ATGE/A340 Automatic Trans (GE), page 86

AT1–86
AT340E (2JZ–GE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING

2  Check if A/T fluid is too hot.

ON

Pattern        "MANU" Mode  Pattern Select
Select Switch  Indicator Light  Switch Point

MANU        ON

MANU        OFF

SE6653
Q04452

C  1. Turn ignition siwtch ON.
   2. Check "MANU" mode indicator light when pat-
      tern select switch is pushed in to ON.

OK  "MANU" mode indicator light comes on and stays
    on.

Hint  If the A/T fluid temp. becomes too hot, the
      "MANU" mode indicator light flashes for several
      seconds and goes off.  The driving mode then
      automatically changes from MANU mode to the
      NORM mode.

OK

NG  Wait until the A/T fluid temp. is reduced.

3  Check voltage between terminal M of ECM connector and body ground.

ON

Check Harness A
ECM

M
A  18

SE6653
AT8772

P  1. Connect the Check Harness A to the ECM
      (See page EG–404).
   2. Turn igntion switcn ON.

C  Measure voltage between the terminal M of ECM
   connector and body ground when the pattern se-
   lect switch is set to the MANU (MANUAL) position
   and NORM (NORMAL) position.

OK
Pattern select switch        Voltage
MANU                         7.5 – 14 V
NORM                         Below 1.5 V

Hint  The ECM uses the Normal pattern signal if the
      Manual signal is not input.

NG

OK  Proceed to next circuit inspection shown on
    matrix chart. (See page AT1–58)

Go to step 4.