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Engine Control Module (ECM) IO Signal


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                                  ENGINE CONTROL MODULE (ECM) I/O SIGNAL
                                                                                                                              ENGINE (DIAGNOSTICS)

5. Engine Control Module (ECM) I/O Signal
A: ELECTRICAL SPECIFICATION




               To B134                                   To B135                                  To B136                              To B137


         7 6 5 4 3              2 1             7 6 5 4 3                  2 1            6 5         4 3 2 1                   7 6 5 4 3 2 1
        17 16 15 14 13 12 11   10 9 8          19 18 17 16 15 14 13 12 11 10 9 8         16 15 14 13 12 11 10 9 8 7            17 16 15 14 13 12 11 10 9 8
        27 26 25 24 23 22 21   20 19 18        27 26       25 24       23 22 21 20       27 26 25 24 23 22 21 20 19 18 17      25 24       23 22 21 20 19 18
        34 33          32 31   30 29 28        35 34       33 32       31 30 29 28       35 34 33 32 31          30 29 28      31 30       29 28       27 26




                                                                                                                                                         EN-01812


                                      Con-                                           Signal (V)
                                              Termi-
        Content                      nector                      Ignition SW ON                                                             Note
                                              nal No.                                         Engine ON (Idling)
                                      No.                         (Engine OFF)
Crank-        Signal (+)             B135       10                       0                            -7 -- +7                Sensor output waveform
shaft posi- Signal (-)               B135       22                       0                                0                             --
tion sensor Shield                   B135       31                       0                                0                             --
              Signal                 B137       25                       0                            0 -- 0.9                          --
Rear oxy-
              Shield                 B137       31                       0                                0                             --
gen sen-
sor           GND
                                     B136       35                          0                              0                                 --
               (sensor)
Front oxy- Signal 1                  B134        3                     0 -- 1.0                            --                 Sensor output waveform
gen (A/F)
sensor        Signal 2               B134        2                     0 -- 1.0                            --                 Sensor output waveform
heater
Rear oxygen sensor
                                     B135        2                     0 -- 1.0                            --                 Sensor output waveform
heater signal
Engine        Signal                 B136       14                   1.0 -- 1.4                      1.0 -- 1.4               After warm-up the engine.
coolant
tempera-      GND
ture sen-                            B136       35                          0                              0                  After warm-up the engine.
              (sensor)
sor
                                                                                                                            "5" and "0" are repeatedly dis-
Vehicle speed signal                 B135       27                      0 or 5                          0 or 5
                                                                                                                            played when vehicle is driven.
Mass air      Signal                 B136       23                         --                        0.3 -- 4.5                           --
flow sen-     Shield                 B136       32                         0                             0                                --
sor           GND                    B136       31                         0                             0                                --
Intake air temperature
                                     B136       13                   0.3 -- 4.6                      0.3 -- 4.6                              --
sensor signal
Exhaust       Signal                 B136       24                         --                              --                                --
tempera-
ture sen-     GND
                                     B136       35                          0                              0                                 --
sor           (sensor)




                                                                   EN(H4DOTC)-19
                          ENGINE CONTROL MODULE (ECM) I/O SIGNAL
ENGINE (DIAGNOSTICS)

