Operation CHARM: Car repair manuals for everyone.
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Electronic Level Control

NOTE: It is essential that the system be disabled using the disable switch when any service under the vehicle is required or the vehicle is to be lifted.

If the RTC 6834 handheld tester displays:
1. Right Front Sensor is above limit, do test A.
Test A
2. Right Front Sensor is below limit, do test A.
Test A
3. Left Front Sensor is above limit, do test D.
Test D
4. Left Front Sensor is below limit, do test D.
Test D
5. Right Rear Sensor is above limit, do test G.
Test G
6. Right Rear Sensor is below limit, do test G.
Test G
7. Left Rear Sensor is above limit, do test J.
Test J
8. Left Rear Sensor is below limit, do test J.
Test J
9. Engine speed fault is detected, do test M.
Test M
10. Vehicle speed fault is detected, do test N.
Test N
11. Pressure switch is stuck on, do test O.
Test O
12. Left Front Valve stuck closed, do test P.
Test P
13. Cannot lower left front air spring, do test P.
Test P
14. Left Front valve stuck open, check air lines to air spring for leaks. If no air leak is found replace the Air Valve block.
15. Right Front Valve stuck closed, do test Q.
Test Q
16. Cannot lower right front air spring, do test Q.
Test Q
17. Right Front valve stuck open, check air lines to air spring for leaks. If no air leak is found, replace the Air Valve block.
18. Left Rear Valve stuck closed, do test R.
Test R
19. Cannot lower left rear air spring, do test R.
Test R
20. Left Rear valve stuck open, check air lines to air spring for leaks. If no air leak is found replace the Air Valve block.
21. Right Rear Valve stuck closed, do test S.
Test S
22. Cannot lower right rear air spring, do test S.
Test S
23. Right Rear valve stuck open, check air lines to air spring for leaks. If no air leak is found, replace the Air Valve block.
24. Air Compressor failure is indicated, do test T.
Test T
25. An air supply leak is indicated, do test T.
Test T
26. Exhaust valve is stuck open, do test T.
Test T
27. Inlet valve stuck closed, do test T.
Test T
28. Exhaust valve stuck closed, do test W.
Test W