Automatic Transmission Interlock System: Overview Honda CR-V II

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1. Press the brake pedal. Are the brake lights ON? YES - Go to step 2. NO - Repair faulty brake light circuit.
2. Turn the ignition switch ON (II).
3. With the accelerator pedal released, press the brake pedal.
4. Measure the voltage between PCM connector terminal E 13 and body ground. Is there battery voltage? YES - Check for an open in the wire between PCM connector terminal E13 and the multiplex control unit. If the wire is OK, check for a loose terminal fit in the multiplex control unit connectors. If necessary, substitute a known-good multiplex control unit and recheck. NO - Go to step 5.
5. Turn the ignition switch OFF.
6. Disconnect the battery negative terminal.
7. Disconnect PCM connectors A (31P) and E (31P).
8. Reconnect the battery negative terminal.
9. Press the brake pedal, and measure the voltage between PCM connector terminals E22 and A23 or A24. Is there battery voltage? YES - Release the brake pedal, and go to step 10. NO - Repair open in the wire between PCM connector terminal E22 and the brake pedal position switch.
10. Measure the voltage between the No. 3 terminal of connector E (13P) and body ground. Is there battery voltage while pushing the brake pedal? YES - Release the brake pedal, and go to step 11. NO - Repair open or short in the wire between the multiplex control unit and the brake pedal position switch via the No. 3 terminal of connector E (13P).
11. Disconnect the battery negative terminal.
12. Connect PCM connectors A (31P) and E (31P), and connector E (13P).
13. Reconnect the battery negative terminal.
14. Disconnect the O/D switch/shift lock solenoid/park pin switch connector (see «SERVICING - A/T»(ref-171202) ).
15. Turn the ignition switch ON (II).
16. With the accelerator pedal released, press the brake pedal, and measure the voltage between the No. 4 terminal of the O/D switch/shift lock solenoid/park pin switch connector and body ground. Is the battery voltage? YES - Go to step 17. NO - Repair open or short in the ire between the O/D switch/shift lock solenoid/park pin switch connector and under-dash fuse/relay box.
17. Measure the voltage between the No. 3 and No.4 terminals of the O/D switch/shift lock solenoid/Park pin switch connector while pressing the brake pedal. Is there battery voltage? YES - Go to step 18. NO - Repair open in the wire between the O/D switch/shift lock solenoid/park pin switch connector and the multiplex control unit.
18. Connect the battery positive terminal to the No. 4 terminal of the O/D switch/shift lock solenoid/park pin switch connector, and connect the battery negative terminal to the No. 3 terminal. Check that the shift lock solenoid operates. NOTE: Do not connect the battery positive terminal to the No. 3 terminal or you will damage the diode inside the shift lock solenoid. Does the shift lock solenoid operate properly? YES - Check that the shift lock mechanism work properly. If the mechanism does not work, repair or replace the shift lever assembly. If necessary, substitute a known-good multiplex control unit and recheck. NO - Replace the shift lock solenoid.