DTC P1300/14 Igniter Circuit Malfunction No.1. DTC P1310/15 Igniter Circuit Malfunction No.2. DTC P1320/14 Igniter Circuit Malfunction No.

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1 DI68 DIAGNOTIC EINE DIIO06 DTC P00/4 Igniter Circuit Malfunction No. DTC P0/5 Igniter Circuit Malfunction No. DTC P0/4 Igniter Circuit Malfunction No. CIRCUIT DECRIPTION A DI (Direct Ignition ystem) has been adopted. The DI improves the ignition timing accuracy, reduces highvoltage loss, and enhances the overall reliability of the ignition system by eliminating the distributor. The DI is a cylinder simultaneous ignition system which ignites cylinders simultaneously with ignition coil. In the cylinder simultaneous ignition system, each of the spark plugs is connected to the end of the secondary winding. High voltage generated in the secondary winding is applied directly to the spark plugs. The sparks of the spark plugs pass simultaneously from the center electrode to the ground electrode. The engine ECU determines ignition timing and outputs the ignition signals (IGT) for each cylinder. Based on IGT signals, the power transistors in the igniter cuts off the current to the primary coil in the ignition coil is supplied simultaneously to the spark plugs via the hightension cords that are connected to the both ends of the secondary coil. At the same time, the igniter also sends an ignition confirmation signal (IGF) as a failsafe measure to the engine ECU. From Battery IGT Igniter Camshaft Position ensor G IGF No. Cylinder Ignition Coil From Battery No.6 Cylinder IGT Igniter Crankshaft Position ensor NE Engine ECU No. Cylinder Ignition Coil From Battery No.5 Cylinder IGT Igniter Various ensors No. Cylinder TACH Ignition Coil No.4 Cylinder To Tachometer A05857 FZFE EINE UP

2 DIAGNOTIC EINE DI69 DTC No DTC Detecting Condition Trouble Area P00/4 P0/5 P0/4 No IGF signal to engine ECU for 6 consecutive IGT signals during engine running No IGF signal to engine ECU for 6 consecutive IGT signals during engine running No IGF signal to engine ECU for 6 consecutive IGT signals during engine running Open or short in IGF or IGT circuit from ignition coil to engine ECU. Ignition coil No. (w/ Igniter) Engine ECU Open or short in IGF or IGT circuit from ignition coil to engine ECU. Ignition coil No. (w/ Igniter) Engine ECU Open or short in IGF or IGT circuit from ignition coil to engine ECU. Ignition coil No. (w/ Igniter) Engine ECU WIRI DIAGRAM WR 4 IN Engine ECU Engine Room J/B 0 E AM B N WR Battery IG F7 Fusible Link Block D IGN B 7 6 Cowl ide J/B LH Ignition witch Noise Filter Ignition Coil and Igniter No. BW WB 4 Ignition Coil and Igniter No. BW WB 4 Ignition Coil and Igniter No. WB BR B R 0 IGT 9 IGT BW 8 L IGT BW BW IGF 4 WB ED A0600 FZFE EINE UP

3 DI70 INPECTION PROCEDURE HINT: DIAGNOTIC EINE Read freed frame data using hand held tester. Because freeze frame records the engine conditions when the malfunction is detected, when troubleshooting it is useful for determining whether the vehicle was running or stopped, the engine warmed up or not, the fuel airratio lean or rich, etc. at the time of the malfunction. DTC P00/4 is for the ignition circuit of No. and No.6 cylinders. DTC P0/5 is for the ignition circuit of No. and No.5 cylinders. DTC P0/4 is for the ignition circuit of No. and No.4 cylinders. Check spark plug and spark (ee page ). IG Go to step 4. Check for open and short in harness and connector in IGF signal circuit between engine ECU and ignition coil No., No. No. (ee page IN9). Repair or replace harness or connector. Disconnect ignition coil No., No., No. connectors and check voltage between terminal IGF of engine ECU connector and body ground. ON IGF (+) A0047 (a) Disconnect the ignition coil No., No., No. connectors. (b) Remove the glove compartment door. (c) Turn the ignition switch ON. Measure voltage between terminal IGF of engine ECU connector and body ground. : Voltage: V Replace ignition coil No., No., No.. FZFE EINE UP

4 DIAGNOTIC EINE DI7 Check and replace engine ECU (ee page IN 9). 4 Check for open and short in harness and connector in, IGT, signal circuit between engine ECU and ignition coil No., No., No. (ee page IN9). Repair or replace harness or connector. 5 Check voltage between terminals IGT,, of engine ECU connector and body ground. TART IGT (+) IGT (+) Remove the grove compartment door. Measure voltage between terminals IGT,, of engine ECU connector and body ground when engine is cranked. : Voltage: More than 0. V and less than 4.5 V IGT (+) A05855 IGT 0V IGF 0V IGT/IGF signal waveform V/ Division Reference: INPECTION UI OCILLOCOPE During idling, check waveform between terminals IGT,, and E of engine ECU. HINT: The correct waveform are as shown. IGT, IGT signal waveform is same as the IGT signal waveform. 0m sec./division (Idling) FI6680 Check and replace engine ECU (ee page IN 9). FZFE EINE UP

5 DI7 DIAGNOTIC EINE 6 Disconnect ignition coil No., No., No. connector and check voltage between terminals IGT,, of engine ECU connector and body ground. TART IGT (+) IGT (+) IGT (+) A05855 (a) Disconnect the ignition coil No., No., No. connectors. (b) Remove the glove compartment door. Measure voltage between terminals IGT,, of engine ECU connector and body ground when engine is cranked. : Voltage: More than 0. V and less than 4.5 V Replace ignition coil No., No., No.. 7 Check ignition coil No., No., No. power source circuit. BE665 A055 ON TART (+) A0855 Disconnect the ignition coil No., No., No. connectors. Measure voltage between terminal of ignition coil (w/ ignitor) connector and body ground, when ignition switch is turned to ON and TART position. : Voltage: 94 V Repair ignition coil No., No., No. power source circuit. 8 Check for open and short in harness and connector between ignition switch and ignition coil No., No., No. (ee page IN9). Repair or replace harness or connector. FZFE EINE UP

6 DIAGNOTIC EINE DI7 9 Check EFI main relay (Marking: EFI) (ee page 44). FI Replace EFI main relay (Marking: EFI). Replace ignition coil No., No.,,No.. FZFE EINE UP