Antilock Brake System

ABS DTC 34: Solenoid
1. Verify the DTC.
Is DTC 54 indicated?
YES-Do the appropriate troubleshooting for DTC 54.
NO-Go to step 2.
2. Turn the ignition switch OFF.
3. Disconnect the modulator unit 24P connector and the ABS/TCS control unit connector C (12P).








4. Check for continuity between the appropriate ABS/TCS control unit connector C (12P) solenoid circuit terminal and body ground (see table).
Is there continuity ?
YES-Repair short to body ground in the appropriate solenoid circuit wire between the ABS/TCS control unit and the modulator unit.
NO-Go to step 5.
5. Connect the modulator unit 24P connector.








6. Check for continuity between the appropriate ABS/TCS control unit connector C (12P) solenoid circuit terminal and body ground (see table).
Is there continuity?
YES-Replace the modulator unit.
NO-Go to step 7.
7. Disconnect the modulator unit 24P connector.








8. Connect the appropriate modulator unit 24P connector solenoid circuit terminal to body ground with a jumper wire (see table).








9. Check for continuity between the appropriate ABS/TCS control unit connector C (12P) solenoid circuit terminal and body ground (see table).
Is there continuity?
YES-Go to step 10.
NO-Repair open in the appropriate solenoid circuit wire between the ABS/TCS control unit and the modulator unit.
10. Remove the jumper wire from the modulator unit 24P connector.
11. Connect the modulator unit 24P connector.





12. Connect the ABS fail-safe relay 4P connector terminal No. 2 to body ground with a jumper wire. The wire colors of the ABS fail-safe relay connector are WHT/GRN, BRN/BLK, BLK, and YEL/GRN.








13. Check the resistance between the appropriate ABS/TCS control unit connector C (12P) terminal and body ground (see table).
IN: 8 - 10 ohms (at 20°C, 68°F)
OUT: 3 - 5 ohms (at 20°C, 68°F)
Is the resistance OK ?
YES-Go to step 14.
NO-Replace the modulator unit.
14. Disconnect the modulator unit 24P connector, and remove the jumper wire from the ABS fail-safe relay 4P connector.














15. Check for continuity between the appropriate ABS/TCS control unit connector C (12P) terminal and all other ABS and TCS solenoid circuit terminals (see table).
Is there continuity?
YES-Repair short in the appropriate wires between the ABS/TCS control unit and the modulator unites
NO-Go to step 16.
16. Connect the modulator unit 24P connector.














17. Check for continuity between the appropriate ABS/TCS control unit connector C (12P) terminal and all other ABS and TCS solenoid circuit terminals (see table).
Is there less than 3 ohms ?
YES-Replace the modulator unit.
NO-Check for loose ABS/TCS control unit connectors. If necessary, substitute a known-good ABS/TCS control unit, and recheck.