IK1200288 ­ International Engine Won't Crank

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Countries:

AUSTRALIA, BRAZIL, CANADA, UNITED
STATES, MEXICO, PUERTO RICO, SOUTH
AFRICA

Document
ID:

IK1200288

Availability:

ISIS, FleetISIS

Revision:

8

Major System: ENGINES
Current
English
Language:

Created:
Last
Modified:

7/9/2008

Other
Languages:

Français, Español,

Author:

Viewed:

19797

2/11/2014
Ryan
Hendrickson

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Title : International Engine Won't Crank
Applies To : All International engines

DESCRIPTION
International engines have a Crank Inhibit circuit. The purpose of this circuit is to ensure that the engine cannot be started while the transmission is in gear.

SYMPTOMS
• No crank no start
• There will probably not be any DTC's

TROUBLESHOOTING
NOTE:

Do not replace the ESC. The ESC has nothing to do with the engine starting and running. A truck will start and run with the
ESC completely removed.

For MaxxForce Engines, click here
Here are some quick checks to determine causes of a no-crank condition.
1. Place transmission in neutral and set parking brake.
2. For test purposes ground pin 85 on the start relay.
3. Turn the key switch to the start position, if engine does not crank check wiring from key switch and all wiring from starter to start relay.
4. If engine cranks, install the breakout box on the X3 connector (6007 connector for CEC).
5.

With a test lead ground X3 pin 23 (pin 46 for CEC modules) and retest for engine crank. If the engine cranks, but does not start, you need to
check the powers and grounds to the ECM. It's probably not powering up.

6.

If the engine does not crank wiring must be repaired between X3 pin 23 (pin 46 for CEC modules) on the engine ECM to pin 85 at the crank
relay. Dont forget the thermal over crank protection circuit (if equipped).

7. If engine cranks, remove test lead from X3 pin 23 (pin 46 for CEC) and apply battery voltage to X3 pin 8 (pin 26 for CEC).
8.

If engine cranks, problem is due to loss of neutral signal or clutch switch to X3 pin 8 (pin 26 for CEC), refer to S08285, S082852, S082852A,
S082853, and S082854 for further troubleshooting.

9. If engine does not crank, engine ECM could be defective (verify for proper engine programming by contacting Tech Service Vehicle programming
at 1-800-336-4500).

NOTE:

For 3 Box Engines, see bottom of article.

CIRCUIT DIAGRAMS
Engine Crank Inhibit DLCII

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IK1200288 ­ International Engine Won't Crank

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Engine Crank Inhibit DLC

3 Box Engines

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IK1200288 ­ International Engine Won't Crank

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ECI Relay Connector Checks (Connector 385) Relay removed, ignition key On, Transmission in Netutral
Test Points
1 to GND
1 to 2
1 to 4
3 to 2

Specification

Comments
Open F4 fuse or open 97AU circuit, defective neutral position switch, or not
plugged together with manual transmission.
12 ± 1.5V
Open Ground 97GQ
12 ± 1.5V
Open 17A or 17D. Defective start relay proceed to testing starter relay.
(Turn ignition key to start or push start button with ignition key On)
12 ± 1.5V
Open circuit 17, defective key or start switch.
12 ± 1.5V

(Depress Clutch Pedal if equipped with Manual Xmsn or Place Auto Xmsn in Neutral)
1 to 5

12 ± 1.5V

Open 97DE circuit or ECM control open. Proceed to testing at ECM.

With transmission in Neutral and Clutch Depressed.
To jump ECI relay, connect a jumper wire between terminal 3 and 4. Turn ignition key to start or push starter button.
ECM (Connector 379) Checks with Breakout Box installed, key On, Xmsn in Neutral, Clutch Pedal depressed
Test Points
57 to 60

Specification
12 ± 1.5V

Comments
Open power or ground to ECM, refer to "ECM PWR"
Open F4 fuse, 97AU or 97L. Defective neutral position switch, clutch switch or
10 to 60
12 ± 1.5V
jumpers missing.
(Depress Clutch Pedal if equipped with Manual Xmsn or Place Auto Xmsn in Neutral)
57 to 35
12 ± 1.5V
Incorrect signal at terminal 10. Incorrect VPM programming, or defective ECM.
(The following step should only be performed on vehicles with Manual Transmission)
Depress clutch pedal
10 to 60
12 volts
Improperly mounted or defective clutch switch.
With transmission in Neutral and Clutch Depressed.
To jump ECM relay, connect a jumper wire between terminal 60 and 35 of break out box. Turn ignition key to start or
push starter button.
Starter Relay Connector Checks (Connector 387) Key On, Transmission in Neutral and Clutch Depressed
Test Points
E to GND
E to D
E to A

Specification
Comments
12 ± 1.5V
Open fusible link 17L or circuit 17B.
12 ± 1.5V
Thermal Overcrank open or open ground circuit 17D or 17G or 11GJ
12 ± 1.5V
Open 17C or defective starter solenoid.
(Turn ignition key to start button with ignition key On)
F to D
12 ± 1.5V
Open 17A circuit
With transmission in Neutral and Clutch Depressed.
To jump starter relay, connect a jumper wire between terminal A and E.

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U00MSE1

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IK1200288 ­ International Engine Won't Crank

You received the following feedback From: U00MSE1 - Mark Ehlers Email Address: SMTP:{mark.ehlers@navistar.com}mark.ehlers@navistar.com Job
Classification: AD001, Administration Dealer: Field Personnel Feedback: please improve the "applies to" for this article

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2/11/2014
8:23:18 AM

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