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Perkins2206D柴油發(fā)動機CH12895引擎控制組件ECM
詳細描述
項目 零配件號碼 新件號 描述
1 CH12895 1 CH12895 引擎控制組件ECM
2 CH10297 4 CH10297 圖釘
3 CH10272 8 CH10272
4 CH10108 4 CH10108 間隔器
5 CH10279 8 CH10279 墊圈
6 CH11932 2 CH11932 托架
7 CH12655 1 CH12655 蓋
8 CH12370 4 CH12370 帽
項目 零配件號碼 新件號 描述
1 T401652 1 T401652 節(jié)溫器殼
4 CH12474 2 CH12474 栓塞
5 CH11621 2 CH11621 密封O型圈
6 CH10285 1 CH10285 栓塞
7 CH10161 1 CH10161 密封O型圈
8 CH12171 4 CH12171 螺拴
9 CH12175 4 CH12175 螺拴
10 CH10277 4 CH10277 墊圈
11 CH12167 1 CH12167 調(diào)整器
12 CH11620 1 CH11620 節(jié)溫器
13 CH12166 1 CH12166 密封墊 - 節(jié)溫器殼
14 CH12165 1 CH12165 密封墊 - 節(jié)溫器殼
15 CH10287 3 CH10287 栓塞
16 CH10146 3 CH10146 密封O型圈
17 CH12661 1 CH12661 密封O型圈
18 CH12168 1 CH12168 管
19 CH10201 1 CH10201 密封O型圈
20 CH10201 1 CH10201 密封O型圈
項目 零配件號碼 新件號 描述
1 CH12684 1 CH12684 缸體組合 - O 圈
項目 零配件號碼 新件號 描述
2 1 缸體
3 CH11752 5 CH11752 栓塞
4 CH12489 6 CH12489 缸套 - 壓八配合
5 CH12488 6 T400359 密封墊 -油
6 CH12630 7 CH12630 凸輪軸襯套
7 7 軸承蓋
8 CH12631 14 CH12631 螺拴
9 CH12632 14 CH12632 墊圈
項目 零配件號碼 新件號 描述
1 CH10032 3 CH10032 栓塞
2 CH11713 2 CH11713 合釘
3 CH11714 6 CH11714 合釘
4 T400363 3 T400363 栓塞
5 T409314 3 T409314 密封O型圈
項目 零配件號碼 新件號 描述
1 CH12287 6 CH12287 螺拴
項目 零配件號碼 新件號 描述
1 CH12481 1 CH12481 軸
4 CH12484 1 CH12484 搖臂座
5 CH12483 2 CH12483 軸環(huán)
6 T400226 1 T400226 搖臂
7 CH12511 1 CH12511 搖臂
8 CH12509 1 CH12509 螺帽
9 CH12512 1 CH12512 螺旋
10 CH10229 1 CH10229 密封O型圈
11 CH12702 1 CH12702 樞
12 CH12514 1 CH12514 搖臂
13 CH12513 2 CH12513 螺旋
14 CH11865 2 CH11865 螺帽
15 CH12278 12 CH12278 結(jié)軸塊
16 CH12795 12 CH12795 PUSHROD
17 CH12808 6 CH12808 PUSHROD
項目 零配件號碼 新件號 描述
1 CH12586 1 CH12586 軸
4 CH12590 1 CH12590 托架
5 CH11807 7 CH11807 螺拴
6 CH12587 12 CH12587 滾子
7 CH12585 6 CH12585 滾子
8 CH12589 5 CH12589 托架
9 CH12588 1 CH12588 托架
10 CH12591 1 CH12591 合釘
項目 零配件號碼 新件號 描述
1 CH12117 1 CH12117 油底殼
2 CH12118 1 CH12118 密封墊 -油底殼
3 CH11571 1 CH11571 排泄栓塞
4 CH11573 1 CH11573 密封O型圈
5 T400251 1 T400251 栓塞
6 T400544 1 T400544 密封O型圈
7 T400251 1 T400251 栓塞
8 T400544 1 T400544 密封O型圈
9 T401275 1 T401275 承接器
10 T406205 1 T406205 密封O型圈
11 2461 A503 1 2461 A503 關(guān)閉閥
12 CH12124 13 CH12124 螺拴
13 CH12119 13 CH12119 密封墊
14 CH10113 13 CH10113 墊圈
15 CH12657 1 CH12657 圖釘
16 CH12119 1 CH12119 密封墊
17 CH10113 1 CH10113 墊圈
