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12.1 Signaling Device (SD) - Horn   >   11 Diagnosis - Function Test

Function test: Switch ignition to position 1, press horn switch (S4/2). Horn sounds. Function Test Explanation Signal pickup and activation module (SAM) left front (N10/1) and electronic ignition lock control module (N73) both control the horn function. Horn function can be checked using HHT. Horn function test with HHT can be conducted through: SAM control module (N10/1) or Horn function Function test: Switch ignition to position 1, press horn switch (S4/2). Horn sounds. There are following functions to choose from: 1. Control module version coding 2. Diagnostic Trouble Code (DTC) Memory 3. Actual values 4. Activation Caution: To prevent damage to the control modules, the connectors on the control modules must only be removed or connected with the ignition OFF .