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Home >> Nissan-Datsun >> 1996 >> Sentra Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes 1.6L >> Circuit Tests >> DTC P1320 - Ignition Signal

DTC P1320 - Ignition Signal

  1. Check Ground Circuit

    Turn ignition switch to OFF position. Restart engine. If engine starts, go to step 5). If engine does not start, turn ignition switch to OFF position and disconnect power transistor harness connector. See Fig 1. Using an ohmmeter, check continuity between power transistor harness connector terminal No. 2 (Black wire) and ground. If no continuity exists, repair open in Black wire. If continuity exists, go to next step.

  2. Check Power Supply

    Disconnect ignition coil harness connector. Turn ignition switch to ON position. Using a voltmeter, measure voltage between ignition coil harness connector terminal No. 7 (Black/Red wire) and ground. If battery voltage does not exist, repair fault in Black/Red wire as required. If battery voltage exists, go to next step.

  3. Check Power Transistor Input Signal Circuit

    Turn ignition switch to OFF position. Disconnect ECM harness connector. See Figure. Using an ohmmeter, check for continuity between ECM harness connector terminal No. 1 and power transistor harness connector terminal No. 1 (White/Black wire). See Figure. If no continuity exists, repair open in White/Black wire as required. If continuity exists, inspect ignition coil and power transistor. See the SYSTEM/COMPONENT TESTS article. Replace ignition coil and/or power transistor if necessary.

  4. Check Resistor Input Signal Circuit

    Strip tape covering resistor/condenser. Using an ohmmeter, check continuity between resistor/condenser harness connector terminal No. 1 and ignition coil harness connector terminal No. 8 (Green wire). If no continuity exists, repair open in Green wire. If continuity exists, check continuity between resistor/condenser harness connector terminal No. 2 (Gray/Red wire) and ECM harness connector terminal No. 2 (White wire). If no continuity exists, repair open in Gray/Red or White wire as required. If continuity exists, go to next step.

  5. Check Component

    Inspect resistor/condenser. Measure resistance across resistor/condenser terminals. Resistance should be 2200 ohms. Replace resistor/condenser as required and perform FINAL CHECK .
Fig 1: Locating Ignition Coil/Power Transistor Harness Connector
G96I11484Courtesy of NISSAN MOTOR CO., U.S.A.
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