Note. Ignition timing is not adjustable on Esteem or Swift.
Scheme 21
- Ensure test switch terminal of test connector (located in underhood relay/fuse block) is not grounded. (Scheme 21) If test switch terminal is grounded, remove jumper wire and retest system. If test switch terminal is not grounded, go to next step.
- Turn ignition on. Measure voltage between test connector terminals No. 4 (ground) and No. 5 (test switch terminal). If reading is 10-14 volts, problem is intermittent or due to a faulty PCM. Go to INTERMITTENTS in «TROUBLE SHOOTING - NO CODES»(ref-91186) article. If reading is not 10-14 volts, check Purple/White wire (Esteem) or Purple/Green wire (Swift) for short to ground. If wire is okay, replace PCM.