18 T400250 1 T400250 管 - 油的吸入
19 CH10098 1 CH10098 密封O型圈
20 CH10041 2 CH10041 螺拴
21 T401636 2 T401636 墊圈
22 CH10099 2 CH10099 墊圈
23 CH12122 2 CH12122 螺拴
項目 零配件號碼 新件號 描述
1 CH12436 1 CH12436 凸輪軸
6 CH12435 1 CH12435 蓋
7 CH12437 1 CH12437 密封O型圈
8 CH11815 4 CH11815 螺拴
9 CH10277 4 CH10277 墊圈
10 CH12438 4 CH12438 螺拴
項目 零配件號碼 新件號 描述
2 1 凸輪軸
3 CH12520 1 CH12520 凸輪軸傳動機構(gòu)
4 CH12519 1 CH12519 推力墊圈
5 CH10005 1 CH10005 半圓鍵
項目 零配件號碼 新件號 描述
1 T401701 1 T401701 燃油濾清器
項目 零配件號碼 新件號 描述
1 T401729 1 T401729 承接器
2 T400248 1 T400248 密封O型圈
3 T401731 1 T401731 管
4 T401735 2 T401735 搖臂座
5 T401734 1 T401734 水管
6 T401730 1 T401730 承接器
7 T400248 1 T400248 密封O型圈
8 T401725 1 T401725 閥
9 T401736 4 T401736 螺拴
10 CH10303 4 CH10303 墊圈
11 T401724 1 T401724 密封墊
12 T401732 1 T401732 螺拴
13 CH11819 1 CH11819 墊圈
14 T401737 1 T401737 螺拴
15 CH11819 1 CH11819 墊圈
16 T401723 1 T401723 管集箱箱
20 T401726 1 T401726 連接器
21 T400248 1 T400248 密封O型圈
22 T401733 1 T401733 水管
23 T401735 2 T401735 搖臂座
24 T401728 1 T401728 管
25 T401727 1 T401727 承接器
26 T401291 1 T401291 密封O型圈
項目 零配件號碼 新件號 描述
1 T400172 1 T400172 機油冷卻器
2 T400162 1 T400162 端帽
3 T400173 1 T400173 密封O型圈
4 CH10291 1 CH10291 栓塞
5 CH12240 1 CH12240 密封O型圈
6 CH12474 1 CH12474 栓塞
7 CH11621 1 CH11621 密封O型圈
8 CH10395 1 CH10395 聯(lián)結(jié)器
9 CH12238 1 CH12238 密封O型圈
10 CH12238 1 CH12238 密封O型圈
11 CH11565 6 CH11565 螺拴
12 CH10277 6 CH10277 墊圈
13 T400175 1 T400175 端帽
14 T400173 1 T400173 密封O型圈
15 CH11375 1 CH11375 栓塞
16 CH10119 1 CH10119 密封O型圈
17 CH12447 4 CH12447 螺拴
18 CH10277 4 CH10277 墊圈
19 T400174 1 T400174 搖臂座
20 CH12662 1 CH12662 水管
21 T400174 1 T400174 搖臂座
22 CH12231 1 CH12231 密封O型圈
23 T401049 1 T401049 水肘管
24 CH10285 1 CH10285 栓塞
25 CH10161 1 CH10161 密封O型圈
26 CH10140 1 CH10140 螺拴
27 CH10277 1 CH10277 墊圈
28 CH12447 1 CH12447 螺拴
29 CH10277 1 CH10277 墊圈
項目 零配件號碼 新件號 描述
1 CH12455 1 CH12455 汽缸蓋組合
(1) CH12455 1 CH12455 汽缸蓋裝備 -EXCH
項目 零配件號碼 新件號 描述
1 CH12569 26 CH12569 汽缸蓋螺拴
2 CH12571 26 CH12571 墊圈
3 CH12570 8 CH12570 螺拴
4 CH12454 1 CH12454 密封墊 - 汽缸蓋
項目 零配件號碼 新件號 描述
1 KRP1688 1 KRP1688 溫度感應(yīng)傳感器
4 KRP1699 1 KRP1699 油壓感應(yīng)傳感器裝備
7 T401655 1 T401655 肘管
8 T409314 1 T409314 密封O型圈
9 KRP1687 1 KRP1687 溫度感應(yīng)傳感器
12 KRP1693 1 KRP1693 氣壓感應(yīng)傳感器裝備
15 CH12642 1 CH12642 承接器
16 CH11880 1 CH11880 密封O型圈
