ignition ISUZU TROOPER 1995 Workshop Manual

7A..J52 AUTOMATIC TRANSMISSION (4l30-E)
TECH1 CONNECTION
1. The Electronic Diagnosis Equipment is
composed of:
(1) TECH1 (J-38770-1)
hand-held scan tool
(Fig. 7 A-9).
(2)
TECH1 self-test adapter.
(3) Manufacturer's operating instructions.
Fig. 7A-9
2. Battery Cable Adapter
(1) This harness (J-38770-4) allows you to
power the TECH1 from vehicle battery.
(2) Remark:
lsuzu vehicles do not have power
to the cigarette lighter during cranking.
3. Transmission Cartridge
The cartridge
(TK025008-1) must be inserted
into the TECH1 for the 4L30-E transmission
diagnosis (Fig. 7 A-9a).
Fig. 7A-9a
4. TECH 1 Adapter
The adapter
(TA-02279-B) connects the single
TECH1 vehicle connector to single common
diagnostic connector for the 4L30-E Trans­
mission
Control Module (TCM) and the Engine
Control Module (ECM) called DATA LINK
CONNECTOR (C-9)
(white) (Fig. 7A-9b).
5. Connecting the TECH1 ~
(1) Always observe the instructions in the
TECH1 and Transmission Cartridge Oper-
ator's
Manual.
(2) Make sure the vehicle ignition is off.
(3) Install the adapter cable between the
TECH1 vehicle connector and the TCM/
ECM
DATA LINK CONNECTOR (C-9).
(4) Connect the battery cable adapter to the
vehicle battery and plug the TECH1 into its
"cigarette lighter" receptacle.
Fig. 7A-9b
6. DVOM
When instructed to use a voltmeter or ohm­
meter within a troubleshooting procedure, use
only a high-impedance DVOM (Digital Volt
Ohm
Meter) such as J-39200 or equivalent.

TECH1 OPERATING FLOW CHART
TECH1 START
IGNITION SWITCH ON
ISUZU 90-94
TRANSMISSION/ASS (YES)
(YES)
'
DISPLAY CAPTURED
OAT A FROM LAST (YES) SNAPSHOT?
(YES/NO)
(NO)
'
ISUZU 90-94
TRANSMISSION/ASS SELECT MODEL YEAR: 199?
(4)
'
SELECT MODEL: NHR, UT
MODEL YEAR: 1994 (YES/NO)
(NO)
'
SELECT MODEL: UBS(G), UC, UX
MODEL YEAR: 1994 (YES/NO)
(YES) t
STOP ENGINE TURN ON IGNITION (YES)
(YES)
'
SELECT ELECTRONIC DRIVE
TRAIN SYSTEM? (YES/NO)
(YES)
' SELECT BY YES i ,J.. *4L30E (DE)
(YES)
' WAITING FOR DATA ON 4L30E (DE)
'
COMPARE ISUZU
PART-NO
XXXXXXXX WITH CHART 3 (YES/NO) See CHART 3J)f"'"'"
page 2A +~.
__, -
AUTOMATIC TRANSMISSION (4L30-E) 7 A-53
MASTER CARTRIDGE
IS MISSING OR MALFUNCTIONING
SNAPSHOT MODE
TECH1 SEARCH
FORTC?
(YES/NO)
(NO)
'
BATIERY VOLTAGE 12.5 v BAROMETER SENSOR
0.45 BARO
(YES)
' NO TROUBLE CODES
SELECT MODE FO: OAT A LIST F1: NOT USED F2: TROUBLE CODE
rt ,J..)
SELECT MODE F3: SNAPSHOT F4: CLEAR CODES F5: ACTUATOR TEST
(i ,J..) ,
SELECT MODE F6: NOT USED F7: NOT USED F8: ECU CONTROL
(YES) ...
Trouble Code which occured
first is displayed.

