Test M - Neutral Drive Switch-A/C Input
- Code 67 Displayed. When this code is displayed, determine which engine and system is being tested and proceed to correct step as listed.
- For 1.6L EFI/Turbo & 2.3L HSC/CFI models with Man. Trans., go to step 5).
- For all 1.6L Turbo models & 2.3L EFI/Turbo models with Man. Trans., go to step 7).
- For 2.3L EFI/Turbo SVO models with Octane Switch, go to step 8).
- For all other models, go to step 2).
- Turn key OFF and wait 10 seconds. Make sure heater control is in OFF position and that transaxle/transmission is in Neutral or Park. Disconnect ECA 60-pin connector. Inspect for and repair any damaged wiring. Install breakout box and reconnect ECA. Turn key ON, leaving engine OFF. Set DVOM to 20 volt scale. Measure voltage between test pin 30 and chassis ground. If less than 1.0 volts, proceed to step 4). If reading is 1.0 volts or higher, go to next step.
- Turn key OFF and wait 10 seconds. Install breakout box and connect ECA. Locate the neutral drive switch. Disconnect harness at switch. With DVOM on 200 ohm scale, measure resistance across switch contacts. If less than 5 ohms, correct open circuit in vehicle harness and repeat QUICK TEST. If 5 ohms or more, replace neutral drive switch and repeat QUICK TEST.
- Reconnect neutral drive switch. Leave breakout box and ECA connected. With DVOM on 20 volt scale, turn A/C control switch OFF. Turn key ON, leaving engine OFF. Measure voltage from test pin 10 to chassis ground. (On 2.3L Turbo, check for display of Continuous Code 18.) If 1.0 volt or more, repair short to power in A/C clutch circuit and repeat QUICK TEST. If less than 1.0 volt, replace ECA and repeat QUICK TEST.
- Turn key OFF and wait 10 seconds. Ensure that A/C is OFF (if equipped), transaxle is in Neutral, and clutch is released. Disconnect 60-pin connector at ECA. Inspect for and repair any damaged wiring. Install breakout box and reconnect ECA. With DVOM on 200 ohm scale, measure resistance between test pins 30 and 46. If resistance is less than 5 ohms, go to step 4). If 5 ohms or more, go to next step.
- Turn key OFF. With breakout box and ECA connected, place DVOM on 200 ohm scale. Locate neutral switch (on transaxle) and clutch switch (under dash). Disconnect wiring harness from both switches. Measure resistance of each switch across terminals. If both less than 5 ohms, go to step 4) of this test. If either or both measure 5 ohms or more, replace defective switch(es). Reconnect harness and repeat QUICK TEST.
- Turn key OFF and wait 10 seconds. Make sure A/C is OFF (if equipped). Disconnect 60-pin connector at ECA. Inspect for and repair any damaged wiring. Install breakout box, leaving ECA disconnected. With DVOM on 200 ohm scale, measure resistance between test pins 30 and 46. If less than 5 ohms, go to step 4) of this test. If 5 ohms or more, repair open circuit and repeat QUICK TEST.
- Turn key OFF and wait 10 seconds. Disconnect ECA 60-pin connector. Inspect for and repair any damaged wiring. Install breakout box and connect ECA. Set DVOM to 20 volt scale. Connect positive lead to test pin 30 and negative lead to test pin 46. Turn key ON, leaving engine OFF. Cycle octane switch several times while reading DVOM. If voltage changes from 0 to 5 volts, replace ECA and repeat QUICK TEST. If voltage does not change, EEC-IV system is good. Check turbo boost.
