Hummer H1 (2002+). Manual — part 55
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Transmission/Transfer Case 5-19
®
05745159
Trouble Code Identification
DTC
Description
DTC Type
Default Action
P0218
Transmission Fluid Overtemperature
D
1.
The PCM freezes shift adapts.
2.
DTC P0218 is stored in PCM history.
P0560
Sysem Voltage Malfunction
D
1.
The PCM inhibits TCC engagement.
2.
The PCM freezes shift adapts.
3.
The PCM turns off the PC Sol. Valve.
4.
The PCM commands an immediate landing into 2nd
gear.
5.
DTC P0560 is stored in PCM history.
P0711
Transmission Fluid Temperature Sen-
sor Circuit Range/Performance
D
1.
The PCM uses a TFT default value of 140° C (284°F).
2.
The PCM freezes shift adapts.
3.
DTC P0711 is stored in the PCM history.
P0712
Transmission Fluid Temperature Sen-
sor Circuit Low Input
D
1.
The PCM freezes shift adapts.
2.
The PCM uses a TFT default value of 140° C (284°F).
3.
DTC P0712 is stored in PCM history.
P0713
Transmission Fluid Temperature Sen-
sor Circuit High Input
D
1.
The PCM freezes shift adapts.
2.
The PCM uses a TFT default value of 140° C (284°F).
3.
DTC P0713 is stored in PCM history.
P0716
Input Speed Sensor Circuit Intermit-
tent
B
1.
The PCM illuminates the MIL.
2.
The PCM freezes shift adapts.
3.
The PCM commands maximum line pressure
4.
DTC P0716 is stored in PCM history.
P0717
Input Speed Sensor Circut Low Input
B
1.
The PCM illuminates teh MIL.
2.
The PCM freezes shift adapts.
3.
The PCM commands maximum line pressure.
4.
DTC P0717 is stored in PCM history.
P0719
Brake Switch Circuit Low Input
D
DTC P0719 is stored in PCM history.
P0722
Output Speed Sensor Low Input
B
1.
The PCM illuminates the MIL.
2.
The PCM freezes shift adapts
3.
The PCM commands maximum line pressure.
4.
The PCM calculates the OSS from the ISS.
5.
DTC P0722 is stored in the PCM history.
P0723
Output Speed Sensor Intermittent
B
1.
The PCM illuminates the MIL.
2.
The PCM freezes shift adapts
3.
The PCM commands maximum line pressure.
4.
The PCM calculates the OSS from the ISS.
5.
DTC P0723 is stored in the PCM history.
P0724
Brake Switch Circuit High Input
D
1.
Apply TCC if APP is greater than 0.5% and the vehi-
cle speed is greater than 30 mph.
2.
DTC P0724 is stored in PCM history.
P0730
Incorrect gear ratio
D
1.
The PCM commands maximum line pressure.
2.
The PCM freezes shift adapts.
3.
DTC P0730 is stored in PCM history.
5-20
Transmission/Transfer Case
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®
P0741
Torque Converter Clutch System
Stuck Off
B
1.
The PCM illuminates the MIL.
2.
The PCM inhibits TCC engagement.
3.
The PCM inhibits fourth gear engagement.
4.
The PCM commands increased line pressure.
5.
DTC P0741 is stored in PCM history.
P0742
Torque Converter Clutch System
Stuck On
B
1.
The PCM illuminates the MIL.
2.
The PCM freezes shift adapts.
3.
The PCM commands maximum line pressure.
4.
DTC P0742 is stored in PCM history
P0748
Pressure ControSolenoid Circuit Elec-
trical
D
1.
The PCM freezes shift adapts.
2.
The PCM commands maximum line pressure by dis-
abling the PC Sol. Valve.
3.
DTC P0748 is stored in PCM history.
P0751
1-2 Shift Solenoid Valve Performance
B
1.
The PCM illuminates teh MIL.
2.
Teh PCM freezes shift adapts.
3.
The PCM commands maximum line pressure.
4.
