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AUTO-CRUISE CONTROL TSB Revision ENGINE AND EMISSION CONTROL 17-19 STEP 5. Using scan tool MB991958, check data list item 02: CAUTION To prevent damage to scan tool MB991958, always turn the Item 02 auto-cruise control system, Set Switch. • When "SET" switch is at the ON position, the display on scan tool MB991958 should be "ON." • When "SET" switch is at the OFF position, the dis- play on scan tool MB991958 should be "OFF." (4) Set scan tool MB991958 to data reading mode for auto-cruise control system item 03, Resume Switch. • When "RESUME" switch is at the ON position, the dis- play on scan tool MB991958 should be "ON." • When "RESUME" switch is at the OFF position, the dis- play on scan tool MB991958 should be "OFF." (5) Turn the ignition switch to the "LOCK" (OFF) position. YES : It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use − How to Cope with Intermittent Malfunction . NO : Replace the PCM. Refer to , Auto-cruise Control. AC306409AF MB991911 MB991824 MB991827 |