18-029-12

NUMBER:
GROUP:
DATE:
18-029-12
Vehicle Performance
October 11, 2012
This bulletin is supplied as technical information only and is not an authorization for repair. No part of this publication may be reproduced, stored in a retrieval system,
or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without written permission of Chrysler Group LLC.
HELP USING THE wiTECH DIAGNOSTIC APPLICATION FOR FLASHING AN ECU IS
AVAILABLE BY SELECTING "HELP" THEN "HELP CONTENTS" AT THE TOP OF
THE wiTECH DIAGNOSTIC APPLICATION WINDOW.
THE wiTECH SOFTWARE LEVEL MUST BE AT RELEASE 13.01 OR HIGHER TO
PERFORM THIS PROCEDURE.
SUBJECT:
Rattle and/or Clatter Sound on Cold Start-up
OVERVIEW:
This bulletin involves installing revised heater hoses, routing the purge solenoid wire
harness, and installing revised Powertrain Control Module (PCM) software.
MODELS:
2011 - 2012
MK
Compass/Patriot
NOTE: This bulletin applies to vehicles equipped with the 2.4L engine (Sales Code
ED3) and either the Continuously Variable Transaxle (Sales Code DAV) or the
Continuously Variable Transaxle with Off-Road Crawl Ratio (Sales Code
DAW) built before March 1, 2012 (MOH 0301:XX).
SYMPTOM/CONDITION:
Customers may indicate that they hear a clatter or rattle noise coming from the engine on
the first engine start up after a long cold soak.
DIAGNOSIS:
If the customer describes the symptom, perform the Repair Procedure.
PARTS REQUIRED:
Qty.
Part No.
Description
1
05058822AB
Hose, Heater Core Supply
1
05058823AB
Hose, Heater Core Return
1
04275086AD
Label, Authorized Modification
AR (1)
68048953AB
Coolant, Engine
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Qty.
Part No.
Description
1
68024433AC
Cable, Shifter
REPAIR PROCEDURE:
1. Replace the transmission shifter cable. Refer to
DealerCONNECT>Service>TechCONNECT>21 - Transmission and Transfer
Case>Automatic - CVT>CABLE, Gearshift Control>Removal/lnstallation for additional
information .
WARNING:Do not open the radiator draincock with the system hot and under
pressure. Serious burns from coolant can occur.
2. Remove the right wheel inner splash shield.
3. Position a clean collecting container under draincock location.
NOTE: Drain pan should be free from any contamination. The engine coolant will be
reused.
4.
Without removing the pressure cap and with system not under pressure, turn
draincock counterclockwise to open.
5. The coolant reserve bottle should empty first, then remove the pressure cap.
6. Allow cooling system to drain completely.
7. Remove both supply and return heater core hoses.
8. Install new heater core supply hose (p/n 05058822AB) and heater core return hose
(p/n 05058823AB).
9. Install the right wheel inner splash shield.
10. Remove the engine cover.
11. To ensure that the purge solenoid wiring harness (Fig . 1) does not come in contact
with the heater hoses, the wire harness will require a slight modification.
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18-029-12
Fig. 1 Purge Solenoid Wire Harness
1 - Heater Core Supply and Return Hoses
2 - Purge Solenoid
3 - Purge solenoid Wire Harness
12. Loosely pull the purge solenoid wire harness straight and create a bend in the harness
approximately 10mm (0.40 in. or 3/8 - 7/16 in.) away from the harness retaining clip
edge. This bend will also create a natural bend after the current spot tape on the
harness . Then, apply 3 - 4 wraps of electrical tape securing the bend to the harness as
shown in (Fig. 2).
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18-029-12
Fig. 2 Purge Solenoid Wire Harness Routing
1 - Secured Purge Wire Harness
13. Install the engine cover.
14. Fill engine coolant system making sure that no air is trapped in the engine. Refer to
DealerCON N ECT>Service> T echCON N ECT>Service Info>07 - Cooling>Standard
Procedure>STANDARD PROCEDURE - COOLANT AIR EVACUATION for additional
information.
NOTE: Install a battery charger to ensure battery voltage does not drop below 13.2
volts. Do not allow the charging voltage to climb above 13.5 volts during the
flash process.
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.
15. Reprogram the PCM with the latest software. Follow the detailed service procedures
available in DealerCONNECT/TechCONNECT, Refer To Group 8 - Electrical>
Electronic Control Modules - Service Information > Module - Powertrain Control >
Standard Procedures> PCM/ECM Programming.
16. After PCM reprogramming, the following must be performed: clear any DTC's that
may have been set in other modules due to reprogramming. The wiTECH application
will automatically present all DTCs after the flash and allow the tech to clear them .
17. Type the necessary information on the "Authorized Modification Label" and attach it
near the VECI label.
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18-029-12
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation
No:
24-46-10-92
Description
Hose, Heater Core and Cable, Transaxle
Gearshift - Replace - (Skill Level = C; Training
Level= 2)
Amount
1.5 Hrs.
FAILURE CODE:
lzz
IService Action
TIME ALLOWANCE:
Labor Operation
No:
18-19-06-S 3
Description
Module, Powertrain Engine Controller Reprogram - (Skill Level = C; Training Level = 2)
FAILURE CODE:
IFlash Module
Amount
0.2 Hrs.