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Home >> Mercedes Benz >> 1993 >> 300SL Automatic >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Power Convertible Soft/Hard Tops & Roll Bar - 300SL, 500SL & 600SL >> Trouble Shooting >> Soft/Hard Top System - Function Test (Section 11/1)

Soft/Hard Top System - Function Test (Section 11/1)

CAUTION: Injury hazard from pinching and crushing, in extreme cases extremities can even be severed when caught in the mechanism. DO NOT allow any body parts to be in the general area of the moving components. DO NOT reach into the moving mechanism at any time during any tests. Keep away from the moving mechanism of components which are being activated using the Hand Held Tester (HHT) and or directly via circuit 30.
NOTE: If hydraulic system problem is suspected, see HYDRAULIC SYSTEM BLEEDING  under ON-VEHICLE SERVICE. For identification of sequence of soft top opening and closing. See Figure and Figure .
SOFT/HARD TOP DIAGNOSTIC - FUNCTION TEST

Symptom Test Step/Test Scope Test Condition Nominal Value (1) Section/Possible Cause/Remedy
1.0 Power Soft Top Switch (S84) Indicator Lamp Ignition: ON Indicator Lamp Within Power Soft Top Switch Must Illuminate (2) S84, Open Circuit, Power Soft Top Control Module (N52
2.0 Hard Top Safety Test Ignition: On, After A Time Period Of More Than 10 Seconds, Push Power Soft Top Switch (S84) To OPEN For Approximately 10 Seconds Hard Top Must Not Unlock Power Soft Top Control Module (N52)
3.0 Lock Hard Top Hard Top Set In Place, Unlocked. Ignition: ON, Push Power Soft Top Switch (S84) To CLOSE Locking Begins Immediately, Once The Locking Procedure Is Completed The Indicator Lamp In Switch Goes Out (3) See Symptom No. 1
4.0 Unlock Hard Top Ignition: ON, Within 10 Seconds Push Power Soft Top Switch (S84) To OPEN After 2 To 4 Seconds The Unlocking Procedure Begins First At Front & Then At Rear (3) See Symptom No. 1
5.0 Raise Roll Bar Using Roll Bar Switch (S83) Ignition: ON Push Roll Bar Switch (S83) To Raise Roll Bar Raises (3) See Symptom No. 5
6.0 Close Power Soft Top Using Power Soft Top Switch (S84) Ignition: ON Hard Top Removed From Vehicle. Push Power Soft Top Switch (S84) To CLOSE Roll Bar Retracts, Side Windows Open, Soft Top Closes, Roll Bar Is Raised, Side Windows Close (3) See Symptoms No. 10-19
7.0 Open Power Soft Top Using Power Soft Top Switch (S84) Ignition: ON Roll Bar Raised, Push Power Soft Top Switch (S84) To OPEN Roll Bar Retracts, Side Windows Open, Power Soft Top Opens, Roll Bar Raises, Side Windows Close (3) See Symptoms No. 20-29
8.0 Lower Roll Bar Using Roll Bar Switch (S83) Ignition: ON, Press Roll Bar Switch (S83) To Lower Roll Bar Retracts (3) See Symptom No. 7
9.0 Gong In Dome Lamp With The Soft Top Unlocked, Drive Vehicle A Short Distance Gong In Dome Lamp Must Sound (3) See Symptoms No. 3 & 4
10.0 Side Window Convenience Feature Function Side Windows Open. Lock Vehicle From Driver's Door, Passenger Door & Trunk Lid Lock, While Holding Pressed (Key In Trunk Lock At 60 Degrees) Side Windows Close (3) See Symptom No. 32
(1) Observe preparation for Test, see PREPARATION FOR TESTING  under ELECTRICAL DIAGNOSTIC TESTS (SECTION 23).

(2) See appropriate wiring diagrams. See WIRING DIAGRAMS  .
(3) See SOFT/HARD TOP SYMPTOM DIAGNOSTICS  table under SYMPTOMS (SECTION 13).
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