Code 15 - Ignition Output Signal
- Turn ignition off. Remove ACG fuse (No. 15, 7.5-amp) from underdash fuse box for 10 seconds to reset ECM. Retrieve codes. If Code 15 does not appear, problem is intermittent. Inspect for poor connections at ECM, igniter unit, wiring harness connectors, and G102 ground terminal (located at valve cover). Test-drive vehicle and retest.
- If Code 15 exists, turn ignition off. Unplug 8-pin connector from igniter unit. Test for continuity between terminals "C" and "F". See Fig 1 . If continuity does not exist, repair open in Black wire between ground terminal G102 and 8-pin connector.
- If continuity exists, Unplug 6-pin connector from igniter unit. See Fig 2 . Connect ECM Test Harness (07LAJ-PT3010A ) to ECM harness, leaving ECM disconnected. Test for continuity between body ground and test terminals A21, A22, B3, B4, B6, and B8. If continuity exists at any terminal, repair short circuit.
- If continuity does not exist, test for continuity between igniter unit 6-pin connector terminal and corresponding terminal at ECM connectors. See ECM/IGNITOR UNIT CONNECTOR TERMINAL IDENTIFICATION
. If continuity does not exist, repair open circuit. If continuity exists, temporarily substitute known good igniter, then retest. If symptom/condition goes away, replace original igniter. If symptom/condition does not go away, temporarily substitute known good ECM, then retest system.ECM/IGNITOR UNIT CONNECTOR TERMINAL IDENTIFICATION
Ignitor Unit Connector Terminals ECM Connector Terminals Wire Color A B8 Blue B A22 Brown C A21 Pink D B3 Red E B4 Gray F B6 Green