automatic transmission ISUZU TROOPER 1995 Manual Online

7 A-64 AUTOMATIC TRANSMISSION (4L30-E)
FS: ECU CONTROL
The purpose of the FB: ECU CONTROL mode is to change the current of force motor solenoid.
SELECT MODE F6:NOT USED F7:NOT USED F8:ECU CONTROL
(F8)
FORCE MOTOR CTL.
i: INCREASE .J..: DECREASE (YES)
(YES)
FORCE MOTOR CUR.
* O.OOA CALCULAT. PRESS.
3.7 bar
(i,.J..)
(EXIT) lr
SELECT MODE
FO: DATA LIST Fl: NOT USED F2: TROUBLE CODE
(i,.J..)
SELECT MODE F3: SNAPSHOT F4: CLEAR CODES F5: ACTUATOR TEST
(i,.J..)
SELECT MODE F6: NOT USED
F7: NOT USED F8: ECU CONTROL
You can change the current of force
motor solenoid by i or .J.. key.

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-
IIIII

AUTOMATIC TRANSMISSION (4L30-E) 7 A-69
CHART 1
DIAGNOSIS CONNECTOR AND VOLTAGE SUPPLY TEST
HOf AT All TIMES
r
L
GRN/WHT
FUSE C-14 15A
H-7 4
A4 C-90 DIAGNOSIS
CONNECTOR
(C-92) r------
1 I
----J 2
BLKI ORN
HOT IN ON OR START
FUSE C-8
15A I
I
__ _I
FUSE BOX
HOT AT ALL TIMES
---
l
A FUSE FL-3 30A
I I
I
I
H-13
BLKJYEL
1
[_ --
RED/WHT
L-___ _j
2
X-12
:1?.---- -:~t~v
I }-I t·---I L _______ _j
---r-12
H-42/o 8
3
BLK
RED/GRN
""--------i~ TO ENGINE
..- CONTROL
MODULE
(ECM)
YELl
BLK BLK!ORN
D16
BLKI
ORN
Cl Dl C-91 A7 AS C-90
RELAY& FUSE BOX
~------------------------BATTERY DIAGNOSTIC · · I
I INPUT INPUT GROUND IGNITION I
I INPUT I
TRANSMISSION
CONTROL MODULE
(TCM)
I SERIAL DATA
------------------------1 CB C-91
RED
YEL/BLU
L T GRN/BLU BLKIBLU
,_1_, ~n
I I ________ J
C12 C-2 r------------
1 I
I I
1...--------_J DATA LINK CONNECTOR (C-9)
ENGINE CONTROL MODULE (ECM)

7A-70 AUTOMATIC TRANSMISSION (4L30-E)
CHART 1
DIAGNOSIS CONNECTOR AND VOLTAGE SUPPLY TEST
TECH 1 REFERS TO CHART 1 WHEN THE EQUIPMENT IS CORRECTLY CONNECTED, BUT NO DATA (WITH IGNITION ON) IS RECEIVED
FROM TECH 1.
• PERFORM TECH 1 SELF-TEST . IS TECH 1 OK?
~ ~
• IGNITION SWITCH OFF . I SEE TECH 1 OPERATOR'S MANUAL. I • DISCONNECT TCM CONNECTOR C-90 AND C-91 .
• IGNITION SWITCH ON .
• CONNECT VOLTMETER BETWEEN TERMINAL A4 AND GROUND TERMINAL C1 OR D1 OF TCM CONNECTOR.
•
THEN CONNECT VOLTMETER BETWEEN TERMINAL A7 OR AS AND GROUND TERMINAL C1 OR D1 OF TCM
CONNECTOR.
DO BOTH DISPLAYS INDICATE
BATTERY VOLTAGE?
+ ~ • IGNITON SWITCH OFF. I CHECK FUSE OR WIRE FOR OPEN. I • CONNECT OHMMETER BETWEEN TERMINAL 2 OF 3-PIN DATA LINK CONNECTOR C-9 AND TERMINAL CS OF
TCM CONNECTOR C-91.
•
THEN CONNECT OHMMETER BETWEEN TERMINAL 1 OF
2-PIN DIAGNOSTIC CONNECTOR C-92 AND TERMINAL D16 OF TCM CONNECTOR C-91
• THEN CONNECT OHMMETER BETWEEN TERMINAL 2 OF 2-PIN DIAGNOSTIC CONNECTOR C-92 AND TERMINAL C1 OR D1 OF TCM CONNECTOR C-91.
DO BOTH DISPLAYS INDICATE APPROXIMATELY 0 OHMS?
~ ~ • CHECK FOR SHORT BETWEEN TERMINAL CS AND I CHECK WIRE FOR OPEN. I GROUND AND BETWEEN TERMINAL CS AND B+. IF OK, GOTO TCM MEM-CAL REPLACEMENT.
____________ _,,(

