MERCEDES-BENZ ML430 1997 Complete Repair Manual

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
me
Saturday, October 02, 2010 3:44:45 PMPage 17 © 2006 Mitchell Repair Information Company, LLC.

Fig. 5: Hand Held Tester Grap hic Information (2000 Models)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
FAULT CODES
Fig. 6: Diagnostic Trouble Code (DTC) Memory (2000 Models-1 Of 4)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
me
Saturday, October 02, 2010 3:44:45 PMPage 18 © 2006 Mitchell Repair Information Company, LLC.

Fig. 7: Diagnostic Trouble Code (DTC) Memory (2000 Models-2 Of 4)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig. 8: Diagnostic Trouble Code (DTC) Memory (2000 Models
-3 Of 4)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
me
Saturday, October 02, 2010 3:44:46 PMPage 19 © 2006 Mitchell Repair Information Company, LLC.

Fig. 9: Diagnostic Trouble Code (DTC) Memory (2000 Models-4 Of 4)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
CLEARING FAULT CODES
Connect Hand-Held Tester (965 589 00 01) to Data Link Connector (DLC). DLC is located in right rear corner
of engine compartment. It may be necessary to use Adapter (965 589 00 40 or 965 589 00 50) to connect HHT
to DLC. After HHT displa ys module number and version, press return key to start sequence. Using HHT,
follow HHT prompts to clear SRS faul t codes. SRS codes are clear when ignition is turned on and SRS warning
light functions normally. See SYSTEM OPERATION CHECK
.
UNDERSTANDING DIAGNOSTIC CHART INFORMATION
SRS & ETR Diagnosis Chart Column Identification
First column of chart identifies TEST STEP (1.0 for example). See Fig. 10 . Second column of chart identifies
HHT fault code (017, 003 for example). First code in column is for ve hicles without side air bags. Second code
in column (when listed) is for ve hicles with side air bags only. Ot her 5 columns are self-explanatory.
Using SRS & ETR Diagnosis Chart
For reading and understanding fault code diagnosis chart, use the following example: Read test step 3.0 (first
column), HHT fault Code 002, 004 (second column). See Fig. 10
. Read TEST SCOPE-HHT ACTUAL
VALUE NO.-TEXT column (third column). Driver-side air bag squib connector R12-3 is being tested. HHT
will identify if problem is with too much resistance or not enough resistance in driver-side air bag squib circuit.
Read TEST CONDITION column (fifth column). Test ci rcuit with HHT connected to DLC, with ignition in
position "2". Read NOMINAL VALUE-HHT DISPLAY column (sixth column). HHT will display a check or
an "F". If HHT displays a check, circuit is okay. If HHT displays an "F", go to step 3.1.
Read TEST CONNECTION (NOT FOR HHT) column (fort h column). Driver-Side air bag squib connector
R12-3, terminals No. 1 and 2 are id entified. Read TEST CONDITION column. Test circuit with HHT
connected to DLC and igni tion key removed. Remove driver-side air bag module. Disconnect driver-side air
bag module squib connector R12-3. Conn ect Resistance Substitution Unit (124 589 09 63) to driver-side air bag
module squib connector (harness side). Set resistance substitution unit to 2 ohms. Turn ignition key to position
"2". Read NOMINAL VALUE-HHT DISPLAY column. If HHT displa
ys a check, replace driver-side air bag
NOTE: Refer to table to properly identify components or connectors being tested. See
COMPONENT IDENTIFICATION
table.