項目 零配件號碼 新件號 描述
2 CH12652 1 CH12652 氣壓感應(yīng)傳感器
3 CH11880 1 CH11880 密封O型圈
3 CH10133 1 CH10133 密封O型圈
項目 零配件號碼 新件號 描述
1 CH10054 13 CH10054 纜拉桿
2 T401576 2 T401576 接線夾
3 CH12286 2 CH12286 螺拴
4 CH10303 2 CH10303 墊圈
5 CH10420 1 CH10420 接線夾
6 CH11814 1 CH11814 公制的螺拴
7 CH10277 1 CH10277 墊圈
8 CH10072 1 CH10072 夾
9 CH12203 1 CH12203 螺拴
10 CH11819 1 CH11819 墊圈
11 CH10420 1 CH10420 接線夾
12 CH12203 1 CH12203 螺拴
13 CH11819 1 CH11819 墊圈
14 T401660 1 T401660 接線夾
15 CH12203 1 CH12203 螺拴
16 CH11819 1 CH11819 墊圈
17 T401662 1 T401662 接線夾
18 CH12203 1 CH12203 螺拴
19 CH11819 1 CH11819 墊圈
20 CH10420 1 CH10420 接線夾
21 CH12671 1 CH12671 圖釘
22 CH10277 1 CH10277 墊圈
23 T401660 1 T401660 接線夾
24 CH11299 1 CH11299 螺拴
25 CH11819 1 CH11819 墊圈
26 T401297 1 T401297 墊圈
27 T401661 1 T401661 接線夾
28 CH10922 1 CH10922 螺拴
29 CH10099 1 CH10099 墊圈
30 T410794 1 T410794 接線夾
31 CH11865 1 CH11865 螺帽
32 CH11819 1 CH11819 墊圈
項目 零配件號碼 新件號 描述
1 T401716 1 T401716 燃料過濾器
4 CH12612 2 CH12612 螺拴
5 CH11819 2 CH11819 墊圈
6 CH10836 1 CH10836 閥
7 T400188 1 T400188 密封O型圈
8 T400684 1 T400684 密封O型圈
9 CH10439 1 CH10439 汽酒共騰泵
10 CH10008 1 CH10008 密封墊
11 CH10246 1 CH10246 螺拴
12 CH10086 1 CH10086 墊圈
13 CH11565 1 CH11565 螺拴
14 T401636 1 T401636 墊圈
15 T408416 1 T408416 密封O型圈
16 T407241 1 T407241 連接器
17 CH11880 1 CH11880 密封O型圈
18 T409325 1 T409325 帽
19 T400857 1 T400857 密封O型圈
20 T400695 1 T400695 密封O型圈
21 T400694 1 T400694 栓塞
22 T401715 1 T401715 托架
23 T400188 1 T400188 密封O型圈
24 CH12017 1 CH12017 非回路閥
28 CH11819 2 CH11819 墊圈
29 ST43558 2 ST43558I 螺拴
30 CH10287 1 CH10287 栓塞
31 T406205 1 T406205 密封O型圈
32 CH10287 1 CH10287 栓塞
33 T406205 1 T406205 密封O型圈
項目 零配件號碼 新件號 描述
1 T401702 1 T401702 水管
2 T401708 1 T401708 承接器
3 CH11880 1 CH11880 密封O型圈
4 CH11880 1 CH11880 密封O型圈
5 CH11410 1 CH11410 栓塞
6 CH11880 1 CH11880 密封O型圈
7 CH11411 1 CH11411 灰塵盾
8 T401711 1 T401711 承接器
9 T406205 1 T406205 密封O型圈
10 CH10286 1 CH10286 栓塞
11 CH11880 1 CH11880 密封O型圈
12 T401717 1 T401717 管
13 T401704 1 T401704 承接器
14 T400646 1 T400646 承接器
15 CH11880 1 CH11880 密封O型圈
16 T401703 1 T401703 管夾
17 CH11819 1 CH11819 墊圈
18 CH11807 1 CH11807 螺拴
19 T401448 1 T401448 間隔器
20 T401714 1 T401714 水管
21 CH11595 1 CH11595 連接器
22 T406205 1 T406205 密封O型圈
23 CH10841 1 CH10841 連接
24 CH11880 1 CH11880 密封O型圈
25 T401448 1 T401448 間隔器
