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Component Tests and General Diagnostics




PCM INSPECTION [LF, L3]

Without Using the M-MDS

California emission regulation applicable model

NOTE:
- The PCM terminal voltage can vary with the conditions when measuring and changes due to aged deterioration on the vehicle, causing false diagnosis. Therefore determine comprehensively where the malfunction occurs among the input systems, output systems, and the PCM.






Terminal Voltage Tables (Part 1):





Terminal Voltage Tables (Part 2):





Terminal Voltage Tables (Part 3):





Terminal Voltage Tables (Part 4):





Terminal Voltage Tables (Part 5):





Terminal Voltage Tables (Part 6):





Terminal Voltage Tables (Part 7):





Terminal Voltage Tables (Part 8):





Terminal Voltage Tables (Part 9):





Terminal Voltage Tables (Part 10):






*1
ATX
*2
MTX

Except for California emission regulation applicable model with LF ATX

NOTE:
- The PCM terminal voltage can vary with the conditions when measuring and changes due to aged deterioration on the vehicle, causing false diagnosis. Therefore determine comprehensively where the malfunction occurs among the input systems, output systems, and the PCM.







































*1
California emission regulation applicable model
*2
Except for California emission regulation applicable model

Except for California emission regulation applicable model with LF MTX and L3

NOTE:
- The PCM terminal voltage can vary with the conditions when measuring and changes due to aged deterioration on the vehicle, causing false diagnosis. Therefore determine comprehensively where the malfunction occurs among the input systems, output systems, and the PCM.







































*1
ATX
*2
MTX
*3
California emission regulation applicable model
*4
Except for California emission regulation applicable model

Inspection Using An Oscilloscope (Reference)

Shift solenoid A signal





PCM terminals
- 1A*1, 1B*2 (+)-body ground (-)

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

Vehicle condition
- 4GR

Shift solenoid B signal





PCM terminals
- 1E*1, 1C*2 (+)-body ground (-)

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

Vehicle condition
- 1GR

Shift solenoid C signal





PCM terminals
- 1F*1, 1D*2 (+)-body ground (-)

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

Vehicle condition
- 1GR or 2GR

Pressure control solenoid (+) signal





PCM terminals
- 1M*1, 1G*2 (+)-body ground (-)

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

Vehicle condition
- All of the following conditions are met.

- Ignition switch is turned to the ON position. (engine off)
- P or N position
- CTP

Pressure control solenoid (-) signal





PCM terminals
- 1N*1, 1H*2 (+)-body ground (-)

Oscilloscope setting
- 200 mV/DIV (Y), 1 ms/DIV (X), DC range

Vehicle condition
- All of the following conditions are met.

- Ignition switch is turned to the ON position. (engine off)
- P or N position
- CTP

Vehicle speed signal (ATX)





PCM terminals
- 1AW*1, 1J*2 (+)-body ground (-)

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

Vehicle condition
- Vehicle speed is 32 km/h {20 mph}.

Vehicle speed signal (MTX)





PCM terminals
- 2M (+)-2N (-)

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

Vehicle condition
- Vehicle speed is 10 km/h {6.2 mph}.

Input/turbine speed sensor (+) signal





PCM terminals
- 1AO*1, 1M*2 (+)-body ground (-)

Oscilloscope setting
- 500 mV/DIV (Y), 1 ms/DIV (X), DC range

Vehicle condition
- Idle after warm-up (no load, P/S off, A/C off)

Input/turbine speed sensor (-) signal





PCM terminals
- 1AG*1, 1Q*2 (+)-body ground (-)

Oscilloscope setting
- 500 mV/DIV (Y), 1 ms/DIV (X), DC range

Vehicle condition
- Idle after warm-up (no load, P/S off, A/C off)

Cooling fan control signals





PCM terminals
- 1Y*1, 1W*3, 1R*4(+)-body ground (-)

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

Vehicle condition
- Idle after warm up (engine speed approx. 700 rpm, A/C ON)

APP signal

Accelerator pedal is released





Accelerator pedal is depressed






PCM terminals
- 1AC*1, 1AL*3, 1AO*4(+)-body ground (-)

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

Vehicle condition
- Ignition switch is turned to the ON position. (engine off)

A/F sensor heater control signal (California emission regulation applicable model)





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

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

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

A/F sensor heater control signal (except for California emission regulation applicable model)





PCM terminals
- 2G*3, 2BG*4(+)-body ground (-)

Oscilloscope setting
- 5 V/DIV (Y), 125 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

