System Input Testing: 1991
- System input tests should be performed if no trouble codes are stored when performing SELF-DIAGNOSTICS .
- System input tests cycle each cruise control switch and sensor. Use analog voltmeter or Multi-Use Tester (MB991341) for system input check. Use multi-use tester according to operating instructions provided with tester. Connect leads of analog voltmeter between cruise control terminal and ground terminal of self-diagnostic connector. SeeFigure .
- Turn ignition on and check items No. 1-3 on INPUT CODE CHART. SeeFigure 0r 10. Start engine and check items No. 4 and 5 on INPUT CODE CHART. To display results of each input check, press SET switch while holding RESUME switch in ON position. Read codes. Codes will display if circuit tested is okay.