Peterbilt C10, C12, 3176B, 3406E Schematic

CAT C10/C12, 3176B, 3406E Engine Schematic

SK24807

D

01

A508 508

PTO

			ON/OFF
			SWITCH
			(SEE NOTE 5)
	SPS IDLE TIMER		TO A239
		BLK
			SPARE CIRCUIT
	YEL	RED
(SEE NOTE 6)
IGN
BAT	23	X	A12
12
IGNITION		CAT COLD	PARKING BRAKE SW
		DASH SHUTDOWN	(NC)
SWITCH
		SWITCH	(OPENS AT 2-6 PSI)
	23	X
		MARK IDLE TIMER

CAT ECM	ENGINE HARNESS
CONNECTOR
(40-PIN)

1418

2569

3552

4576

5577

6455

7 417

8A508

9551

10579

11581

12239

13225

14464

15463

16578

17580

18197

19224

20461

21-

22419

23568

24465

25462

26660

27468

28522

29457

30-

31-

32-

33	661
34	-

35582

36567

37458

38-

39662

40466

417	418	661	662	660	568	457	567	569	6	5	4 4
									0	7	5	7
									6	7	6 5
A B T		C B A			A B C D						A B T
A B S					A B C D						A B S
					COOLANT
					LEVEL
					SENSOR
J1587		J1939
ATA		DATA
DATA		LINK AND							GROUND TO
LINK AND		CAP							CYLINDER
CAP									HEAD STUD

CLUTCH SWITCH

(NO)

(SHOWN WITH AUTOSHIFT CLUTCH ENGAGED)

J1939

(OPTION)

NOTES:

1)SCHEMATIC FOR CATERPILLAR 3406E/3176 ENGINES IN CONVENTIONAL MODELS.

2)ALL PRESSURE SWITCHES SHOWN NOT PRESSURIZED.

3)ALL RELAYS SHOWN NOT ENERGIZED.

4)CLUTCH SWITCH SHOWN WITH CLUTCH ENGAGED (POWER TO THE DRIVE WHEELS.)

5)CONNECT PTO TOGGLE SWITCH IN SERIES WITH THE PARKING BRAKE SWITCH ONLY WHEN SEPARATE SWITCH ON DASH OPTION TO ENGAGE PTO IS REQUIRED.

6)BRAKESAVER AND IDLE TIMER SHUTDOWN OPTIONS CANNOT

BE USED TOGETHER.

										ENGINE POWER RELAY				ECM FUSE
													453		455
										700	453			15 AMP
		A508	457
					KEY		23	A23		A23	239
													DIAGNOSTICS FUSE
		PARKING BRAKE				SHUTDOWN CONNECTION				BRAKESAVER/				453	454
		SWITCH
		(NC)								SHUTDOWN RELAY				10 AMP
		(OPENS AT 2-6 PSI)								(SEE NOTE 6)
						BRAKESAVER FUSE				A12
											12
					23		226			C554
											554
							10 AMP
		A464	457							466	557
		SERVICE BRAKE								A466
				FUSE/RELAY
		(NC)
		SWITCH		HARNESS
		(OPENS AT 2-6 PSI)								ENGINE FAN RELAY			FAN FUSE
										226	A220		A220	220
													10 AMP
										522	239
		A464	464
		BRAKESAVER
		APPLICATION SWITCH
		(NC)
		(OPENS AT 2-6 PSI)
CONST PWR							A466	A12	12	A508 466 464 457 455 454 700	557 554 522	-	-		220	226	239
MAIN CAB					CONST PWR			B A		12 11 10 9 8 7 6 5 4 3 2 1					C B A
HARN	19	19
			19	19	ROOF HARN		A466	A12		A508 466 464 457 455 454 700	557 554 522				220	226	239
									12
		A466	239	CHASSIS GND								-	-
		SHUTDOWN RELAY
FIREWALL													CAB
CONNECTOR													HARNESS
418	A	418
417	B	417
-	C	-
576	D	576
-	E	-
455	F	455
-	G	-
A508	H	A508
-	J	-
579	K	579
581	L	581
-	M	-
225	N	225
464	P	464
463	Q	463
578	R	578
580	S	580
457	T	457
224	U	224
461	V	461
419	W	419
552	X	552
551	Y	551
-	Z	-
462	a	462
466	b	466
468	c	468
522	d	522

-e -

582	f	582
458	g	458

197	239		582	457	458
A B T			A B C			J11
A B S
			A B C			P11
				RD	WH BK
ROAD			POWER	SIGNAL	RETURN
SPEED		THROTTLE	(PWM)
SENSOR

