If the blinking rhythm on one side is faster than the other, with "fast" side, the lamp is defective or there is a wire break.
For all other faults, the relay is most often the cause. Remove relay to test.
Since 10/89, issue.
1. Disconnect the relay and check individual contacts for current flow. At the same time, set the kiloohm measurement limit on the ohmmeter (kOhm). There must be current flow or resistance between the following contacts: a - e; a-f; c - a; c - d; c-e; c-f; c-g; c-h; h - a; h - c; h - d; h - e; h-f; h-g.
2. No current should flow between other contacts, or the resistance should be equal to infinity.
From 9/85 to 9/89, issue.
1. Connect via auxiliary cables plus batteries to terminal B, battery ground to terminal E. Then connect 2 direction indicator lamps in parallel between terminals L and E or E and ground (21 W). The lamps must flash in a normal rhythm, otherwise replace the relay.
2. If a new relay is not available, carefully insert a thin wire into the relay plug between terminals B and L
Attention! In this case, the sensitive contacts of the relay must not be damaged. Before installation, bend the ends of the wire so that there are no sharp edges. Install the faulty relay. The connection plugs are so long that the relay will be inserted despite the jumper.
3. Turn on the ignition. If you now turn on the turn signal lever, the corresponding lamp will light up without flashing. You can set the rhythm by turning the lever on and off. However: Install a new relay as soon as possible.
4. If the direction indicators do not light despite the jumper of the contacts, the fault lies in the switch or electrical wires.