanism, if necessary. No -go to step 4. 4. 5. 6. 7. Remove the center console (see center console removal/installation ). Disconnect the shift lock solenoid connector. Turn the ignition switch on (ii). Measure the voltage between no. 1 terminal of the shift lock solenoid connector and body ground. Fig. 3: measuring voltage between no. 1 terminal of shift lock solenoid connector & body ground is there battery voltage? Yes -go to step 8. No -check for blown no. 21 fuse in the under-dash fuse/relay box.
If the fuse is ok, repair open in the wire between the shift lock
solenoid connector and the under-dash fuse/relay box. 8. Shift the
shift lever into the p position, and press the brake pedal. Do not press
the accelerator. 9. Measure the voltage between shift lock solenoid
connector terminals while pressing the brake pedal. Fig. 4: measuring
voltage between shift lock solenoid connector terminals is there
battery voltage? Yes -check the shift lock mechanism. If the mechanism
is ok, replace the shift lock solenoid (see shift lock solenoid
replacement ). No -check for poor or loose pcm connector terminal e2 at
the pcm, and check for an open in the wire between pcm connector
terminal e2 and shift lock solenoid connector. If the connection and
wire is ok, substitute a known-good pcm and recheck. Key interlock system circuit troubleshooting
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