Hummer H2. Manual — part 2234

TRANSMISSION RANGE SWITCH LOGIC

Transmission Range Switch Logic

LINE PRESSURE

Line Pressure (4L60-E)

Gear Selector Position

Signal A

Signal B

Signal C

Park/Neutral

HI

LOW

HI

Reverse

LOW

LOW

HI

Drive 4

HI

LOW

LOW

Drive 3

HI

HI

LOW

Drive 2

HI

HI

HI

Drive 1

LOW

HI

HI

Invalid

LOW

HI

LOW

LOW

LOW

LOW

z

HI = Ignition voltage

z

LOW = 0 voltage

Gear Selector Position

Signal A

Signal B

Signal C

Signal P

Park (P)

LOW

HI

HI

LOW

Reverse (R)

LOW

LOW

HI

HI

Neutral (N)

HI

LOW

HI

LOW

Drive 4 (OD)

HI

LOW

LOW

HI

Drive 3 (3)

LOW

LOW

LOW

LOW

Drive 2 (2)

LOW

HI

LOW

HI

Drive 1 (1)

HI

HI

LOW

LOW

HI = Ignition voltage
LOW = 0 volts

Pressure Control Solenoid Current (Amp)

Approximate Line Pressure (PSI)

4.8L/5.3L/6.0L

0.00

198-227

0.10

197-226

0.20

189-221

0.30

181-216

0.40

168-205

0.50

154-193

0.60

137-175

0.70

114-156

0.80

90-132

0.90

64-105

2004 Hummer H2

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

COMPONENT RESISTANCE

Component Resistance

SCHEMATIC AND ROUTING DIAGRAMS

AUTOMATIC TRANSMISSION SCHEMATIC ICONS

Automatic Transmission Schematic Icons

1.00

53-85

1.10

53-68

Component

Pass

Thru Pins

Resistance at 20°C

(68°F)

Resistance at 100°C

(212°F)

Resistance to

Ground (Case)

1-2 Shift Solenoid Valve

A, E

19-24 ohm

24-31 ohm

Greater than 250

K ohm

2-3 Shift Solenoid Valve

B, E

19-24 ohm

24-31 ohm

Greater than 250

K ohm

TCC Solenoid Valve

T, E

21-26 ohm

26-33 ohm

Greater than 250

K ohm

TCC PWM Solenoid

Valve

U, E

10-11 ohm

13-15 ohm

Greater than 250

K ohm

3-2 Shift Solenoid Valve

Assembly

S, E

20-24 ohm

29-32 ohm

Greater than 250

K ohm

Pressure Control Solenoid

Valve

C, D

3-5 ohm

4-7 ohm

Greater than 250

K ohm

*Transmission Fluid

Temperature (TFT)

Sensor

M, L

3088-3942 ohm

159.3-198.0 ohm

Greater than 10

M ohm

Vehicle Speed Sensor

A, B VSS

CONN

1420 ohm @ 25°C

(77°F) (AWD/4WD)

2140 ohm @ 150°C

(302°F) (AWD/4WD)

Greater than 10

M ohm

IMPORTANT:

The resistance of this device is necessarily temperature dependent and will therefore vary far more
than any other device. Refer to Transmission Fluid Temperature (TFT) Sensor Specifications .

Icon

Icon Definition

NOTE:

The OBD II symbol is used on the circuit
diagrams in order to alert the technician that
the circuit is essential for proper OBD II
emission control circuit operation. Any circuit
which fails and causes the malfunction
indicator lamp (MIL) to turn ON, or causes
emissions-related component damage, is
identified as an OBD II circuit.

2004 Hummer H2

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

IMPORTANT:

Twisted-pair wires provide an effective
"shield" that helps protect sensitive
electronic components from electrical
interference. If the wires were covered with
shielding, install new shielding.
In order to prevent electrical interference
from degrading the performance of the
connected components, you must maintain
the proper specification when making any
repairs to the twisted-pair wires shown :

z

The wires must be twisted a minimum
of 10 turns per 31 cm (12 in) as
measured anywhere along the length of
the wires

z

The outside diameter of the twisted
wires must not exceed 6.0 mm

2004 Hummer H2

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

AUTOMATIC TRANSMISSION CONTROLS SCHEMATICS

Fig. 2: Power, BCM, PCM, Class 2, Stop Lamp Switch, Tow/Haul Switch, and Shift Solenoids
Courtesy of GENERAL MOTORS CORP.

2004 Hummer H2

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2