1.CHECK BACK-UP LAMP RELAY EXCITATION COIL SIDE

1. Turn the ignition switch OFF.
2. Remove the back-up lamp relay.
3. Check continuity of the back-up lamp relay excitation coil side.

   Back-up lamp relay | Continuity
   Terminal
   1 | 2 | Existed

Does continuity exist?
YES>>GO TO 2.
NO>>Replace the back-up lamp relay.
2.CHECK BACK-UP LAMP RELAY CONTACT SIDE

1. Apply battery voltage to the back-up lamp relay between terminals 1 and 2.
2. Check continuity of the back-up lamp relay contact side.

   Back-up lamp relay | Condition | Continuity
   Terminal | Voltage
   6 | 7 | Apply | Existed
   Not apply | Not existed

Is the measurement value normal?
YES>>Back-up lamp relay is normal.
NO>>Replace the back-up lamp relay.