Hummer H3. Manual — part 1547

Passenger Side Outside Rearview Mirror Connector Terminal Identification

Outside Rearview Mirror Switch

Fig. 12: Outside Rearview Mirror Switch Connector End Views
Courtesy of GENERAL MOTORS CORP.

Terminal/Tray: 8100-2506/6

Core/Insulation Crimp: E/2

Release Tool/Test Probe: 15315247/J-35616-17 (L-GN)

Pin

Wire Color

Circuit No.

Function

1

RD/WH

881

Passenger Mirror Motor Right Control

2

GY

90

Driver/Passenger Mirror Motor
Down/Left Control

3

-

-

Not Used

4

BN/WH

1498

Passenger Mirror Motor Up Control

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Mirrors - H3

Outside Rearview Mirror Switch Connector Parts Information

Outside Rearview Mirror Switch Connector Terminal Identification

DIAGNOSTIC INFORMATION AND PROCEDURES

DIAGNOSTIC STARTING POINT - MIRRORS

Begin the system diagnosis with the Diagnostic System Check - Vehicle . The Diagnostic

Connector Part Information

OEM: 15327190

Service: 88988407

Description: 8-Way F Ducon 0.8 Series (BK)

Terminal Part Information

Terminal/Tray: 15326592/19

Core/Insulation Crimp: E/2

Release Tool/Test Probe: 12094429/J-35616-64A (L-BU)

Pin

Wire Color

Circuit No.

Function

1

OG

1732

Inadvertant Power Supply Voltage

2

BK

1450

Ground

3

WH

81

Left Mirror Motor Right Control
(LHD)

YE

88

Left Mirror Motor Up Control (RHD)

4

BN/WH

1498

Right Mirror Motor Up Control (LHD)

RD/WH

881

Right Mirror Motor Right Control
(RHD)

5

GY

90

Right Mirror Motor Left Control

6

-

-

Not Used

7

RD/WH

881

Right Mirror Motor Right Control
(LHD)

BN/WH

1498

Right Mirror Motor Up Control
(RHD)

8

YE

88

Left Mirror Motor Up Control (LHD)

WH

81

Left Mirror Motor Right Control
(RHD)

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Mirrors - H3

System Check will provide the following information:

The identification of the control modules which command the system.

The ability of the control modules to communicate through the serial data circuit.

The identification of any stored diagnostic trouble codes (DTCs) and their status.

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the
system and where the procedure is located.

SYMPTOMS - MIRRORS

1. Perform the Diagnostic System Check - Vehicle before using the Symptom Tables in

order to verify that all of the following are true:

There are no DTCs set.

The control modules can communicate via the serial data link.

2. Review the system operation in order to familiarize yourself with the system functions.

Refer to the following system descriptions:

Outside Mirror Description and Operation

Automatic Day-Night Mirror Description and Operation

Visual/Physical Inspection

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

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

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:

IMPORTANT: The following steps must be completed before using the symptom

tables.

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Mirrors - H3

Automatic Day-Night Mirrors Inoperative

Power Mirrors Inoperative

AUTOMATIC DAY-NIGHT MIRRORS INOPERATIVE

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Diagnostic Fault Information

Automatic Day-Night Mirrors Inoperative

Circuit/System Description

The inside rearview mirror uses 2 photocell sensors. One sensor is the rear light sensor, located on
the face side of the mirror, facing the rear of the vehicle. The rear light sensor is used to
determine light conditions present at the mirror face. The other sensor is the front light sensor,
located on the backside of the mirror, facing the front of the vehicle. The front light sensor is used
to determine the exterior light conditions at the front of the vehicle. With a low exterior light
condition detected by the front light sensor and a high light condition from the rear light sensor,
the inside rearview mirror will automatically darken the face of the inside rearview mirror.

With the gear selector lever in the REVERSE position, backup lamp supply voltage is supplied as
an input to the inside rearview mirror. The mirror monitors this input to disable the automatic
day-night feature. This allows the driver to see objects in the mirror clearly when backing up,
regardless of the rear light sensor status.

Reference Information

Schematic Reference

Circuit

Short to

Ground

Open/High

Resistance

Short to

Voltage

Signal

Performance

Ignition 1 Voltage

2

2

-

-

Backup Lamp Supply Voltage

1

1

2

-

Ground

-

2

2

-

1. Rearview mirror remains dimmed in reverse
2. Rearview mirror does not dim

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Mirrors - H3