26 T400658 1 T400658 托架
27 T400659 1 T400659 托架
28 CH11819 1 CH11819 墊圈
29 CH11807 1 CH11807 螺拴
30 T400660 1 T400660 襯套
31 T401714 1 T401714 水管
32 CH10026 1 CH10026 連接
33 CH11880 1 CH11880 密封O型圈
34 CH10026 1 CH10026 連接
35 CH11880 1 CH11880 密封O型圈
36 T401713 1 T401713 肘管
37 CH10133 1 CH10133 密封O型圈
38 CH11865 1 CH11865 螺帽
39 CH11819 1 CH11819 墊圈
40 T400659 1 T400659 托架
41 T400660 1 T400660 襯套
42 T400658 1 T400658 托架 &, amp;, nbsp;
43 T401705 1 T401705 螺拴
44 CH10255 1 CH10255 墊圈
45 T400659 1 T400659 托架
46 T400660 1 T400660 襯套
47 T400658 1 T400658 托架
48 T401712 1 T401712 間隔器
49 T400658 1 T400658 托架
50 T400660 1 T400660 襯套
51 T400659 1 T400659 托架
52 T401707 1 T401707 間隔器
53 T401720 1 T401720 桿
54 T401706 1 T401706 間隔器
55 CH10054 2 CH10054 纜拉桿
項目 零配件號碼 新件號 描述
1 T401709 1 T401709 線束
2 KRP1699 1 KRP1699 油壓感應(yīng)傳感器裝備
5 T409314 1 T409314 密封O型圈
6 T400689 1 T400689 承接器
7 T406205 1 T406205 密封O型圈
8 KRP1687 1 KRP1687 溫度感應(yīng)傳感器
11 28170044 1 28170044 電力有關(guān)連接器
12 2900 A011 2 2900 A011 銷
13 CH10420 1 CH10420 接線夾
14 CH10054 1 CH10054 纜拉桿
15 T410794 1 T410794 接線夾
16 CH10054 1 CH10054 纜拉桿
17 T410794 1 T410794 接線夾
18 CH12203 1 CH12203 螺拴
19 CH11819 1 CH11819 墊圈
20 CH10054 1 CH10054 纜拉桿
項目 零配件號碼 新件號 描述
2 1 感應(yīng)傳感器
3 CH10132 1 CH10132 密封O型圈
項目 零配件號碼 新件號 描述
2 1 溫度感應(yīng)傳感器
3 T406205 1 T406205 密封O型圈
3 CH10230 1 CH10230 密封O型圈
項目 零配件號碼 新件號 描述
1 T401573 6 T401573 活塞裝備
6 T401572 6 T401572 活塞環(huán)裝備
項目 零配件號碼 新件號 描述
1 T401573 6 T401573 活塞裝備
6 T401572 6 T401572 活塞環(huán)裝備
項目 零配件號碼 新件號 描述
2 1 活塞
3 CH12332 1 CH12332 軸頭銷
4 CH12331 1 CH12331 CIRCLIP
5 CH12331 1 CH12331 CIRCLIP
項目 零配件號碼 新件號 描述
1 CH12635 6 CH12635 連桿組合
5 KRP3023 1 KRP3023 大頭軸承裝備
(5) KRP3023/051 1 KRP3023/051 大頭 BRG 裝備 -U/S
(5) KRP3023/076 1 KRP3023/076 大頭 BRG 裝備 -U/S
項目 零配件號碼 新件號 描述
2 1 連桿
3 1 連桿小的一端襯套
4 CH12499 2 CH12499 連桿螺拴
項目 零配件號碼 新件號 描述
1 T401692 1 T401692 燃油濾清器
4 CH11299 2 CH11299 螺拴
5 CH11865 2 CH11865 螺帽
6 T401694 2 T401694 螺拴
7 T401001 2 T401001 墊圈
8 T401700 1 T401700 板
9 T401696 1 T401696 承接器
10 T400544 1 T400544 密封O型圈
11 CH10822 1 CH10822 工具
12 T409314 1 T409314 密封O型圈
13 T401693 1 T401693 承接器
14 T400544 1 T400544 密封O型圈
15 2658 A101 1 2658 A101 帽
16 T401697 1 T401697 承接器
17 T400544 1 T400544 密封O型圈
18 4587260 1 4587260 濾油器
19 T401695 1 T401695 水管 -油