AUTOMATIC TRANSMISSION (4L30-E) 7 A-63
F5: ACTUATOR TEST
The purpose
of F5: ACTUATOR TEST mode is to check for correct operation of electronic system actuators.
By means of the TECH 1 you can command the actuators ON and OFF. Then you can check the actuators for
correct operation.
Select the actuator by pushing the "i" or".!." key. (The* mark moves.)
For some actuator tests the TECH 1
can automatically determine the correct function of the actuators.
W CAUTION
Always put the parking brake on and block the wheels when using this test mode.
The engine
should be OFF and the ignition is ON. Refer to page 7A-73.
TEST ABORTED! ENGINE MUST NOT BE RUNNING
If engine running
SELECT MODE FO: DATA LIST
F1:NOT USED F2:TROUBLE CODE
(T,.J..)
SELECT MODE
F3:SNAPSHOT F4:CLEAR CODES
F5:ACTUATOR TEST
(F5)
SELECT ACTUATOR *SOLEN. 1-2/3-4 SOLENOID 2-3
SHIFT SOLENOID TCC SOLENOID TCC HIGH CD)
ATF LAMP POWER LAMP WINTER LAMP
CHK. TRN. LAMP ABS OFF LAMP
(i,.!.+ENTER)
SOLENOID 1-2/3-4
*1 i: ON .j,: OFF
CYESJ
(YES)
SOLENOID 1-2/3-4 * INACTIVE SOLENOID 2-3 INACTIVE ON/OFF
* 1 (i,.!.)
*:Flashing
*1: The
"i" key is ON and the".!." key is OFF.
(EXIT)
SELECT ACTUATOR *SOLEN. 1-2/3-4 SOLENOID 2-3 SHIFT SOLENOID

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.

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) 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) (~)

7 A-74 AUTOMATIC TRANSMISSION (4l30-E)
DIAGNOSTIC TROUBLE CODE (DTC) 11
OUTPUT SPEED FAILURE
This DTC flashes the CHECK TRANS indicator and
sets the
BACKUP MODE.
Circuit Description:
The transmission output speed sensor provides
information on vehicle speed to the Transmission
Control Module (TCM). The speed sensor circuit
consists
of a magnetic induction type sensor. The
sensor is
mounted above a target wheel pressed on
the
output shaft in the transmission extension. As
the
output shaft turns, the target wheel teeth induce
a variable voltage in the magnetic pickup. This
alternating current
(AC) signal is provided to the
TCM. The voltage increases with the speed of the
wheel
but this is not used to define the speed of the
vehicle. As the vehicle
moves faster, the signal
alternates faster between positive and negative
voltages. The
Output speed information is
proportional to the frequency of the signal.
TRANSMISSION SPEED SENSOR SHIELDS
Diagnostic Aids:
• This diagnostic is not an electrical test done by
the TCM but a test between different information
("logic test").
• Detection conditions:
CD Output Speed < OR = 0 KPH (0 MPH).
® Engine Speed > 3000 RPM.
@ No Malfunction: Engine Speed DTC 13. Mode
Switch DTC54.
@ Selector lever not in Park, Reverse, or Neutral.
@ The conditions need to be present for at least
5 seconds.
• Action after the detection time:
CD CHECK TRANS Indicator is turned ON.
® TCM in BACKUP MODE
•
Recovery conditions :To recover do an IGNITION
CYCLE.
- - -,.,.. C-90 "" - -~ ~ ""\' - -:-' M-15 r - - - - - - -TRANSMISSION I I WHT I , I , H<~o I , I , t , I SPEED SENSOR I +I > I I I I 6 I I I I 2 I (EXTENSION) I A12 I I I HOUSING
I II 111
11111111 ©I
', VEHICLE ', II I
I I I I I I I I I I !I ' ,~, 1
:
SPEED . I I I I I I I I I II "-.
I INPUT I I I I I I I I I I
I I I
ORN I I I I I I I I
I
-1 ~812 BLK l-- -~b - -~ ,> - - - - - - -I
I ll B11 s
I GROUND I C-91 BLK/ORN H-9_11
I I I C1 BLK/BLU : I
J __ -_I D1
TRANSMISSION
CONTROL MODULE
(TCM)
•