AUTOMATIC TRANSMISSION (4L30-E) 7 A-71
CHART 2: DIAGNOSTIC TROUBLE CODE (OTC)
I v
' FOR
DTC MALFUNCTION DIAGNOSIS
SEE PAGE
11 OUTPUT
SPEED FAILURE 7A -74
13 ENGINE SPEED FAILURE 7A -78
15 TRANSMISSION OIL TEMPERATURE SHORT TO PLUS OR OPEN 7A-80
16 TRANSMISSION OIL TEMPERATURE SHORT TO GROUND 7A-82
21 THROTTLE POSITION SENSOR SHORT TO PLUS OR OPEN 7A-84
22 THROTTLE POSITION SENSOR SHORT TO GROUND 7A-86
23 THROTTLE
POSITION SENSOR CONNECTOR OPEN 7A-88
25
SUPPLY VOLTAGE TOO LOW 7A-90
26 SUPPLY VOLTAGE TOO HIGH 7A-92
31 SOLENOID 1-2/3-4 SHORT TO GROUND OR OPEN 7A-94
32
SOLENOID 2-3 SHORT TO GROUND OR OPEN 7A-96
33 TCC
HIGH SHORT TO PLUS OR OPEN 7A-98
34
BAND APPLY SOLENOID SHORT TO GROUND OR OPEN 7A-102
35 FORCE MOTOR OPEN OR SHORT TO PLUS OR GROUND 7A-104
36 SHIFT HIGH SHORT TO GROUND OR OPEN 7A-106
37 TORQUE MANAGEMENT SERIAL LINE FAULTY 7A-108
41 SOLENOID 1-2/3-4 SHORT TO PLUS 7A-110
42 SOLENOID 2-3 SHORT TO PLUS 7A-112
43 TCC HIGH SHORT TO GROUND 7A-114
44
BAND APPLY SOLENOID SHORT TO PLUS 7A-116
46 SHIFT HIGH SHORT TO PLUS 7A-118
51 ENGINE COOLANT SWITCH SHORT TO GROUND, PLUS OR OPEN 7A-120
52 KICK DOWN ALWAYS ON OR SHORT TO GROUND 7A-122
53 MODE SWITCH IN P OR N OR R BAD POSITION 7A-124
54
MODE SWITCH ILLEGAL POSITION 7A-126
55 BRAKE
SWITCH SHORT TO GROUND OR OPEN 7A-128
56 BRAKE
SWITCH
SHORT TO PLUS 7A-130
61 GEAR ERROR 7A-132
62 DOWNSHIFT PROTECTION 7A-134
63
EPROM CSUM FAILURE 7A-137
82 SHIFT OR BAND APPLY SOLENOIDS FAULTY DURING DRIVING 7A-138

7A-72 AUTOMATIC TRANSMISSION (4L30-E)
CHART 3: TRANSMISSION AND TCM IDENTIFICATION
Chart 3 contains a list of all important information concerning rear axle ratio, Transmission Control Module
(TCM), and transmission identification.
VEHICLE
Type Engine
lsuzu/ 3.2L V6 Trooper
ISUZU TROOPER
2 3
Rr axle TCM
Ratio
ISUZU
Parts
No.
4.555 8-16218-439-0
8-16218-449-0
The
identification plate is located on the left-hand side
of the transmission above the mode switch.
Alpha
Code
JA
JB
AT Transmission identification on vehicle identification plate :
1. Model code (GW) 2. Calibration code
3. Production serial number
4. Production
part number
4
Calibration
Code
G16
Fig. 7A-10
TRANSMISSION
lsuzu Part
No. Model Code
8-960 17-587-0 GW
(4X4)
TCM IDENTIFICATION:
A. ISUZU part number B. Model of car C. DELCO part number D. Application E. Service TCM number
F. Broadcast code

AUTOMATIC TRANSMISSION (4L30-E) 7A-73
CHART 5: F5: ACTUATOR TEST QUICK CHECK
Before carrying out the Actuator Test, the selector lever should be placed in selector position "N ".
The ignition should be switched ON, engine not running.
TECH 1 DISPLAY
NOTES CORRECT RESULT FOR
DIAGNOSIS
SEE*1
SOLEN. 1-2/3-4 Press arrow up (ON)
"Click" heard from DTC31
Press
arrow down (OFF) transmission or 41
SOLENOID 2-3 Press arrow up (ON) "Click" heard from DTC 32
Press arrow down (OFF) transmission or 42
SHIFT SOLENOID Press arrow up (ON)
"Click" heard from DTC 82
Press arrow down (OFF) transmission
TCC SOLENOID Not used --
TCC HIGH (D) Press arrow up (ON)
"Click" heard from DTC33
Press
arrow down (OFF) transmission or 43
ATF LAMP Press arrow up (ON) A/TOIL TEMP lamp A/TOIL TEMPERA-
Press
arrow down (OFF) ON TURE INDICATOR
TEST (PAGE
~ 41)
POWER LAMP
Press arrow up (ON) POWER lamp ON TRANSMISSION Press arrow down (OFF) OPERATING
WINTER
LAMP Press arrow up (ON)
WINTER lamp ON MODE
TEST
Press arrow down (OFF) (P1'\(3E 1 42)
CHK. TRN. LAMP Press arrow up (ON) CHECK TRANS lamp CHECK TRANS
Press arrow down (OFF) ON CHECK (12AGE .11:8)
ABS OFF LAMP Not used - -
NOTE:
(*1) FOR DIAGNOSIS OF A DTC SEE CHART 2: DIAGNOSTIC
TROUBLE CODES (DTC) (~)