DTC 2-9
DTC 2-9: Left-front Suspension Stroke Sensor Signal Circuit Low VoltageNOTE: If DTC 8-3 is stored at the same time as DTC 2-9, troubleshoot DTC 8-3 first, then recheck for DTC 2-9.
1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch OFF.
4. Start the engine, and wait 5 seconds.
5. Check for DTCs with the HDS.
Is DTC 2-9 indicated?
YES - Go to step 6.
NO - Intermittent failure at this time. Check for poor or loose connections between the suspension stroke sensor and the active damper control unit.
6. Turn the ignition switch OFF.
7. Disconnect the left-front suspension stroke sensor 3P connector.
8. Disconnect active damper control unit connector A (20P).
9. Disconnect the headlight leveling control unit connector (16P).
10. Check for continuity between body ground and active damper control unit connector A (20P) terminal No. 15.
Is there continuity?
YES - Repair short to body in the wire between the left-front suspension stroke sensor and the active damper control unit.
NO - Go to step 11.
11. Check for continuity between the appropriate suspension stroke sensor terminals No. 2 and No. 3.
Is there continuity?
YES - Repair short in the wires between the appropriate suspension stroke sensor and the active damper control unit.
NO - Go to step 12.
12. Check for continuity between left-front suspension stroke sensor 3P connector terminal No. 2 and active damper control unit connector A (20P) terminal No. 15.
Is there continuity?
YES - Go to step 13.
NO - Repair open in the wire between the left-front suspension stroke sensor and the active damper control unit.
13. Disconnect active damper control unit connector B (14P).
14. Check for continuity between headlight leveling control unit 16P connector terminal No. 13 and left-front suspension stroke sensor 3P connector terminal No. 1, and between active damper control unit connector B (14P) terminal No. 6 and left-front suspension stroke sensor 3P connector terminal No. 1 individually.
Is there continuity?
YES - Go to step 15.
NO - Repair open in the wire between the left-front suspension stroke sensor and the headlight leveling control unit, or between active damper control unit and the left-front suspension stroke sensor.
15. Reconnect the headlight leveling control unit 16P connector.
16. Start the engine, and wait 5 seconds.
17. Measure voltage between body ground and left-front suspension stroke sensor 3P connector terminal No. 1.
Is there about 5 V?
YES - Replace the suspension stroke sensor.
NO - Check the headlight leveling control system. If necessary, substitute a known-good headlight leveling control unit.