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SWS DIAGNOSIS TSB Revision SIMPLIFIED WIRING SYSTEM (SWS) 54B-87 DIAGNOSIS Required Special Tools: • MB991223: Test Harness Set • MB991502: Scan Tool (MUT-II) • MB991529: Diagnostic Trouble Code Check Harness STEP 1. Check method of the input signal Q: Which is to be used, the scan tool or the voltmeter to check the input signal? STEP 2. Check the input signal (by using scan tool CAUTION To prevent damage to scan tool MB991502, always turn the when the input signal enters. Q: Does the tone alarm of scan tool MB991502 sound when the input signal enters? to Inspection Procedure N-15 ( ). STEP 3. Check the input signal (by using a voltmeter). ground terminal 4 or 5 and ETACS-ECU terminal 9 of the (2)Check that the voltmeter indicator deflects once when the input signal enters. Q: Does the voltmeter indicator deflect? YES : Go to Step 4. to Inspection Procedure N-15 ( ). AC003081 AB 16 PIN MB991502 AC003083 16 PIN AB ETACS-ECU GROUNDED TERMINAL MB991529 |