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
me
Saturday, October 02, 2010 3:44:46 PMPage 20 © 2006 Mitchell Repair Information Company, LLC.

module. If HHT displays an "F", go to step 3.2.
Read TEST CONNECTION (NOT FOR HHT) column. Horn -air bag clockspring connector A45x1, terminals
No. 1 and 2 are identified. Read TEST CONDITION column. Test circuit with HHT connected to DLC.
Remove ignition key. Connect Resist ance Substitution Unit (124 589 09 63 00) to horn-air bag clockspring
connector A45x1. Set resistance s ubstitution unit to 2 ohms. Read NOMINAL VALUE-HHT DISPLAY
column. If HHT displays a check, check horn-air ba g clockspring for continuity. Replace horn-air bag
clockspring as necessary. If HHT displays an "F", go to step 3.4.
MODEL IDENTIFICATION
COMPONENT IDENTIFICATION
NOTE: Some testing is identified
by model number. Refer to table to identify models by
model number. See MO DEL IDENTIFICATION
table.
Model NumberModel
129SL Class
140S Class
163M Class
170SLK Class
202C Class
203C 240 & C 320
208CLK Class
210E Class
215CL 500
220S 430 & S 500
ComponentManufacturer's Designation
A1e15SRS warning light
A45Horn-air bag clockspring
A53Driver-side air bag sensor
A54Passenger-side air bag sensor
B41-1Passenger-side seat occupied recognition sensor
N2-2SRS control module
N2-7SRS control module
N72e1Automatic child seat recognition light
R12-1Driver-side ETR squib connector
R12-2Passenger-side ETR squib connector
R12-3Driver-side air bag squib connector
R12-8Passenger-side air bag squib connector
R12-9Side air bag (driver-side) squib connector
R12-10Side air bag (passenge r-side) squib connector
R12-20Passenger-side air bag squib

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
me
Saturday, October 02, 2010 3:44:46 PMPage 21 © 2006 Mitchell Repair Information Company, LLC.

CONTROL MODULE PROGRAMMING
After control module replacement, SRS warning light will blink or illuminate continuously. This indicates need
to program and set paramete rs of SRS control module. This process requires use of Hand-Held Tester (965 589
00 01). During programming, the follow ing conditions need to be met:
Vehicles Without Side Air Bag
Version with passenger-side air bag module, when replac ing SRS control module is to be set to YES when
programming control module. Version with seat belt buckle switch is to be programmed NO.
Vehicles With Side Air Bag
Version is set to YES when replacing SRS control module. Version with seat belt buckle switch is set to YES.
Seat occupation recogni tion is set to YES.
Parameters
After programming, SRS warning light wi ll continue to blink, indicating need to set parameters. Currently,
parameters set is identical for all models.
DIAGNOSTIC TESTS
R12-21Driver-side air bag squib
R12-22Left window air bag squib
R12-23Right window air bag squib
S68-3Driver-side belt buckle switch
S68-4Passenger-side belt buckle switch
W26Control module ground
X11-4Data link connector
X11-1310-pin SRS test connection

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
me
Saturday, October 02, 2010 3:44:46 PMPage 22 © 2006 Mitchell Repair Information Company, LLC.

Fig. 10: SRS & ETR Diagnosis (2000 Models, Except E Class-1 Of 17)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
me
Saturday, October 02, 2010 3:44:46 PMPage 23 © 2006 Mitchell Repair Information Company, LLC.

Fig. 11: SRS & ETR Diagnosis (2000 Models, Except E Class-2 Of 17)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
me
Saturday, October 02, 2010 3:44:46 PMPage 24 © 2006 Mitchell Repair Information Company, LLC.

Fig. 12: SRS & ETR Diagnosis (2000 Models, Except E Class-3 Of 17)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig. 13: SRS & ETR Diagnosis (2000 Models, Except E Class
-4 Of 17)

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
me
Saturday, October 02, 2010 3:44:46 PMPage 25 © 2006 Mitchell Repair Information Company, LLC.

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig. 14: SRS & ETR Diagnosis (2000 Models, Except E Class
-5 Of 17)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

2001 Mercedes-Benz ML320
2000-01 ACCESSORIES/SAFETY EQUIPMENT Merc edes-Benz - Air Bag Restraint Systems
me
Saturday, October 02, 2010 3:44:46 PMPage 26 © 2006 Mitchell Repair Information Company, LLC.