1995 ISUZU TROOPER Workshop Manual

CLEAR DTC
Remark: If you clear the DTC (Diagnosis Trouble
Codes) you will not be able to read any codes
recorded
during the last Trouble.
Remark: To be able to use the DTC again to identify
a problem you will need to reproduce the fault or
the problem. This may require a new test drive or
just turning the ignition on (this depends on the
nature
of the fault).
1. IF you have a TECH1:
(1) Connect the TECH1 if it is still not con-
nected
GOTHROUGH TECH1 CON-
NECTION.
(2) Push "F4" and answer "Yes" to the
question
"Do you really want to clear the
codes?"
CD When a malfunction remains as it is
the
TECH 1 displays "4L30E CODES
NOT
CLEARED". This means that the
problem is still there or that the
recovery was
not done please GOTO
DTCCHECK.
® When a malfunction has been re­
paired and the recovery is
done the
TECH1 displays "4L30E CODES
CLEARED".
2. IF you have no TECH1:
(
1) Short the Diagnosis Connector C-92 ter­
minal 1 to terminal 2 (ground) (Fig. 7A-
9c).
CD IF it is flashing and the flash is 0.4
seconds ON and 0.4 second OFF
without interruption, this means that
there is no DTC. The DTCs are
already cleared.
Fig. 7A-9c
AUTOMATIC TRANSMISSION (4L30-E) 7 A-65
(2) IF a code is flashed, wait until the lamp is
flashing.
(3) Push POWER SWITCH then WINTER
SWITCH
(do this within 3 second).
CD If you continue to have malfunctions:
This means that the problem is still
there or that the recovery was not
done please see DTC CHECK.
(4) IF you can not clear the DTC:
CD GOTHROUGH TCM PRECAUTIONS.
@ Disconnect the TCM.
@ Reconnect the TCM.
@ IF the DTC is not cleared: GOTO TCM
MEM-CAL REPLACEMENT.

7 A-66 AUTOMATIC TRANSMISSION (4L30-E)
DTCCHECK
1 Diagnosis Trouble Codes (DTC) have been
identified
by TECH1 or FLASHING CODES.
2. You have written the list of the DTC. The order
of the malfunctions has no meanings for this
TCM. Usually only one or two malfunctions
should
be set for a given problem.
3. Check directly the DTCs you identified. The
DTC are sorted by number. See Chart 2:
DIAGNOSTIC TROUBLE CODES (Page 7A-71).
'

AUTOMATIC TRANSMISSION (4L30-E) 7 A~7
FO: DATA LIST QUICK CHECK
TECH 1
DISPLAY
CONDITONS CORRECT VALUE
BATIERY VOLTAGE
Ignition ON 9 V < voltage < 16 V
(V)
FORCE MOTOR CUR. Engine at idle speed approx. 0.9 A
CALCULAT. PRESS. Parking
brake on
approx. 4.0 bar Selector lever position "D"
SOLENOID 1-2/3-4
Vehicle traveling at a speed of: approx. ACTIVE
50 km/h (32 mph) with selector lever in
position
"2" or approx. 70 km/h (44 mph)
with selector lever in position "3"
SOLENOID 2-3
Vehicle traveling at a speed of: approx. ACTIVE
10 km/h_(6 mph) with selector lever in
position
"L" or approx. 30 km/h (18 mph)
with selector lever in position "2"
BAND APPLY SOL. Engine at idle speed
approx. 99% DC
Selector lever position "L"
TCC SOLENOID Vehicle traveling at a speed of approx. ON
80 km/h (50 mph)
Selector lever position "D"
TCC SLIP RPM Constant engine speed 0 ± 10 RPM
Selector lever position "D"
TCCon
BRAKE SWITCH
Ignition ON ACTIVE
Brake pedal pressed
AT
INPUT SPEED Engine speed :;:; 200 rpm Engine speed: (RPM)
Output speed> 1024 rpm
Selector lever position "D", "3", "2", "L"
AT OUTPUT SPEED Output speed:;:; 0 km/h (0 mph) Output speed:
Engine speed >
3000 rpm (MPH/KPH)
Selector lever position "D", "3", "2", "L" ·
BAROMETER
Engine at idle speed 0.9-1.0 bar
SENSOR approx. 0.02 V
SELECTOR POS. Ignition ON Dependent on
Shift through all selector lever positions selector lever position
P, R, N, D, 3, 2, L
C!C OlD LOCKOUT When 0/D OFF signal detected while ACTIVE
cruise control system is in use
ACTUAL GEAR Vehicle traveling at a speed of approx. - 4 -
100 km/h (62 mph)
Selector lever position
"D"
NOTE:
(*1) .... FOR DIAGNOSIS OF A DTC SEE CHART 2: DIAGNOSTIC TROUBLE CODES (DTC)
tPAGE..ll)
FOR
DIAGNOSIS
SEE*1
DTC25
or 26
DTC35
DTC 31
or 41
DTC32
or 42
DTC34
or 44
DTC33
or 43
DTC33
or 43
DTC55
or 56
DTC 13
or 62
DTC 11
or13
-
DTC53
or 54
-
DTC 61

7A-68 AUTOMATIC TRANSMISSION (4l30-E)
FO: DATA LIST QUICK CHECK (continued)
TECH 1 DISPLAY
CONDITONS CORRECT VALUE FOR
DIAGNOSIS
SEE*1
SELECTOR PIN A Ignition ON ACTIVE DTC 53
Selector lever position: or 54
"P11, "R'', "311 or "211
SELECTOR PIN B Ignition ON ACTIVE DTC53
Selector lever position: or 54
"R11
, "N","D'' or "3''
SELECTOR PIN C Ignition ON ACTIVE DTC 53
Selector lever position: or 54
"D'', "311
, "211 or "L''
SELECTOR PIN P Ignition ON ACTIVE DTC 53
Selector lever position: or 54
"P11
, "N11, "311 or "Lu
TPS SIGNAL Ignition ON
Throttle body in idle speed position 0.1 V to 0.96 V (0%) DTC 21
Throttle body in full load position 4.9
V or less (99%) or 22
KICK DOWN SWITCH Ignition ON ACTIVE DTC 52
Depress accelerator pedal to stop
A!C REQUEST Engine running. Air conditioning ON. ACTIVE CHECK WIRE
Compressor
engaged. FROM TCM
CONNECTOR
C-91
TERMINAL
DB FOR
OPEN
CIRCUIT.
TRANSM. OIL
TEMP.
Engine running 70 -120°C/158 -248°F DTC 15
approx. 1.00 -3.10 V or16
COOLANT TEMP SW.
Ignition ON: Engine warm COLD (~ 63°C) DTC 51
WARM (> 70°C)
WINTER SW.
(-D-) Ignition ON ACTIVE TRANS
MIS-
Selector
lever position "D" SION
Press "WINTER" switch OPERATING
WINTER
LAMP Engine running ON MODE
TEST Sff-flAG£ Selector lever position "D" -,~ Press "WINTER" switch
POWER SWITCH Ignition ON ACTIVE TRANSMIS-
Press "POWER" switch SION
OPERATING
POWER LAMP Engine running ON MODE TEST
3!'Ef'AGE Press "POWER" switch l~·
• IF ALL VALUES ARE CORRECT, CONTINUE DIAGNOSIS WITH F5: ACTUATOR TEST QUICK CHECK.
NOTE:
*1
FOR DIAGNOSIS OF A DTC SEE CHART 2: DIAGNOSTIC TROUBLE CODES (DTC)
(PAGE Itt-
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