CMP sensor signal





PCM terminals
- 2S*1,*4, 2V*3(+)-body ground(-)

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

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

CKP sensor signal





PCM terminals
- 2W*1,*4, 2U*3(+)-body ground(-)

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

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

OCV signal





PCM terminals
- 2E*1,*4, 2AF*3(+)-body ground (-)

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

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

A/F sensor signal (except for California emission regulation applicable model)





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

Oscilloscope setting
- 0.2 V/DIV (Y), 500 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

Generator output voltage signal





PCM terminals
- 2AJ*1,*4, 2AM*3 (+)-body ground (-)

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


Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

Purge control signal





PCM terminals
- 2C*1,*4, 2AN*3 (+)-body ground (-)

Oscilloscope setting
- 2 V/DIV (Y), 0.1 s/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

Generator field coil control signal





PCM terminals
- 2AI*1,*4, 2AQ*3(+)-body ground (-)

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

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

Fuel injection 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 (no load, P/S off, A/C off)

IGT1, IGT2, IG3, IG4 control signals





PCM terminals*1, *4
- IGT1 (No.1): 2BA(+)-body ground (-)
- IGT2 (No.2): 2AW(+)-body ground (-)
- IGT3 (No.3): 2AX(+)-body ground (-)
- IGT4 (No.4): 2AT(+)-body ground (-)

PCM terminals*3
- IGT1 (No.1): 2BE(+)-body ground (-)
- IGT2 (No.2): 2BF(+)-body ground (-)
- IGT3 (No.3): 2BG(+)-body ground (-)
- IGT4 (No.4): 2BH(+)-body ground (-)

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

Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load)

*1
California emission regulation applicable model
*2
Except for California emission regulation applicable model
*3
Except for California emission regulation applicable LF ATX model
*4
Except for California emission regulation applicable LF MTX, L3 model

Using M-MDS

NOTE:
- PIDs for the following parts are not available on this model. Go to the appropriate part inspection page.

- CMP sensor Testing and Inspection
- Main relay Testing and Inspection

1. Connect the M-MDS to the DLC-2.






2. Turn the ignition switch to ON position.

3. Measure the PID value.

- If PID value is not within the specification, follow the instructions in Action column.

NOTE:
- The PID/DATA MONITOR function monitors the calculated value of the input/output signals in the PCM. Therefore, an output device malfunction is not directly indicated as a malfunction of the monitored value for the output device. If a monitored value of an output device is out of specification, inspect the monitored value of the input device related to the output control.
- The simulation items that are used in the ENGINE CONTROL SYSTEM OPERATION INSPECTION are as follows.

- ACCS, ALTF, ARPMDES, EVAPCP, FAN_DUTY, FP, FUELPW1, GENVDSD, HTR11, HTR12, HTR13*1, IMRC, IMTV, INJ_1, INJ_2, INJ_3, INJ_4, LPS*2, SEGRP, SSA/SS1*2, SSB/SS2*2, SSC/SS3*2, SSD/SS4*2, SSE_SS5*2, test, VT DUTY1 Wt

*1
California emission regulation applicable model
*2
LF ATX
PID/DATA monitor table (reference)

PID/Data Monitor Table (Reference) (Part 1):





PID/Data Monitor Table (Reference) (Part 2):





PID/Data Monitor Table (Reference) (Part 3):





PID/Data Monitor Table (Reference) (Part 4):





PID/Data Monitor Table (Reference) (Part 5):





PID/Data Monitor Table (Reference) (Part 6):





PID/Data Monitor Table (Reference) (Part 7):





PID/Data Monitor Table (Reference) (Part 8):





PID/Data Monitor Table (Reference) (Part 9):






*1
California emission regulation applicable model
*2
LF ATX
*3
MTX
*4
Calculated value; differs from terminal voltage
*5
Refrigerant pressure switch (middle) turns off when the refrigerant pressure is 1.26-1.49 MPa {12.9-15.1 kgf/cm6, 184-214 psi}
*6
Refrigerant pressure switch (middle) turns on when the refrigerant pressure is 1.69-1.84 MPa {17.3-18.7 kgf/cm2, 247-265 psi}
*7
Except for California emission regulation applicable model
*8
LF MTX, L3, and California emission regulation applicable model with LF ATX
*9
Except for California emission regulation applicable model with LF ATX
*10
Except for California emission regulation applicable model with LF MTX, L3
*11
California emission regulation applicable model with LF ATX

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