Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Toyota >> 1996 >> RAV4 2D Utility, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Tests W/Codes >> Circuit Tests >> DTC P1300 - Igniter Circuit Malfunction >> Diagnosis & Repair

Diagnosis & Repair

  1. Check for spark at misfiring cylinder. See IGNITION CHECKS in BASIC TESTING article. If spark is present, go to next step. If spark is not present, go to step 4).
  2. Check for open or short in IGF circuit between ECM and igniter. Igniter is located at center rear of engine compartment. See appropriate wiring diagram in WIRING DIAGRAMS . Repair as necessary. If circuit is okay, go to next step.
  3. Disconnect Black 5-pin igniter connector. Access ECM behind glove box. Turn ignition on. Measure voltage between ground and terminal No. 3 (Blue/Yellow wire) at ECM E4 connector. See Figure. If voltage is 4.5-5.5 volts, replace igniter. If voltage is not 4.5-5.5 volts, replace ECM and retest.
  4. Check for open or short in IGT circuit (Black wire) between ECM and igniter. See appropriate wiring diagram in WIRING DIAGRAMS . Repair as necessary. If circuit is okay, go to next step.
  5. Access ECM behind bottom center of instrument panel, in front of console. Backprobing ECM connector, measure voltage between ground and terminal No. 20 (Black wire) at ECM E4 connector while cranking engine. If voltage is .1-4.5 volts, go to next step. If voltage is not .1-4.5 volts, replace ECM and retest.
  6. Disconnect Black 5-pin igniter connector. Backprobing ECM connector, measure voltage between ground and terminal No. 20 (Black wire) at ECM E4 connector while cranking engine. If voltage is .1-4.5 volts, go to next step. If voltage is not .1-4.5 volts, replace ECM and retest.
  7. Turn ignition on. Measure voltage between ground and terminal No. 3 (Black/Orange wire) at igniter wiring harness connector. See Fig 1. If voltage is 9-14 volts, go to next step. If voltage is not 9- 14 volts, check and repair igniter power source circuit. See appropriate wiring diagram in WIRING DIAGRAMS article.
  8. Check for an open or short in wiring harness between ignition switch and ignition coil, and between ignition coil and igniter. Repair as necessary. If wiring is okay, go to next step.
  9. Check ignition coil. See IGNITION SYSTEM in SYSTEM/COMPONENT TESTS article. Replace coil as necessary. If coil is okay, replace igniter.
Fig 1: Identifying Igniter Connector Terminals
G95I31375Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
scientia non olet · About Mike's Workshop Manuals