Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1846

MEMO

DIAGNOSIS 7A2-1

SECTION 7A2

DIAGNOSIS

TABLE OF CONTENTS

PAGE

BASIC TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . ..7A2-6
CHECK TRANS INDICATOR & SELF DIAGNOSIS. . . . . . . . . . . . . . . ..7A2-7
DIAGNOSIS WITH TECH 2. . . . . . . . . . . . . . . . . . . . . . . . . . 7A2-9
TECH 2 OPERATING FLOW CHART (START UP) . . . . . . . . . . . . . . . ..7A2-10
TYPICAL SCAN DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7A2-13
MISCELLANEOUS TEST. . . . . . . . . . . . . . . . . . . . . . . . . . ...7A2-14
INTERMITTENT DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . 7A2-16
SNAPSHOT DISPLAY WITH TIS 2000. . . . . . . . . . . . . . . . . . . . . 7A2-17
CIRCUIT DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7A2-23
PART LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7A2-25
CONNECTOR LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7A2-29
DIAGNOSIS TROUBLE CODE TABLE . . . . . . . . . . . . . . . . . . . . ...7A2-31
FAIL-SAFE FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . ..7A2-33
DTC P0722 (FLASH CODE 11) VEHICLE SPEED SENSOR NO SIGNAL . . . . . ..7A2-34
DTC P0727 (FLASH CODE 13) ENGINE REVOLUTION SENSOR NO SIGNAL. . . 7A2-36
DTC P0717 (FLASH CODE 14) TURBINE SPEED SENSOR NO SIGNAL. . . . . ..7A2-38
DTC P0710 (FLASH CODE 15) ATF TEMPERATURE SENSOR FAILURE . . . . . 7A2-40
DTC P0560 (FLASH CODE 16) SYSTEM VOLTAGE FAILURE . . . . . . . . . . 7A2-42
DTC P0705 (FLASH CODE 17) INHIBITOR SWITCH FAILURE. . . . . . . . . . 7A2-43
DTC P1120 (FLASH CODE 22) THROTTLE SIGNAL FAILURE. . . . . . . . . . 7A2-46
DTC P1875 (FLASH CODE 25) GND RETURN CIRCUIT FAILURE . . . . . . . . .7A2-48
DTC P0753 (FLASH CODE 31) LOW & REVERSE BRAKE DUTY
SOLENOID FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7A2-49
DTC P0758 (FLASH CODE 32) 2-4 BRAKE DUTY SOLENOID FAILURE . . . . . ..7A2-52
DTC P0763 (FLASH CODE 33) HIGH CLUTCH DUTY SOLENOID FAILURE. . . . 7A2-55
DTC P0768 (FLASH CODE 34) LOW CLUTCH DUTY SOLENOID FAILURE . . . . 7A2-58

7A2-2 DIAGNOSIS

PAGE

DTC P0748 (FLASH CODE 35) LINE PRESSURE SOLENOID FAILURE. . . . . ...7A2-61
DTC P1860 (FLASH CODE 36) LOCK-UP DUTY SOLENOID FAILURE. . . . . . .7A2-63
DTC P1853 (FLASH CODE 26) LOW & REVERSE BRAKE PRESSURE
SWITCH FAILURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..7A2-65
DTC P1858 (FLASH CODE 27) 2-4 BRAKE PRESSURE SWITCH FAILURE . . . . 7A2-69
DTC P1863 (FLASH CODE 28) HIGH CLUTCH PRESSURE SWITCH FAILURE. . ..7A2-73
DTC P0731 (FLASH CODE 41) 1st GEAR RATIO ERROR . . . . . . . . . . . . 7A2-77
DTC P0732 (FLASH CODE 42) 2nd GEAR RATIO ERROR. . . . . . . . . . . ...7A2-77
DTC P0733 (FLASH CODE 43) 3rd GEAR RATIO ERROR. . . . . . . . . . . . 7A2-77
DTC P0734 (FLASH CODE 44) 4th GEAR RATIO ERROR. . . . . . . . . . . . 7A2-77
DTC P1750 (FLASH CODE 51) LOW & REVERSE BRAKE FAIL-SAFE
VALVE FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7A2-79
DTC P1755 (FLASH CODE 52) 2-4 BRAKE FAIL-SAFE VALVE FAILURE . . . . . 7A2-81
DTC P0602 Programming Error. . . . . . . . . . . . . . . . . . . . ... 7A2-83
SYMPTOM DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . .7A2-84
SYMPTOM DIAGNOSIS TABLE. . . . . . . . . . . . . . . . . . . . . . . ...7A2-85
No. A1: VEHICLE DOES NOT RUN IN D, 3, 2, L and RANGE . . . . . . . . . . ..7A2-94
No. A2: VEHICLE DOES NOT RUN IN R RANGE . . . . . . . . . . . . . . . . 7A2-95
No. A3: VEHICLE DOES NOT RUN IN D, 3, 2 and RANGE. . . . . . . . . . . ...7A2-96
No. B1: VEHICLE RUNS IN N RANGE . . . . . . . . . . . . . . . . . . . . ...7A2-97
No. B2: POOR ACCELERATION AT STARTING . . . . . . . . . . . . . . . . .7A2-98
No. B3: ENGINE RACE UP DURING STARTING (SLIP) . . . . . . . . . . . . . 7A2-101
No. B4: LARGE SHOCK WHEN SHIFT LEVER IS CHANGED TO N TO D
RANGE OR N TO R RANGE . . . . . . . . . . . . . . . . . . . . . . . . . 7A2-104
No. B5: ENGINE STALLS WHEN SELECTING FROM N RANGE TO R, D, 3, 2
OR L RANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...7A2-105
No. B6: ENGINE STARTER DOES NOT RUN IN P OR N RANGE . . . . . . . . ...7A2-107
No. B7: ENGINE STARTER RUNS EXCEPT IN P OR N RANGE . . . . . . . . . .7A2-107
No. B8: EXTENDED TIME LAG WHEN SHIFT LEVER IS CHANGED TO N TO D. . 7A2-107
No. B9: EXTENDED TIME LAG WHEN SHIFT LEVER IS CHANGED TO N TO R. . 7A2-107
No. B10: BRAKE IS APPLIED IN R RANGE. . . . . . . . . . . . . . . . . . ..7A2-108
No. B11: INSUFFICIENT STARTING OR SHAKING IN D RANGE . . . . . . . . ...7A2-108

