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Home >> Suzuki >> 2003 >> Vitara 2D Utility, 4WD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0464: Fuel Level Sensor Circuit - Intermittent >> Diagnosis & Repair Procedure
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Diagnosis & Repair Procedure

NOTE: For better performance and results of this diagnostic procedure, usage of appropriate wiring diagram is recommended. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
NOTE: Perform all voltage and resistance tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use an ohmmeter to isolate wiring harness shorts or opens.
  1. If engine system check has been performed, go to next step. If engine system check has not been performed, perform A-4: ENGINE SYSTEM CHECK  under SYSTEM TESTS, then go to next step.
  2. Perform intermittent test procedure. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article. If an intermittent problem is found, repair as necessary and repeat DTC CONFIRMATION TEST  . If an intermittent problem is not found, check for current or pending DTC using scan tool. See RETRIEVING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. If DTC P0464 resets, go to next step. If DTC P0464 does not resets, problem was intermittent, no more diagnostic is necessary.
  3. Turn ignition switch to LOCK position. Disconnect fuel level sensor in-line 12-pin harness connector L15-R01. See Figure . Check fuel level sensor in-line harness connector for contamination and poor terminal contact. If contamination or poor terminal contact is found, repair as necessary and repeat DTC CONFIRMATION TEST  . If contamination or poor terminal contact is not found, measure resistance between fuel level sensor in-line harness connector R01 terminals No. 3 (Black/Yellow wire) and No. 4 (Blue/White wire). See FUEL LEVEL SENSOR RESISTANCE  table. See Figure . If resistances are as specified, check for open or short circuit in Blue/White wire between ECM and fuel level sensor, or in Black/Yellow wire between fuel level sensor and ground. If open or short circuit is found, repair a necessary and repeat DTC CONFIRMATION TEST  . If open or short circuit is not found, substitute ECM with a known good unit and repeat DTC CONFIRMATION TEST  .
    FUEL LEVEL SENSOR RESISTANCE

    Fuel Level Ohms
    Empty 90-130
    Half 32.5
    Full 1-10

    If any resistance is not as specified, check for open or short circuit in Blue/White wire between ECM and fuel level sensor, or short circuit in Black/Yellow wire between fuel level sensor and ground. If open or short circuit is found, repair a necessary and repeat DTC CONFIRMATION TEST  . If open or short circuit is not found, replace fuel gauge. See COMBINATION METER under REMOVAL & INSTALLATION in INSTRUMENT PANELS - GRAND VITARA, VITARA & XL7 article. After repair, repeat DTC CONFIRMATION TEST  .

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