III. Check that there is no damage or breakage to the
3. Troubleshooting steps without User Code display and
If there is no display of User Code nor the failure history in the monitor panel, it is possible that a failure that the monitor panel cannot diagnose by itself may have occurred in any of the electrical, hydraulic or mechanical system. In such a case, re-examine the phenomenon, find out the most similar phenomenon from among "Failure like Phenomena and Troubleshooting No." and carry out troubleshooting related to the phenomenon in question.
Mode Content
Code display Troubleshooting when Service Code (electrical system) and Failure Code (mechanical system) are displayed.
E mode Troubleshooting of electrical system
H mode Troubleshooting of hydraulic and mechanical systems
(Engine) Troubleshooting of engine assembly (refer to the shop manual for engine in 102 series)
TESTING AND ADJUSTING Failure-looking phenomenon and troubleshooting no.
Failure-looking phenomenon and troubleshooting no.
No. Failure-looking phenomenon
Troubleshooting Code
display E mode H mode (Engine) Action to be taken concerning Service Code, User Code and Failure Code
1 Display User Code in monitor panel According
to displayed
code 2 Display Service Code in electrical system after checking failure history
3 Display Failure Code in mechanical system after checking failure history Engine-related failure
4 Engine does not start up easily. (It always takes some time to start up the
engine) S-1
5
Engine does not start
Engine does not rotate E-1 S-2 (1)
6 Engine rotates, but there is no exhaust gas S-2 (2)
7 There is exhaust gas, but engine does not start S-2 (3)
8 Engine pickup is poor. (Engine does not follow acceleration) S-3
9 Engine stops while in operation H-2 S-4
10 Engine rotation is irregular. (There is hunting) S-5
11 Engine is short of output, or lacks power H-1 S-6
12 Color of exhaust gas is too dark. (Incomplete combustion) S-7
13 Excessive engine oil consumption, or color of exhaust gas is blue S-8
14 Premature engine oil contamination S-9
15 Excessive fuel consumption S-10
16 Engine cooling water is mixed with engine oil, spurts out or decreases S-11
17 Engine oil amount increases. (Water or fuel gets in) S-13
18 Abnormal noises are heard S-15
19 Excessive vibrations are caused S-16
20 Auto-decelerator does not work E-2 H-5
21 Engine auto warming-up device does not work E-3
22 Engine preheater does not work E-7
Failure related to work equipment, swing and travel
23 Speeds of all work equipment, travel and swing are slow, or they lack power H-1 S-6
24 Engine rotation drops sharply or stalls H-2 S-4
25 All work equipment, travel and swing do not move E-8 H-3
26 There are abnormal noises from around hydraulic pump H-4
27 Fine control mode function works poorly, or shows slow response H-6
Failure-looking phenomenon and troubleshooting no. TESTING AND ADJUSTING
No. Failure-looking phenomenon
Troubleshooting Code
display
User
code H mode (Engine) Work equipment-related failure
29 Boom moves slowly or lacks power E-21, 22 H-7
30 Arm moves slowly or lacks power E-23, 24 H-8
31 Bucket moves slowly or lacks power E-25, 26 H-9
32 Boom, arm or bucket does not move H-10
33 Natural drift of work equipment is too fast H-11
34 Work equipment time lag is too big H-12
35 Other work equipment moves, when specific work equipment is relieved H-13
36 One-touch power max. switch does not work E-9, 21–26 H-14
Compound operation-related failure
37 In compound operation, work equipment with larger load moves slowly H-15
38 In swing + boom RAISE operation, boom moves slowly H-16
39 In swing + travel operation, travel speed drops sharply H-17
Travel-related failure
40 Machine tends to swerve while in travel 41 Travel speed is slow
42 Machine is difficult to steer, or lacks power
43 Travel speed cannot be shifted or is slow or fast H18
Swing-related failure
44 Machine does not swing E-27 H-23
45 Swing acceleration is poor, or swing speed is slow H-24
46 Upper structure overruns excessively, when stopping swing H-25
47 There is a big shock caused when stopping swing H-26
48 There is abnormal noise generated when stopping swing H-27
49 There is natural drift while in swing H-28
Monitor panel-related failure (Operator's Menu: ordinary display)
50 No display appears in monitor panel at all E-10
51 Part of display is missing in monitor panel E-11
52 Descriptions on monitor panel do not apply to the machine model E-12 53 In startup inspection, radiator water level caution symbol is displayed on the
monitor panel, when the engine is running B@BCZK
54 In startup inspection, engine oil level caution symbol is displayed, when the
engine is stopped (with the starting key in the ON position) B@BAZK
TESTING AND ADJUSTING Failure-looking phenomenon and troubleshooting no.
No. Failure-looking phenomenon
Troubleshooting Code
display
User
code H mode (Engine) 55 In startup inspection, maintenance hour monitor lamp lights up red Refer to Operation and Maintenance Manual 56 While engine is running, battery charging caution symbol is displayed on
the monitor panel. AB00KE
57 While engine is running, fuel level monitor lamp lights up red E-13 58 While engine is running, air cleaner clogging charging caution symbol is
displayed on the monitor panel. AA10NX
59 While engine is running, engine cooling water temperature gauge is
diplayed in red range B@BCNS
60 While engine is running, hydraulic oil temperature gauge is diplayed in red
range B@HANS
61 Engine cooling water temperature gauge does not display correctly E-14 62 Hydraulic oil temperature gauge does not display correctly E-15
63 Fuel gauge does not display correctly E-16
64 Swing lock monitor does not display correctly E-17
65 When operating monitor switch, no display appears E-18
66 Windshield wiper does not work E-19
67 Warning buzzer cannot be stopped E-20
Monitor panel-related failure (Service Menu: Special Function Display)
68 In monitoring function, "Boom RAISE" cannot be displayed correctly E-21 69 In monitoring function, "Boom LOWER" cannot be displayed correctly E-22 70 In monitoring function, "Arm DIGGING" cannot be displayed correctly E-23 71 In monitoring function, "Arm DUMPING" cannot be displayed correctly E-24 72 In monitoring function, "Bucket DIGGING" cannot be displayed correctly E-25 73 In monitoring function, "Bucket DUMPING" cannot be displayed correctly E-26 74 In monitoring function, "Swing" cannot be displayed correctly E-27 75 In monitoring function, "Travel" cannot be displayed correctly E-28 76 In monitoring function, "2 Piece Boom" cannot be displayed correctly E-29 Other failure
77 Air conditioner does not work E-301
78 Travel alarm does not sound E-31
Failure-looking phenomenon and troubleshooting no. TESTING AND ADJUSTING
How to read electric wire code
• In this section, electric wire codes specific to PW180-7E0 are explained.
In the electric circuit diagram, the material, thickness, and color of each electric wire are indicated by symbols. The electric wire code is helpful in understanding the electric cir- cuit diagram.