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Home >> Mitsubishi >> 2002 >> Montero Limited >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0182: Fuel Temperature Sensor Circuit Low Input >> Test Procedure
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Test Procedure

  1. Turn ignition on. Using scan tool, check data list item No. 4A (fuel temperature sensor). Air temperature, as measured with a thermometer, and fuel temperature displayed on scan tool should be within 10 percent of each other. If temperature is not as specified, go to next step. If scan tool readings are as specified, problem is intermittent. See INTERMITTENT DIAGNOSTIC TROUBLE CODES . If scan tool readings are not as specified, go to next step.
  2. Measure resistance between fuel temperature sensor terminals No. 2 and 3 (component side). Resistance should be between 0.5-12.0 K ohms. If resistance is as specified, go to next step. If resistance is not as specified, replace fuel temperature sensor. Then go to step  5.
  3. Disconnect PCM connector D-108 and fuel temperature sensor 3-pin connector. See Figure and Figure . Check connectors for loose, damaged, or corroded terminals. If problem exists, repair or replace connectors. Go to step  5. If problem does not exist, go to next step.
  4. With fuel temperature sensor 3-pin connector and PCM D-108 connector disconnected, check continuity between ground and fuel temperature sensor 3-pin connector terminal No. 3 (Light Green/Red wire). If there is continuity, check intermediate 8-pin connector F-07, 14-pin connector E-113 and 43-pin connector D-111 for damage and repair as necessary. See Figure. If intermediate 8-pin connector F-07, 14-pin connector E-113 and 43-pin connector D-111 are OK, repair short to ground in wire between fuel temperature sensor 3-pin connector terminal No. 3 (Light Green/Red wire) and PCM connector D-108 terminal No. 51. Then go to next step. If there is no continuity, replace PCM, and go to next step.
  5. Test drive vehicle following OBD-II drive cycle Other Monitor pattern. See OTHER MONITOR  under OBD-II DRIVE CYCLES under VERIFYING REPAIRS. Check for DTCs. If DTC P0182 is output, go to step  1, and retry diagnostic procedure. If DTC P0182 is not output, inspection is complete.