20 T401698 1 T401698 承接器
21 T400762 1 T400762 密封O型圈
22 T401695 1 T401695 水管 -油
23 T401699 1 T401699 承接器
24 T400762 1 T400762 密封O型圈
25 T401691 1 T401691 蓋
26 T401690 2 T401690 密封O型圈
27 T401689 1 T401689 承接器
項目 零配件號碼 新件號 描述
1 T400315 1 T400315 壓縮機
項目 零配件號碼 新件號 描述
1 T400318 1 T400318 啟動馬達
2 CH10310 1 CH10310 密封墊
3 T400724 3 T400724 墊圈
4 T400720 3 T400720 螺拴
項目 零配件號碼 新件號 描述
1 2488 A298 1 2488 A298 壓縮機
2 T401634 1 T401634 栓塞
3 T401635 4 T401635 螺拴
4 T401636 4 T401636 墊圈
項目 零配件號碼 新件號 描述
1 T400313 1 T400313 交流充電發(fā)電機
2 T401641 1 T401641 皮帶輪
3 T401642 4 T401642 螺拴
4 T407566 4 T407566 墊圈
項目 零配件號碼 新件號 描述
1 T401643 6 T401643 噴油器
(1) T401643R 6 T401643R 噴油器
7 CH12324 6 CH12324 噴油器搖臂座
8 CH12326 6 CH12326 螺拴
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customer connector and the 70 pin customer
connector to 2.25 ± 0.25 N·m (20 ± 2 lb in).
Expected Result:
The ECM connector is secure and the allen head
screws are properly torqued.
Results:
• OK – The ECM connectors and the customer
connector is properly connected. Proceed to Test
Step 8.
• Not OK – The allen head screws for the ECM
connector or the customer connector is damaged.
Repair: Repair the connector or replace the
connector, as required. Verify that the repair
eliminates the fault.
STOP.
Test Step 8. Perform the “Wiggle Test”
on the Electronic Service Tool
A. Select the “Wiggle Tes t” from the diagnostic tests
on the electronic serv ice tool.
B. Choose the appropriate group of parameters to
monitor.
C. Press the “Start” button. Wiggle the wiring harness
in order to reproduce intermittent faults.
If an intermittent fault exists, the status will be
highlighted and an audible beep will be heard.
Expected Result:
No intermittent faults were indicated during the
“Wiggle Test”.
Results:
harness and connectors appear to be OK. If you
were sent from another procedure, return to the
procedure and c ontinue testing. If this test has
resolved the fault, return the engine to service.
STOP.
indicated.
Repair: Repair the harness or the connector. Verify
that the repair eliminates the fault.
STOP.
i02568609
Electrical Power Supply Circuit
- Test
System Operation Description:
Use this procedure to troubleshoot any suspec ted
faults with the electrical power supply.
