With Automatic Transaxle (ATX)

POWERTRAIN CONTROL MODULE (PCM) REMOVAL / INSTALLATION

CAUTION:
^ Powertrain control module is sensitive to static electrical charges. If exposed to these charges, damage may result.
^ If service of powertrain control module is required, use the following safeguards to avoid damage to components.
1. Leave the PCM in their original packaging until ready to install in vehicles.
2. Avoid touching PCM connector pins.
3. Avoid laying modules on nonconductive surfaces.

1. Remove in the order shown in the figure, referring to REMOVAL NOTE.
2. Install in the reverse order of removal.







1. Negative battery cable
2. Console
3. PCM connector
4. PCM

REMOVAL NOTE
^ The PCM stores information about vehicle operating conditions and uses this information to compensate for component tolerance. When an emission related component is replaced, Keep Alive Memory (KAM) should be cleared to erase the information stored by the PCM from the original component.

INSPECTION USING SST (104 PIN BREAKOUT BOX)
1. Disconnect the PCM connectors.




2. Connect the SST to the PCM as shown.
3. Measure the voltage at each terminal.
4. If any PCM terminal voltage is incorrect, check the related input or output devices and wiring. If not problem is found, replace the PCM. (Refer to above.)

INSPECTION USING SST (NGS)




1. In the passenger compartment, connect the SST to the data link connector-2 as shown in the figure.




2. Referring to the NGS instruction manual, select the "PID/ DATA MONITOR AND RECORD" function.
3. Referring to the 1996 Service Highlight, inspect each PCM input/output signal.

NOTE:
- The "PID/DATA MONITOR AND RECORD" function is to monitor the calculated value of input/output signals in the PCM. Deviation in the value does not always indicate malfunction in the related input/output devices.
- For inspection of the input/output signals other than in the link monitor table, check voltage at the applicable PCM terminal by using the SST (104 Pin Breakout Box).

4. If normal output signal cannot be detected when all input signals are normal, replace the PCM.
















TERMINAL VOLTAGE (REFERENCE) CHARTS