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Home >> Mazda >> 2011 >> Tribute s Grand Touring, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Symptom Troubleshooting [Transaxle] >> Pinpoint Test 3: Transmission Control Switch (TCS) Does Not Operate Correctly

Pinpoint Test 3: Transmission Control Switch (TCS) Does Not Operate Correctly

TRANSMISSION CONTROL SWITCH (TCS) DOES NOT OPERATE CORRECTLY - PINPOINT TEST 3

PINPOINT TEST 3 TCS DOES NOT OPERATE CORRECTLY
STEP INSPECTION ACTION
1 TEST THE INSTRUMENT CLUSTER (IC)
  • Connect the scan tool.
  • Using the scan tool, monitor the TCS PID while cycling the TCS.
  • Does the TCS PID cycle from yes to no? 
Yes See SYMPTOM TROUBLESHOOTING CHART - INSTRUMENT CLUSTER .
No GO to the next step.
2 CHECK SJB FUSE 30 (5A)
  • Key in OFF position.
  • Check Smart Junction Box (SJB) fuse 30 (5A).
  • Is the resistance less than 5 ohms? 
Yes GO to the next step.
No GO to step 4.
3 TEST THE TCS POWER CIRCUIT FOR AN OPEN
  • Disconnect: Selector Lever Harness 0518-01.
  • Disconnect: SJB fuse 30 (5A).
  • Measure the resistance between the selector lever harness 0518-2096 pin 6, circuit (Y/L), harness side and the output side of SJB fuse 30 (5A).
  • Is the resistance less than 5 ohms? 
Yes GO to step 5.
No REPAIR circuit CBP30 (Y/L). RECONNECT all components. TEST the system for normal operation.
4 TEST THE TCS POWER CIRCUIT FOR A SHORT TO GROUND
  • Disconnect: Selector Lever Harness.
  • Disconnect SJB fuse 30 (5A).
  • Measure the resistance between selector lever harness 0518-2096 pin 8, circuit (Y/L) and ground.
  • Is the resistance less than 10,000 ohms? 
Yes GO to step 6.
No REPAIR circuit (Y/L). TEST the system for normal operation.
5 TEST THE TCS SIGNAL CIRCUIT FOR AN OPEN
  • Disconnect: PCM Transaxle C175B.
  • Measure the resistance between the selector lever harness 0518-2096 pin 5, circuit (L/O) and PCM 0140-275B pin 27, circuit (BR/G).
  • Is the resistance less than 5 ohms? 
Yes GO to step 7.
No REPAIR circuit BR/G. RECONNECT all components. TEST the system for normal operation.
6 TEST THE TCS SIGNAL CIRCUIT FOR A SHORT TO GROUND
  • Measure the resistance between selector lever harness 0518-2096 pin 5, circuit (BR/G) and ground.
  • Is the resistance greater than 10,000 ohms? 
Yes GO to the next step.
No REPAIR circuit (BR/G). TEST the system for normal operation.
7 TEST THE TCS
  • Measure the resistance between selector lever 0518-2096 pin 5, circuit (B/G) and 0518-2096 pin 6, component side, while cycling the TCS
  • Is the resistance less than 5 ohms when pressed and greater than 10,000 ohms when released? 
Yes INSTALL a new PCM. See PCM REMOVAL/INSTALLATION - 2.5L/3.0L . TEST the system for normal operation.
No INSPECT the selector lever wiring harness for damage and REPAIR as necessary. If the selector lever wiring harness is not damaged, INSTALL a new selector lever knob. See SELECTOR LEVER REMOVAL/INSTALLATION . TEST the system for normal operation.