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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 100 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0351, DTC P0352, DTC P0353, DTC P0354, DTC P0355, DTC P0356, DTC P0357 Or DTC P0358 >> Diagnosis & Repair

Diagnosis & Repair

WARNING: This page is about a different car, the 2003 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check spark plug and spark of misfiring cylinder. See SPARK TEST under IGNITION CHECKS in BASIC DIAGNOSTIC PROCEDURES article. If okay, go to next step. If not okay, go to step  4.
  2. Disconnect I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil connector. Disconnect the E4 ECM connector. See Fig 1-Fig 2 . Check continuity between the wire harness side connectors. See IGNITION COIL/ECM IF SIGNAL TERMINAL CONTINUITY CHECK  table. If continuity is to specification, go to next step. If continuity is not to specification, repair or replace harness and connector as necessary.
    Fig 1: Identifying Ignition Coil Connector Terminals
    G00239989Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 2: Identifying ECM E4 Connector Terminals
    G00239990Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    IGNITION COIL/ECM IF SIGNAL TERMINAL CONTINUITY CHECK

    Terminals No. Specification
    (I1-2) - IF1L (E4-6) Continuity
    (I2-2) - IF2R (E4-5) Continuity
    (I3-2) - IF2L (E4-4) Continuity
    (I4-2) - IF1R (E4-7) Continuity
    (I5-2) - IF2L (E4-4) Continuity
    (I6-2) - IF1R (E4-7) Continuity
    (I7-2) - IF1L (E4-6) Continuity
    (I8-2) - IF2R (E4-5) Continuity
    (I1-2) Or IF1L (E4-6) - E1 (E3-7) No Continuity
    (I2-2) Or IF2R (E4-5) - E1 (E3-7) No Continuity
    (I3-2) Or IF2L (E4-4) - E1 (E3-7) No Continuity
    (14-2) Or IF1R (E4-7) - E1 (E3-7) No Continuity
    (15-2) Or IF2L (E4-4) - E1 (E3-7) No Continuity
    (16-2) Or IF1R (E4-7) - E1 (E3-7) No Continuity
    (I7-2) Or IF1L (E4-6) - E1 (E3-7) No Continuity
    (I8-2) Or IF2R (E4-5) - E1 (E3-7) No Continuity
  3. Turn ignition switch on. Measure voltage between terminals of E4 and E3 ECM connectors. See Fig 3. See ECM E3 & E4 VOLTAGE SPECIFICATIONS  table. If voltage is to specification, replace ignition coil assembly. If voltage is not to specification, check and replace ECM.
    Fig 3: Identifying ECM E3 & E4 Connector Terminals
    G00239991Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    ECM E3 & E4 VOLTAGE SPECIFICATIONS

    Terminals No. Specification
    IF1L (E4-6) - E1 (E3-7) 4.5-5.5 Volts
    IF2L (E4-4) - E1 (E3-7) 4.5-5.5 Volts
    IF1R (E4-7) - E1 (E3-7) 4.5-5.5 Volts
    IF2R (E4-5) - E1 (E3-7) 4.5-5.5 Volts
  4. Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil connector. See Fig 1. Disconnect E2 or E4 ECM connector. See Fig 4. Check the continuity between the wire harness side connectors. See IGNITION COIL/ECM IGT SIGNAL TERMINAL CONTINUITY CHECK  table.
    Fig 4: Identifying ECM E2 & E4 Connector Terminals
    G00239992Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    IGNITION COIL/ECM IGT SIGNAL TERMINAL CONTINUITY CHECK

    Terminals No. Specification
    (I1-3) - IGT1 (E2-17) Continuity
    (I2-3) - IGT2 (E4-13) Continuity
    (I3-3) - IGT3 (E2-16) Continuity
    (I4-3) - IGT4 (E4-12) Continuity
    (15-3) - IGT5 (E2-27) Continuity
    (I6-3) - IGT6 (E4-11) Continuity
    (I7-3) - IGT7 (E2-26) Continuity
    (I8-3) - IGT8 (E4-10) Continuity
    (I1-3) Or IGT1 (E2-17) - E1 (E3-7) No Continuity
    (I2-3) Or IGT2 (E4-13) - E1 (E3-7) No Continuity
    (I3-3) Or IGT3 (E2-16) - E1 (E3-7) No Continuity
    (I4-3) Or IGT4 (E4-12) - E1 (E3-7) No Continuity
    (I5-3) Or IGT5 (E2-27) - E1 (E3-7) No Continuity
    (I6-3) Or IGT6 (E4-11) - E1 (E3-7) No Continuity
    (I7-3) Or IGT7 (E2-26) - E1 (E3-7) No Continuity
    (I8-3) Or IGT8 (E4-10) - E1 (E3-7) No Continuity
  5. Measure the voltage between the terminals of the E2, E3 and E4 ECM connectors when the engine is cranked. See Fig 5. See ECM E2, E3 & E4 VOLTAGE CHECK  table. If voltage is okay, go to next step. If voltage is not okay, check and replace ECM.
    Fig 5: Checking Ignition Coil Circuits At ECM
    G00239993Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    ECM E2, E3 & E4 VOLTAGE CHECK

