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Home >> Infiniti >> 2004 >> QX56 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 213 (Body Control Modules) >> Self-Diagnostic System >> Tire Pressure Monitor Diagnostic System Check

Tire Pressure Monitor Diagnostic System Check

WARNING: This page is about a different car, the 2002 Pontiac Grand Am and 2002 Oldsmobile Alero. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The presence of DTCs which begin with "U" indicate some other module on Class 2 serial data line is not communicating.

  1. Connect scan tool to Data Link Connector (DLC). DLC is located under driver side of instrument panel. If scan tool powers up, go to next step. If scan tool does not power up, go to TEST A: SCAN TOOL DOES NOT POWER UP  under SYSTEM TESTS.
  2. Turn ignition switch to RUN position. Attempt to establish communication with Electronic Brake Control Module (EBCM). If scan tool communicates with EBCM, go to next step. If scan tool does not communicate with EBCM, go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
  3. Using scan tool, select DISPLAY DTCS function and retrieve any EBCM DTCs. If scan tool displays any DTCs that start with a "U", go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS. If scan tool does not display DTCs that start with a "U", go to next step.
  4. If scan tool does not display any EBCM DTCs, go to next step. If scan tool displays any EBCM DTCs, perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  .
  5. If scan tool displays DTC C1245, repair tire pressure monitoring system as necessary. See DTC C1245: HIGH OR LOW TIRE PRESSURE  . If scan tool does not display DTC C1245, repair tire pressure monitoring system by symptom. See SYSTEM TESTS  .

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