Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Jeep >> 1993 >> Cherokee Base, 2D Utility, 2.5 P, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Self-Diagnostics >> Test SC-10A - Checking Brake Switch Circuit For Open

Test SC-10A - Checking Brake Switch Circuit For Open

NOTE: For connector terminal identification, refer to CONNECTOR IDENTIFICATION  . For appropriate wiring diagram, see appropriate chassis wiring diagram in the WIRING DIAGRAMS section.
  1. If DRB-II displays RELEASED at all times, go to TEST SC-10B  . If DRB-II does not display RELEASED at all times, disconnect brake switch. Inspect connector and clean and repair as needed.
  2. Connect a jumper wire between terminal No. 3 (White/Pink wire on XJ, Brown wire on ZJ) and terminal No. 6 (Black wire). Using DRB-II, read cruise control inputs monitor. If DRB-II does not display RELEASED, go to step 4).
  3. If DRB-II displays RELEASED, check brake switch adjustment. If brake switch is adjusted correctly, replace brake switch. Perform TEST SC-VER  . If brake switch is not adjusted correctly, adjust brake switch. Perform TEST SC-VER  .
  4. Connect jumper wire between brake switch connector terminal No. 3 and ground. Using DRB-II, read cruise control inputs monitor. If DRB-II displays RELEASED, repair open in Black wire to brake switch. If DRB-II does not display RELEASED, turn ignition switch to OFF position. Remove jumper wire. Disconnect PCM connector. Inspect connector and clean and repair as needed.
  5. Check brake switch sense circuit resistance between terminal No. 3 (White/Pink wire on XJ, Brown wire on ZJ) of brake switch connector and terminal No. 29 of PCM connector using an external ohmmeter.
  6. If resistance is more than 5 ohms, repair open White/Pink or Brown wire between brake switch and PCM. Perform TEST SC-VER  . If resistance is less than 5 ohms, replace PCM. Perform TEST SC-VER  .
scientia non olet · About Mike's Workshop Manuals