This procedure covers the following diagnostic codes:
• 0168-02 Electrical System Voltage erratic,
intermittent, or incorrect
This procedure tests whether proper voltage is being
supplied to the Electronic Control Module (ECM).
Unswitched battery voltage is supplied through the
customer connector to the ECM at P1-48, P1-52, and
P1-53. The negative battery is s upplied to the ECM
at P1-61, P1-63, and P1-65. The ECM receives the
input from the keyswitch at P1-70 when the keyswitch
is in the ON position or the START position. When
the ECM detects battery voltage at this input, the
ECM will power up. When battery voltage is removed
from this input, the ECM will power down.
The cause of an intermittent power supply to the ECM
can occur on either the positive side or the negative
side of the battery circuit. Both sides are routed from
the ECM to the battery. The three connections for
the unswitched +Battery s hould be routed through a
dedicated protective device (circuit breaker).
The engine ECM requires the keyswitch to be in the
ON position in order to maintain communications with
the electronic service tool.
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Schematic diagram for the electrical power supply
Connectors and the Wiring
A. Check all circuit breakers.
B. Check the battery.
C. Turn the keyswitch to the OFF position.
g01286846
Illustration 34
Left side view
(1) J1/P1 ECM connectors
(2) P61 customer connector
g01286858
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KENR6224
D. Thoroughly inspect connectors (1) and (2).
Inspect the connections for the battery and
the connections to the keyswitch. Refer to the
Troubleshooting Guide, “Electrical Connectors -
Inspect” for details.
Illustration 36
g01216338
Illustration 35
g01104383
J61 and P61 terminals that are associated with the electrical
power supply
(1) +Battery
(26) Keyswitch
(27) Shutdown
(31) +Battery
(32) +Battery
E. Perform a 45 N (10 lb) pull test on each of the
wires that are associated with the electrical power
supply.
F. Check the allen head screw on each ECM
P1 terminals that are assoc iated with the electrical power supply
(P1-44) Shutdown
(P1-48) +Battery
(P1-52) +Battery
(P1-53) +Battery
(P1-61) −Battery
(P1-63) −Battery
(P1-65) −Battery
(P1-70) Keys witch
connector for the proper torque. Refer to the
Troubleshooting Guide, “Electrical Connectors -
Inspect” for the correct torque values.
G. Check the harnes s and wiring for abrasions and
for pinc h points from the battery to the ECM. Also,
check the harness and wiring for abrasions and
for pinch points from the key switch to the ECM.
Expected Result:
All connectors, pins, and sockets are completely
coupled and/or inserted, and the harness and wiring
are free of corrosion, of abrasion and of pinch points.
Results:
• OK – The connectors and wiring are OK. Proceed
to Test Step 2.
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Troubleshooting Section
•
Not OK
wiring.
– There is a fault in the connectors or
B. Load test the batteries.
Expected Result:
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|
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replace the connectors or wiring. Ensure that all of
the seals are properly in place and ensure that the
connectors are completely coupled.
STOP.
Test Step 2. Check the Battery Voltage at
the ECM
A. Disconnect the J1/P1 ECM connector.
B. Turn the keyswitch to the ON position.
C. Measure the voltage between P1-52 (Unswitched
Positive Battery) and P1-63 (Negative Battery).
D. Measure the voltage between P1-48 (Unswitched
Positive Battery) and P1-61 (Negative Battery).
E. Measure the voltage between P1-53 (Unswitched
Positive Battery) and P1-65 (Negative Battery).
F. Measure the voltage between P1-70 (Keyswitch)
and P1-63 (Negative Battery).
Expected Result:
The meas ured voltage is between 22.0 VDC and 27.0
VDC with no suspected intermittent faults at this time.
Results:
• OK – The ECM is receiving the correct voltage.
Repair: If an intermittent condition is suspected,
refer to the Troubleshooting Guide, “Electrical
Connectors - Inspect”.
STOP.
Step 3.
•
Repair: Check the circuit protection for the
circuit and for the wiring. Trace the wiring for the
keyswitch from the ECM through the keyswitch
circuit to the batteries. Find the fault and repair the
fault.
Verify that the repairs eliminate the fault.
