Diode Replacement
Action:Diode Replacement
1. Remove the ABS main fuse box from its bracket. Undo the two screws securing the relay base and pull it up to expose the diodes. Consult Table 4 to ascertain which diode is the defective one.
2. Sever one of the diode's leads at the crimp. Remove the insulating sleeve fitted over the crimp, Figure 5.
3. Solder one of the new diode's leads to the crimp. Be sure to install the new diode in the same direction as the old one, Figure 6. Compare with old diode or consult Table 4.
NOTE
Be careful to avoid heating the soldering point too long as this could damage the diode and cable insulation.
4. Cut off the remaining lead of the defective diode at the other crimp. Remove the insulating sleeve fitted over the crimp, Figure 7.
5. Solder the remaining lead of the new diode to the other crimp, Figure 8.
NOTE
Be careful to avoid heating the soldering point too long as this could damage the diode and cable insulation.
6. Insulate the soldered joints and the diode by means of insulating tape, Figure 9.
We also recommend changing the other diode (or the two remaining diodes) by repeating points 2 through 6 above.
Install the relay base and put the ABS main fuse box back in place. Check that the three fuses in the ABS main fuse box are intact.
Check the operation of the diodes by turning the ignition switch to the Drive position.
If the diodes are correctly connected, the ANTILOCK lamp and the TCS CTRL lamp, if equipped, should light up at the same time as the ignition is switched on.
Check the pump motor by depressing the brake pedal a few time until the pump starts. When it stops, check that the pump fuse in the ABS main fuse box is intact and that the ANTILOCK lamp and the TCS CTRL lamp, if equipped, have gone out.
If any diode has been installed in the wrong direction, a description of the fault symptom for the relevant diode will be found in Table 3.
Clear any fault codes that have been generated. Start the engine and check that the warning lamps go out shortly afterwards.