DIAGNOSIS 7A2-3

PAGE

No. B12: NOISE OR VIBRATION IS GENERATED AT STARTING . . . . . . . . ..7A2-108
No. C1: ENGINE RACE UP (SLIP) WHEN GEAR IS SHIFTED UP TO 1st TO 2

nd

. . 7A2-109

No. C2: ENGINE RACE UP (SLIP) WHEN GEAR IS SHIFTED UP TO 2nd TO 3

rd

. ...7A2-109

No. C3: ENGINE RACE UP (SLIP) WHEN GEAR IS SHIFTED UP TO 3rd TO 4

th

. . 7A2-109

No. C4: ENGINE RACE UP (SLIP) WHEN GEAR IS SHIFT DOWN . . . . . . . . 7A2-109
OR KICK-DOWN TO 4th TO 3

rd

. . . . . . . . . . . . . . . . . . . . .7A2-109

No. C5: ENGINE RACE UP (SLIP) WHEN GEAR IS SHIFT DOWN OR KICK-DOWN
TO 4th TO 2

nd

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..7A2-109

No. C6: ENGINE RACE UP (SLIP) WHEN GEAR IS SHIFT DOWN OR KICK-DOWN
TO 3rd TO 2

nd

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7A2-109

No. C7: ENGINE RACE UP (SLIP) WHEN GEAR IS SHIFT DOWN TO 4th OR 3

rd

TO 1

st

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7A2-109

No. C8: ENGINE RACE UP (SLIP) OTHERS. . . . . . . . . . . . . . . . . . .7A2-109
No. C9: BARKING FEEL WHEN GEAR IS SHIFTED UP TO 1st TO 2

nd

. . . . . . .7A2-112

No. C10: BARKING FEEL WHEN GEAR IS SHIFTED UP TO 2nd TO 3

rd

. . . . . ..7A2-112

No. C11: BARKING FEEL WHEN GEAR IS SHIFTED UP TO 3rd TO 4

th

. . . . . ...7A2-112

No. C12: LARGE SHOCK WHEN GEAR IS SHIFTED TO 1st TO 2

ND

OR 2nd TO 1

st

..7A2-115

No. C13: LARGE SHOCK WHEN GEAR IS SHIFTED TO 2nd TO 3

rd

OR 3rd TO 2

nd

.7A2-115

No. C14: LARGE SHOCK WHEN GEAR IS SHIFTED TO 3rd TO 4th TO 3

rd

. . . . 7A2-115

No. C15: LARGE SHOCK WHEN KICK-DOWN. . . . . . . . . . . . . . . . . 7A2-115
No. C16: LARGE SHOCK WHEN NO ACCELERATION. . . . . . . . . . . . . .7A2-115
No. C17: LARGE SHOCK WHEN GEAR IS SHIFTED DOWN TO 2nd TO
1st IN L RANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..7A2-115
No. C18: LARGE SHOCK (OTHER) . . . . . . . . . . . . . . . . . . . . . . 7A2-115
No. C19: LARGE SHOCK WHEN VEHICLE SPEED IS DOWNED BY NO
ACCELERATOR PANEL OR VEHICLE IS STOPPED. . . . . . . . . . . . . . 7A2-115
No. C20: LARGE LOCK-UP SHOCK. . . . . . . . . . . . . . . . . . . . . ...7A2-115
No. C21: SHIFT DOWN OR ENGINE OVER-RUN WHEN THE ACCELERATION
PANE IS STEPPED ON IN 4th GEAR . . . . . . . . . . . . . . . . . . . . . 7A2-115
NO. D1: FAULTY GEAR SHIFTING (DIFFERENT FROM SHIFT PATTERN). . . ... 7A2-116
NO. D2: GEAR IS SHIFTED FREQUENTLY . . . . . . . . . . . . . . . . . 7A2-121