POSITION

SENSOR

417	418	551	552	417	418	699	239
A B T		A B T		A B C D E F
A B S		A B S		DIAGNOSTIC
				CONNECTOR
				(AND CAP)
J1587		J1922
ATA		ATA
DATA		DATA
LINK AND		LINK AND
CAP		CAP

5 7 6

5

A M P

2 9 8

	B		7				6
			0				9
R	A		0		F		9	D
	T				P U			I
E T					O S		P	A
C		2				1	O
O E					E			G
R R		0			W /	0	W N
D Y		A			E R	A	E	O
E E		M			R E	M	R S
	V	P			L	P		T
R E					A			I
	N				Y			C
	T		2				2
			9				9
			8				8

CONNECT AT MAIN

CAB CIRCUIT

BREAKER

226

242

239

CONNECT TO SPARE POWER CONNECTION #3

USE 20 AMP FUSE

C0NNECT TO SPEEDO HARNESS SPARE

CKT FUNCTION

12 CAT ELEC SYSTEM SHUTDOWN

A12 CAT ELEC SYSTEM SHUTDOWN

23 12V POWER (KEY ON)

197 VEHICLE SPEED IN (+)

220 ENGINE FAN

224ENGINE BRAKE (FRONT)

225ENGINE BRAKE (REAR)

226SPARE 12V (KEY ON, FUSED)

239 (-) GROUND

242 DASH POWER (KEY ON, FUSED)

253 DASH ILLUMINATION

298 FUSED UNSWITCHED POWER

304 MAIN ACCESSORY POWER

354 CRUISE CONTROL "ON" LIGHT

417DATA LINK (+)

418DATA LINK (-)

419CHECK ENGINE LIGHT

438 WARNING LIGHT

453 ENGINE POWER

CKT FUNCTION

454DIAGNOSTICS POWER

455ECM POWER

457GROUND-SENSORS

458THROTTLE SENSOR OUTPUT

461CRUISE - ON

462CRUISE - SET

463CRUISE - RESUME

464SERVICE BRAKE SWITCH

465CLUTCH SWITCH

466ENGINE BRAKE ENABLE

468 WARNING BEEPER

508 PTO ON/OFF SWITCH

A508 PTO VALIDATION SIGNAL

522 ENGINE FAN DISABLE

551J1922 DATA LINK (+)

552J1922 DATA LINK (-)

A554 BRAKESAVER POWER

B554 BRAKESAVER POWER

CKT FUNCTION

C554 BRAKESAVER POWER

554 BRAKESAVER POWER

557 BRAKESAVER ON/OFF

567+5V LOW COOLANT SENSOR

568COOLANT LEVEL LOW

569COOLANT LEVEL NORMAL

576BATTERY EVENT RECORDER

577ECM GROUND STUD

578SPEEDOMETER (+)

579SPEEDOMETER (-)

580TACHOMETER (+)

581TACHOMETER (-)

582+8V THROTTLE PEDAL

660J1939 DATA LINK (SHIELD)

661J1939 DATA LINK (+)

662J1939 DATA LINK (-)

699DIAGNOSTIC POWER

700FUSE/RELAY POWER

JAKE BRAKE			JAKE BRAKE
ON/OFF
SWITCH			RANGE SWITCH
OFF	ABS		LOW
ON	CONNECTOR		MED
			HIGH
457	554	A554
			224
			225
		BRAKESAVER
		AUTO/MAN
		SWITCH
			OFF
			ON
	554		B554
	557		460
			B554
	239
			BRAKESAVER
CHASSIS GND			460 AUTO/MANUAL
			SOLENOID
(SHUTDOWN
OPTION)			CYLINDER HEAD
			GROUND STUD

	+		438		CRUISE SWITCH ILLUMINATION
454		-
			468				253		239
	WARNING
	BEEPER
			OFF
			ON					SET
	354			242				NONE
								RES	462
	461			457	457
									463
		CRUISE					CRUISE
		ON/OFF					SWITCH
		SWITCH					SET/RESUME
						A508			220
			438	419			354	0
								2
								2
									TO ENGINE
						A508			HARNESS
			438	419			354	0
								2
								2
				9		A508	354	220	8
				4					4
				1					3
				WARNING LIGHT BAR
				CONNECTORS
				(MAIN CAB HARNESS)
					SERVICE ONLY
					E.C.N. NO.			9801586
					DATE		12-21-98
					BY	J.M.WATSON			REM

SK24807.FM