                           Con-                               Signal (V)
                                   Termi-
        Content           nector             Ignition SW ON                                              Note
                                   nal No.                             Engine ON (Idling)
                           No.                (Engine OFF)
                                                       Fully closed: 3.8 -- 4.9
Tumble        Signal       B136      27                                                                   --
                                                      Fully opened: 0.2 -- 0.9
generator
              Power
valve posi-                B136      16             5                              5                      --
              supply
tion sensor
RH            GND
                           B136      35             0                              0                      --
              (sensor)
                                                        Fully closed: 3.8 -- 4.9
Tumble        Signal       B136      26                                                                   --
                                                        Fully opened: 0.2 -- 0.9
generator
             Power
valve posi-                B136      16             5                              5                      --
             supply
tion sensor
LH           GND
                           B136      35             0                              0                      --
             (sensor)
Tumble generator valve
                           B134      9        0 or 10 -- 13               0 or 13 -- 14        Sensor output waveform
RH (open)
Tumble generator valve
                           B134      8        0 or 10 -- 13               0 or 13 -- 14        Sensor output waveform
RH (close)
Tumble generator valve
                           B134      11       0 or 10 -- 13               0 or 13 -- 14        Sensor output waveform
LH (open)
Tumble generator valve
                           B134      10       0 or 10 -- 13               0 or 13 -- 14        Sensor output waveform
LH (close)
Wastegate control sole-
                           B134      32       0 or 10 -- 13               0 or 13 -- 14        Sensor output waveform
noid valve
Starter switch             B137      8             0                           0                  Cranking: 8 -- 14
                                              ON: 10 -- 13                ON: 13 -- 14
A/C switch                 B137      16                                                                   --
                                                OFF: 0                      OFF: 0
Ignition switch            B137      15        10 -- 13                    13 -- 14                       --
                                              ON: 10 -- 13                ON: 13 -- 14
Neutral position switch    B137      9                                                                    --
                                                OFF: 0                      OFF: 0
Test mode connector        B137      14        10 -- 13                    13 -- 14                When connected: 0
Knock       Signal         B136      25           2.8                         2.8                          --
sensor      Shield         B136      33            0                           0                           --
Back-up power supply       B135      19        10 -- 13                    13 -- 14         Ignition switch "OFF": 10 -- 13
Control unit power sup-    B135       5        10 -- 13                    13 -- 14                        --
ply                        B135       6        10 -- 13                    13 -- 14                        --
Sensor power supply        B136      16            5                           5                           --
             #1            B135      18            0                       13 -- 14                    Waveform
Ignition     #2            B135      17            0                       13 -- 14                    Waveform
control      #3            B135      16            0                       13 -- 14                    Waveform
             #4            B135      15            0                       13 -- 14                    Waveform
             #1            B136       6        10 -- 13                     1 -- 14                    Waveform
Fuel injec- #2             B136       5        10 -- 13                     1 -- 14                    Waveform
tor          #3            B136       4        10 -- 13                     1 -- 14                    Waveform
             #4            B136       3        10 -- 13                     1 -- 14                    Waveform
Fuel pump Signal 1         B135      26          0 or 5                      0 or 5            Sensor output waveform
control unit Signal 2      B137      28        10 -- 13                    13 -- 14                        --
                                             ON: 0.5 or less             ON: 0.5 or less
A/C relay control          B133      33                                                                   --
                                             OFF: 10 -- 13               OFF: 13 -- 14
Radiator fan relay 1                         ON: 0.5 or less             ON: 0.5 or less
                           B135      25                                                                   --
control                                      OFF: 10 -- 13               OFF: 13 -- 14
Radiator fan relay 2                         ON: 0.5 or less             ON: 0.5 or less
                           B135      24                                                          Model with A/C only
control                                      OFF: 10 -- 13               OFF: 13 -- 14



                                              EN(H4DOTC)-20
                           ENGINE CONTROL MODULE (ECM) I/O SIGNAL
                                                                                              ENGINE (DIAGNOSTICS)

                            Con-                               Signal (V)
                                    Termi-
        Content            nector             Ignition SW ON                                             Note
                                    nal No.                            Engine ON (Idling)
                            No.                (Engine OFF)
Malfunction indicator                                                                           Light "ON": 1 or less
                            B134      17           --                            --
lamp                                                                                            Light "OFF": 10 -- 14
Engine speed output         B134      23           --                   0 -- 13, or more              Waveform
Purge control solenoid                        ON: 1 or less               ON: 1 or less
                            B134      14                                                      Sensor output waveform
valve                                         OFF: 10 -- 13              OFF: 13 -- 14
             Signal         B136      22       1.7 -- 2.4                   1.1 -- 1.6
Manifold
             Power
absolute                    B136      16            5                             5
             supply                                                                                       --
pressure
sensor       GND
                            B136      35            0                             0
             (sensor)
                                                                                            The valve operates when fuel
Fuel tank     Signal        B136      21        2.3 -- 2.7                    2.3 -- 2.7    filler cap is removed and rein-
pressure                                                                                                  stalled.
sensor        GND
                            B136      35            0                             0                       --
              (sensor)
Fuel tank pressure con-                       ON: 1 or less                 ON: 1 or less
                            B134      12                                                                  --
trol solenoid valve                           OFF: 10 -- 13                 OFF: 13 -- 14
                                              ON: 1 or less                 ON: 1 or less
Drain valve                 B134      13                                                                  --
                                              OFF: 10 -- 13                 OFF: 13 -- 14
Fuel tank sensor control                      ON: 1 or less                 ON: 1 or less
                            B134      24                                                                  --
valve                                         OFF: 10 -- 13                 OFF: 13 -- 14
Fuel level sensor           B136      20       0.12 -- 4.75                  0.12 -- 4.75                --
Fuel temperature sen-                                                                          Ambient temperature:
                            B136      12        2.5 -- 3.8                    2.5 -- 3.8
sor signal                                                                                          25



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