Pinout Values and Diagnostic Parameters

PID/DATA monitor table (reference)

































*1
Calculated value; differs from terminal voltage
*2
MTX
*3
With cruise control switch

- Following PIDs are for the ATX models. If inspects for following PIDs, PID/Data Monitor Inspection [FS5A-EL]

Without Using the M-MDS

CAUTION:
- The PCM terminal voltages vary with change in measuring conditions and vehicle conditions. Always carry out a total inspection of the input systems, output systems, and PCM to determine the cause of trouble. Otherwise, a wrong diagnosis will be made.

1. Measure the voltage at each terminal.

- If any incorrect voltage is detected, inspect the related system(s), wiring harnesses and connector(s) referring to the Action column in the terminal voltage table.

Terminal voltage table (Reference)





































*1
With cruise control system
*2
Without advanced keyless entry and push button start system
*3
With advanced keyless entry and push button start system
*4
MTX

Inspection Using An Oscilloscope (Reference)

Cooling fan control





PCM terminals
- 1R(+)-body ground(-)

Oscilloscope setting
- 5 V/DIV (Y), 20 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up

APP sensor No.2 signal

Accelerator pedal released





Accelerator pedal depressed






PCM terminals
- 1X(+)-body ground(-)

Oscilloscope setting
- 2.5 V/DIV (Y), 2 ms/DIV (X), DC range

Vehicle condition
- Switch the ignition to ON.

Purge control





PCM terminals
- 1BA(+)-body ground(-)

Oscilloscope setting
- 10 V/DIV (Y), 20 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up

A/F sensor heater control





PCM terminals
- 2A(+)-body ground(-)

Oscilloscope setting
- 5 V/DIV (Y), 200 ms/DIV (X), DC range

Vehicle condition
- Idle (immediately after starting the engine)

HO2S heater control





PCM terminals
- 2B(+)-body ground(-)

Oscilloscope setting
- 5 V/DIV (Y), 1 s/DIV (X), DC range

Vehicle condition
- Idle (immediately after starting the engine)

OCV control signal





PCM terminals
- 2E(+)-body ground(-)

Oscilloscope setting
- 2 V/DIV (Y), 0.8 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up

CMP signal





PCM terminals
- 2S(+)-body ground(-)

Oscilloscope setting
- 1 V/DIV (Y), 25 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up

CKP signal





PCM terminals
- 2W(+)-body ground(-)

Oscilloscope setting
- 1 V/DIV (Y), 5 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up

IGT1, IGT2, IGT3, IGT4 control





PCM terminals
- IGT1(ignition coil No.1): 2G(+)-body ground(-)
- IGT2(ignition coil No.2): 2K(+)-body ground(-)
- IGT3(ignition coil No.3): 2L(+)-body ground(-)
- IGT4(ignition coil No.4): 2H(+)-body ground(-)

Oscilloscope setting
- 1 V/DIV (Y), 50 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up

Generator field coil control





PCM terminals
- 2AA(+)-body ground(-)

Oscilloscope setting
- 0.5 V/DIV (Y), 2 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up

Generator output voltage





PCM terminals
- 2AF(+)-body ground(-)

Oscilloscope setting
- 2 V/DIV (Y), 2 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up

Fuel injection (#1, #2, #3, #4) control





PCM terminals
- Fuel Injection No.1: 2BB(+)-body ground(-)
- Fuel Injection No.2: 2BC(+)-body ground(-)
- Fuel Injection No.3: 2BD(+)-body ground(-)
- Fuel Injection No.4: 2AZ(+)-body ground(-)

Oscilloscope setting
- 10 V/DIV (Y), 25 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up