DTC 26

TCS DTC 26: TCS Solenoid
1. Verify the TCS DTC.
Is TCS DTC 28 indicated ?
YES-Do the appropriate troubleshooting for DTC 28.
NO-Go to step 2.
2. Turn the ignition switch OFF.
3. Disconnect the modulator unit 24P connector and ABS/TCS control unit connector A (26P).








4. Check for continuity between the appropriate ABS/TCS control unit connector A (26P) TCS 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 A (26P) 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 TCS solenoid circuit terminals to body ground with jumper wires (see table).








9. Check for continuity between the appropriate ABS/TCS control unit connector A (26P) solenoid circuit terminal and body ground (see table).
Is there continuity?
YES-Go to step 10.
NO-Repair open in the appropriate TCS solenoid circuit wire between the ABS/TCS control unit and the modulator unites
10. Remove the jumper wires from the modulator unit 24P connector.
11. Connect the modulator unit 24P connector.





12. Remove the TCS relay, and connect the TCS relay 4P connector terminal No. 2 to body ground with a jumper wire. The wire colors of the TCS relay 4P connector are BLU, RED/BLU, BRN/BLK, and GRN/ YEL.








13. Check the resistance between the appropriate ABS/TCS control unit connector A (26P) terminal and body ground (see table). NOR, NOL, NCR, NCL: 8 - 10 ohms (at 20°C, 68°F)
Is the resistance OK ?
YES-Go to step 14.
NO-Replace the modulator unites
14. Disconnect the modulator unit 24P connector, and remove the jumper wire from the TCS relay connector terminal.











15. Check for continuity between the appropriate ABS/TCS control unit connector A (26P) terminal and each of the other terminals listed (see table).
Is there continuity?
YES-Repair short in the appropriate wires between the ABS/TCS control unit and the modulator unit.
NO-Go to step 16.
16. Connect the modulator unit 24P connector.











17. Check for continuity between the appropriate ABS/TCS control unit connector A (26P) 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.