DTC P0751 is stored in PCM history.
P0753
1-2 Shift Solenoid Valve Electrical
A
1.
The PCM illuminates the MIL.
2.
The PCM freezes shift adapts.
3.
The PCM commands maximum line pressure.
4.
DTC P0753 is stored in PCM history.
P0756
2-3 Shift Solenoid Valve Performance
A
1.
The PCM illuminates the MIL.
2.
The PCM commands an immediate landing into sec-
ond gear.
3.
The PCM freezes shift adapts
4.
The PCM commands maximum line pressure.
5.
DTC P0756 is stored in PCM history.
P0758
2-3 Shift Solenoid Valve Electrical
A
1.
The PCM illuminates the MIL
2.
The PCM commands an immediate landing to second
gear.
3.
The PCM freezes shift adapts.
4.
The PCM commands maximum line pressure.
5.
DTC P0758 is stored in the PCM history
P1810
Transmission Fluid Pressure Manual
Valve Position Swith Assembly Cir-
cuit Malfunction
B
1.
The PCM illuminates the MIL.
2.
The PCM freezes shift adapts.
3.
The PCM assumes a D4 shift pattern.
4.
The PCM commands maximum line pressure.
5.
The PCM commands TCC apply with 4th gear com-
manded ON.
6.
DTC P1810 is stored in the PCM history.
P1811
Maximum Adapt and Long Shift
D
1.
The PCM freezes shift adapts.
2.
The PCM commands maximum line pressure
3.
DTC P1811 is stored in the PCM history.
Trouble Code Identification
DTC
Description
DTC Type
Default Action
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Transmission/Transfer Case 5-21
®
05745159
P1860
Torque Converter Clutch Pulse Width
Modulation Solenoid Circuit Electri-
cal
A
1.
The PCM illuminates teh MIL.
2.
The PCM inhibits TCC engagement.
3.
The PCM inhibits fourth gear engagement.
4.
The PCM freezes shift adapts.
5.
DTC P1860 is stored in PCM history
P1870
Transmission Component Slipping
B
1.
The PCM illuminates the MIL
2.
The PCM commands maximum line pressure.
3.
The PCM inhibits TCC engagement.
4.
The PCM inhibits fourth gear engagement
5.
The PCM freezes shift adapts
6.
DTC P1870 is stored in PCM history
P1875
Four-Wheel Drive Low Switch Circuit
Electrical
B
1.
The PCM illuminates the MIL.
2.
The PCM freezes shift adapts.
3.
The PCM assumes a 4wd Lo state if the switch fails
when open, or the PCM assumes a 4wd High state if
the switch fails when closed, for a transmission shift
pattern.
4.
DTC P1875 is stored in PCM history.
Trouble Code Identification
DTC
Description
DTC Type
Default Action
5-22
Transmission/Transfer Case
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®
Transmission Wiring Diagrams
Figure 5-22: Transmission Wiring Diagram 1 of 6
FUSE 2D
20 AMP
INTERIOR
STS
LAMP
MIL
LAMP
FUSE 3A
20 AMP
EXTERIOR
HOT AT
ALL TIMES
HOT IN RUN
AND START
HOT IN RUN
AND START
FUSE 4B
5 AMP
INTERIOR
G2
G4
FUSE 1H
5 AMP
INTERIOR
DLC
POWERTRAIN
CONTROL
MODULE
SERIAL DATA
CLASS II
MIL
CONTROL
STS LAMP
CONTROL
914 PP
16
4
2
59 BK
C28-C8
570 BK
C28-D7
C28-D6
GROUND
GROUND
570 BK
BATT
BATT
IGN
IGN
C28-C13
C28-D13
C28-C12
C28-C11
C28-D11
TO
C29-B3
537 OR
239 PK
C1-10
C10-J
C10-H
C10-C
C3-G5
C3-F3
C1-25
C1-28
C28-C14
658 BR
714 RD
STATUS
CENTER
HOT AT
ALL TIMES
9-S12-064
554 GRY
30
GR
Y
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