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20. Install the two driver air bag module bolts.
21. Install the two steering wheel back cover plugs.
22. Restore the vehicle to operating condition.
1. WARNING: To reduce the risk of serious personal injury, read and follow all
warnings, cautions, notes, and instructions in the supplemental restraint system
(SRS) deactivation/reactivation procedure.
Reactivate the supplemental restraint system (SRS). For additional information, refer to
Supplemental Restraint System (SRS) Deactivation and Reactivation in the General
Procedures portion of this section.
2. WARNING: The restraint system diagnostic tool is for restraint system
service only. Remove from the vehicle prior to road use. Failure to remove could
result in injury and possible violation of vehicle safety standards.
With all the restraint system diagnostic tools removed, prove out the supplemental
restraint system (SRS). For additional information, refer to Air Bag Supplemental Restraint System (SRS) in the Diagnosis and Testing portion of this section. Klj . 10 ba
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SPECIFICATIONS
SECTION 502-
00: Frame and Body Mounting 2003 Mustang Workshop Manual Torque Specifications
Description Nm lb-
ft Engine mount nuts (3.8L engine) 115 85
Engine mount nuts (4.6L engine) 150 111
Front subframe lower bolts 90 66
Front subframe upper bolts 115 85
Front subframe brace bolts 41 30
Front subframe support, front and rear outboard bolts (convertible vehicles only) 63 46
Front subframe support, rear inboard bolts (convertible vehicles only) 30 22
HEGO connector bracket nut 47 35
Rear subframe bolts 103 76
Transmission support insulator to transmission extension housing bolts 70 52
Transmission support insulator-
to-rear engine support nut 70 52
Transmission support crossmember to transmission support member through bolts and
nuts 63 46 Klj . 1 ba
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DESCRIPTION AND OPERATION
Frame Assembly
Underbody misalignment can affect front and rear wheel alignment, the operation of the suspension
parts and drivetrain operation. Window glass cracks, door and window opening concerns, and air or
water leaks at the doors are often caused by improperly tightened bolts and body misalignment.
Every structural member and outer panel is designed to offer the maximum protection in the event of a
collision.
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GENERAL PROCEDURES
Body Misalignment Check
1. CAUTION: Do not attempt to correct any serious misalignment with one
pulling/pushing operation. Damage to structure may occur.
NOTE: All body alignment measurements are made without trim and from metal to metal.
To check the body alignment, take two opposite diagonal measurements between the front,
center or rear pillars. Take the measurements between reference points, such as crease lines
or weld joints which are diagonally opposite each other on the two pillars being measured.
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GENERAL PROCEDURES
Underbody Misalignment Check
Underbody Dimensions
SECTION 502-
00: Frame and Body Mounting 2003 Mustang Workshop Manual Item Part Number Description
1 — 1390.65 mm (54.750 in)
2 — 1535.75 mm (61.43 in)
3 — 1123.25 mm (44.93 in)
4 — 1450.97 mm (57.125 in)
5 — 420.68 mm (16.5622 in)
6 — 1450.97 mm (57.125 in)
7 — 1065.28 mm (41.9400 in)
8 — 420.68 mm (16.5622 in)
9 — 1141.41 mm (44.9373 in)
10 — 857.00 mm (33.740 in)
11 — 751.84 mm (29.600 in)
12 — 1670.05 mm (62.750 in)
13 — 1352.55 mm (53.250 in)
14 — 1212.00 mm (47.716 in)
15 — 802.40 mm (31.5905 in)
16 — 802.40 mm (31.5905 in)
17 — 717.55 mm (28.250 in) Klj . 1 ba
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1. Underbody dimensions tolerances are ±
3.175 mm (0.125 in). Reference dimensions are not
controlled dimensions. Reference points are ± 4.76 mm (0.1875 in). All underbody dimensions
are detailed to the centerline of existing holes in the underbody assembly.
2. Inspect all unibody structural members for cracks, twists or bends. Check all welded connections for cracks. Inspect support brackets for looseness. 18 — 325.43 mm (12.8122 in)
19 — 520.70 mm (20.500 in)
20 — 792.16 mm (31.1873 in)
21 — 992.18 mm (39.0621 in)
22 — 863.60 mm (34.00 in)
23 — 522.28 mm (20.5622 in)
24 — 1219.20 mm (48.00 in)
25 — 1454.15 mm (57.250)
26 — 893.76 mm (35.1873 in)
27 — 1484.31 mm (58.4373 in)
28 — 792.16 mm (38.1873 in)
29 — 819.15 mm (32.250 in)
30 — 404.81 mm (15.9374 in)
31 — 684.21 mm (26.9374 in)
32 — 522.28 mm (20.5622 in)
33 — 1181.10 mm (46.500 in)
34 — 385.76 mm (15.1874 in)
35 — 385.76 mm (15.1874 in)
36 — 746.12 mm (29.375 in)
37 — 713.83 mm (28.1035 in)
38 — RH 758.82 mm RH (29.875 in)
38 — LH 755.65 mm LH (29.750 in)
39 — 114.30 mm (4.500 in)
40 — 127.00 mm (5.00 in)
41 — 152.40 mm (6.00 in)
42 — 96.93 mm (3.8122 in)
43 — 373.06 mm (14.6874 in)
44 — 369.88 mm (14.5622 in) Klj . 2 ba
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