STOP.
Test Step 3. Check the Batteries
A. Measure the no-load battery voltage at the battery
posts.
The batteries pass the load test. The measured
voltage is the minimum specification for a 24V
system.
Results:
• OK – The batteries are OK.
Repair: Check the wiring between the batteries
and the ECM for shorts.
Check the connectors between the batteries and
the ECM for moisture and/or corrosion.
Repair the wiring and/or the connectors.
Verify that the repair eliminates the fault.
STOP.
• Not OK – The battery voltage is low or the battery
did not pass the load test.
Repair: Recharge or replace the faulty batteries.
Verify that the repair eliminates the fault.
STOP.
i02568670
Engine Pressure Sensor Open
or Short Circuit - Test
System Operation Description:
Use this procedure to troubleshoot any suspect faults
with the following sensors:
• Engine oil pressure sensor
• Inlet manifold pressure sensor
• Atmospheric pres sure sensor
This procedure covers the following diagnostic codes:
• 0100-03 Engine Oil Pressure Sensor voltage
above normal
• 0100-04 Engine Oil Pressure Sensor voltage below
normal
• 0273-03 Turbocharger Outlet Pressure Sensor
voltage above normal
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•
•
•
0273-04 Turbocharger Outlet Pres sure Sensor
voltage below normal
0274-03 Atmospheric Pressure Sensor voltage
above normal
0274-04 Atmospheric Pressure Sensor voltage
below normal
The troubleshooting procedures for the diagnostic
codes of each pressure sensor are identical. The
Engine Control Module (ECM) sends a 5 volt supply
to terminal 1 of each sensor. The sensor common
connection is connected to terminal 2 of each sensor.
The signal voltage from terminal 3 of each sensor is
sent to the appropriate terminal at the J2/P2 ECM
connector.
Pull-up Voltage
The ECM continuously outputs a pull-up voltage
on the circuit for the sensor signal wire. The ECM
uses this pull-up voltage in order to detect an open
in the signal circuit. When the ECM detects the
presence of a voltage that is above a threshold on the
signal circuit, the ECM will generate an open circuit
diagnostic code (03) for the sens or.
If the sensor is disconnected at the s ensor connector,
the presence of pull-up voltage at the sensor
connector indicates that the wires from the sensor
connector to the ECM are not open or shorted to
ground. If the sensor is disconnected at the sensor
connector, the absence of pull-up voltage at the
sensor connector indicates an open in the signal wire
or a short to ground. If the sensor is disconnected at
the sensor connec tor and the voltage at the sensor
connector is different from pull-up voltage, the signal
wire is shorted to another wire in the harness.
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Illustration 37
Schematic for the engine pressure sensors
g01284368
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KENR6224
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Sensor connector
(1) +5 VDC
(2) Common
(3) Signal
Connectors and Wiring
Electrical
g01287356
Illustration 38
P2 ECM connector
(P2-15) Signal from the inlet manifold pressure sensor
(P2-17) Sensor common
(P2-28) Signal from the oil pressure sensor
(P2-57) Atmospheric pressure sensor signal
(P2-72) +5 Volt sensor supply
g01287043
A. Turn the keyswitch to the OFF position.
B. Thoroughly inspect the J1/P1 ECM connector and
the J2/P2 ECM connector. Thoroughly inspect the
connectors for each analog sensor. Refer to the
Troubleshooting Guide, “Electrical Connectors -
Inspect” for details.
C. Perform a 45 N (10 lb) pull test on each of the
wires that are associated with the active diagnostic
code.
D. Check the allen head screw on each ECM
connector for the proper torque. Refer to the
Troubleshooting Guide, “Electrical Connectors -
Inspect” for the correct torque values.
E. Check the harness and wiring for abrasions and
for pinch points from each sensor back to the
ECM.
Expected Result:
All connectors, pins, and sockets are completely
coupled and/or inserted. The harness and wiring are
free of corrosion, of abrasion, and of pinch points .
Results:
• OK – The harnes s and wiring are OK. Proceed
to Test Step 2.
• Not OK – There is a fault in the connectors and/or
wiring.
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