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warning lights on harley davidson speedometer
Another function of the smtssm or HFSM module is to detect a fault in the turn signal circuit.When the current flow is large or there is a short circuit with the ground wire, the power supply to the steering lamp will be automatically stopped. Record the fault code at the same time. If the battery fuse is blown and appears on the history DTC. If bl123 or b1124 is selected, it is necessary to check whether the brown and blue purple turn signal circuits are there is an intermittent or accidental short circuit to the ground. Generally, both turn signal lamps on the same side are
There are four main reasons for not working and no fault code. Turn signal output or input line is broken road; Accessory circuit is open; Left or right (the side corresponding to the turn signal lamp not on) Turn signal switch failure; Tsmtssm or HFSM failure.The specific inspection methods are as follows. First, the left or right turn signal function is abnormal.Test (i.e. the side that is not lit).
1. With the ignition switch on, operate the left and right turn signal switches and observe the phase whether the turn signal lamp on one side should flash. If one side does not work (such as the right side), carry out the second step of inspection.
2 when the ignition switch is off, find the tsmtssm or Hd-42682 disconnect box of HFSM. Unplug tsmtssm or HFSM connector and turn HD The two sockets of the 42682 disconnect box are connected to both ends of the connector .
3. Turn on the ignition switch and press the right turn signal switch without letting go. Use the DC voltage gear of the multimeter to measure the No. 7 junction on the disconnection box and the ground wire voltage of. It should be noted that 12V voltage is required when pressing the right turn signal button exists.
4. Disconnect the right switch connector (i.e. connector 22).
5. Use the DC voltage gear of the multimeter to measure the voltage between port 1 on terminal 22 B connector and whether there is 12V voltage between the ground wires. If voltage cannot be measured, or if the voltage is too low, it means that the orange / white wire is open circuit and needs to be repaired. If voltage and storage If the battery voltage is low, go to the next step to check the connectivity test of the right turn signal circuit.
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