Hummer H3. Manual — part 1575

Fig. 12: Seat Motors - Passenger (AG2) Connector End Views
Courtesy of GENERAL MOTORS CORP.

Passenger Power Seat Motor Connector Parts Information

Passenger (AG2) Seat Motors Connector Terminal Identification

Connector Part Information

OEM: 12064754

Service: 15305872

Description: 6-Way M Metri-Pack 280 Series (BK)

Terminal Part Information

Terminal/Tray: 12034047/2

Core/Insulation Crimp: C/D

Release Tool/Test Probe: 12094430/J-35616-5 (PU)

Pin

Wire Color

Circuit No.

Function

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Power Seats - H3

DIAGNOSTIC INFORMATION AND PROCEDURES

DIAGNOSTIC STARTING POINT - SEATS

Begin the system diagnosis by reviewing the system Description and Operation. Reviewing the
Description and Operation information will help you determine the correct symptom diagnostic
procedure when a malfunction exists. Reviewing the Description and Operation information will
also help you determine if the condition described by the customer is normal operation. Refer to
Symptoms - Power Seats in order to identify the correct procedure for diagnosing the system
and where the procedure is located.

SYMPTOMS - POWER SEATS

Visual/Physical Inspection

Inspect for aftermarket devices which could affect the operation of the power seat system.
Refer to Checking Aftermarket Accessories .

Inspect the easily accessible or visible system components for obvious damage or conditions
which could cause the symptom.

A

TN

285

Passenger Seat Horizontal Motor
Forward Control

B

L-GN

284

Passenger Seat Horizontal Motor
Rearward Control

C

D-GN

286

Passenger Seat Front Vertical Motor
Up Control

D

D-BU

287

Passenger Seat Front Vertical Motor
Down Control

E

YE

282

Passenger Seat Rear Vertical Motor
Up Control

F

L-BU

283

Passenger Seat Rear Vertical Motor
Down Control

IMPORTANT: Review the system description in order to familiarize yourself

with the system functions. Refer to one of the following
descriptions:

Lumbar Switch Replacement

Power Seats System Description and Operation

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Power Seats - H3

Inspect the power seat for proper mechanical operation.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to
Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the
symptom:

Lumbar Support Inoperative

Power Seat Inoperative

LUMBAR SUPPORT INOPERATIVE

Lumbar Support Inoperative

Step

Action

Yes

No

Schematic Reference: Driver Seat Schematics and Passenger Seat Schematics
Connector End View Reference: Power Seat Connector End Views
DEFINITION: The power lumber function is inoperative, all other power seat functions
operate normal.

1

Did you review the Power Seat System
Description and Operation and perform the
necessary inspections?

Go to Step 2 Go to

2

Attempt to operate all of the power seat
adjuster motors through their full range of
adjustment.
Do all of the power seat adjuster motors
operate properly?

Go to Testing
for Intermittent
Conditions and
Poor
Connections

Go to Step 3

3

Are all of the power seat adjuster motors
inoperative?

Go to Power
Seat
Inoperative

Go to Step 4

4

1. Disconnect the lumbar adjuster motor

connector.

2. Connect a test lamp across the motor

control circuit terminals.

3. Press the power lumbar switch in both

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Power Seats - H3

POWER SEAT INOPERATIVE

Power Seat Inoperative

directions.

Does the test lamp illuminate when the
switch is pressed in both directions?

Go to Step 6

Go to Step 5

5

1. Disconnect the power lumbar switch

connector.

2. Test the lumbar adjuster motor control

circuits for an open or short to
ground. Refer to Circuit Testing and
Wiring Repairs .

Did you find and correct the condition?

Go to Step 10

Go to Step 8

6

Inspect for poor connections at the lumbar
adjuster motor. Refer to Testing for
Intermittent Conditions and Poor
Connections and Connector Repairs .
Did you find and correct the condition?

Go to Step 10

Go to Step 7

7

Replace the lumbar adjuster motor. Refer
to Front Seat Lumbar Support
Replacement.
Is the repair complete?

Go to Step 10

-

8

Inspect for poor connections at the power
lumbar switch. Refer to Testing for
Intermittent Conditions and Poor
Connections and Connector Repairs .
Did you find and correct the condition?

Go to Step 10

Go to Step 9

9

Replace the power lumbar switch. Refer to
Power Seat Switch Replacement.
Is the repair complete?

Go to Step 10

-

10

Operate the system in order to verify the
repair.
Did you correct the condition?

System OK

Go to Step 2

Step

Action

Yes

No

Schematic Reference: Driver Seat Schematics and Passenger Seat Schematics

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Power Seats - H3