    Terminals No. Specification
    IGT1 (E2-17) - E1 (E3-7) .1-4.5 Volts
    IGT2 (E4-13) - E1 (E3-7) .1-4.5 Volts
    IGT3 (E2-16) - E1 (E3-7) .1-4.5 Volts
    IGT4 (E4-12) - E1 (E3-7) .1-4.5 Volts
    IGT5 (E2-27) - E1 (E3-7) .1-4.5 Volts
    IGT6 (E4-11) - E1 (E3-7) .1-4.5 Volts
    IGT7 (E2-26) - E1 (E3-7) .1-4.5 Volts
    IGT8 (E4-10) - E1 (E3-7) .1-4.5 Volts
  6. Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil connector. See Fig 1. Measure the voltage between the terminals of the E2, E3 and E4 ECM connectors when engine is cranked. See Fig 5. See ECM IGT1, IGT2, IGT3, IGT4, IGT5, IGT6, IGT7 OR IGT8 CONNECTOR VOLTAGE CHECK  table. If voltage is to specification, go to next step. If voltage is not to specification, check and replace ECM.
    ECM IGT1, IGT2, IGT3, IGT4, IGT5, IGT6, IGT7 OR IGT8 CONNECTOR VOLTAGE CHECK

    Terminals No. Specification
    IGT1 (E2-17) - E1 (E3-7) 0.1-4.5 Volts
    IGT2 (E4-13) - E1 (E3-7) 0.1-4.5 Volts
    IGT3 (E2-16) - E1 (E3-7) 0.1-4.5 Volts
    IGT4 (E4-12) - E1 (E3-7) 0.1-4.5 Volts
    IGT5 (E2-27) - E1 (E3-7) 0.1-4.5 Volts
    IGT6 (E4-11) - E1 (E3-7) 0.1-4.5 Volts
    IGT7 (E2-26) - E1 (E3-7) 0.1-4.5 Volts
    IGT8 (E4-10) - E1 (E3-7) 0.1-4.5 Volts
  7. Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil connector. See Fig 1. Turn the ignition switch to ON and START position. Measure the voltage between the terminal of the wire harness side connector and body ground. See IGNITION COIL POWER SOURCE VOLTAGE CHECK  table. If voltage is to specification, repair ignition coil assembly. If voltage is not to specification, go to next step.
    IGNITION COIL POWER SOURCE VOLTAGE CHECK

    Terminals No. Specification
    I1-1 - Body Ground 9-14 Volts
    I2-1 - Body Ground 9-14 Volts
    I3-1 - Body Ground 9-14 Volts
    I4-1 - Body Ground 9-14 Volts
    I5-1 - Body Ground 9-14 Volts
    I6-1 - Body Ground 9-14 Volts
    I7-1 - Body Ground 9-14 Volts
    I8-1 - Body Ground 9-14 Volts
  8. Remove INJ fuse from the engine room No. 2 relay block. Check continuity of INJ fuse. Disconnect the I1, I2, I3, 14, I5, I6, I7 or I8 ignition coil connector. Remove IG2 relay from the engine room No. 1 relay block. Check continuity between wire harness side connectors. See IGNITION COIL/IG2 RELAY CONTINUITY CHECK  table. If not to specification, repair or replace harness and connector. If to specification, replace ignition coil assembly.
    IGNITION COIL/IG2 RELAY CONTINUITY CHECK

    Terminals No. Specification
    (I1-1 ) - (IG2 Relay Terminal No. 3) Continuity
    (I2-1) - (IG2 Relay Terminal No. 3) Continuity
    (I3-1) - (IG2 Relay Terminal No. 3) Continuity
    (I4-1) - (IG2 Relay Terminal No. 3) Continuity
    (I5-1) - (IG2 Relay Terminal No. 3) Continuity
    (I6-1 ) - (IG2 Relay Terminal No. 3) Continuity
    (I7-1 ) - (IG2 Relay Terminal No. 3) Continuity
    (I8-1 ) - (IG2 Relay Terminal No. 3) Continuity
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