MALFUNCTION DETECTION FUNCTION


BHE050201026T03

Malfunction Detection Function

• In the malfunction detection function, the TCM detects malfunctions in the automatic transmission while driving.

• When vehicle driving conditions correspond with a preset malfunction detection condition, the TCM determines that the automatic transmission has a malfunction and stores the corresponding DTC.

• When a malfunction is detected, stored DTCs can be retrieved using the WDS or equivalent connected to the DLC-2.

DTC Table

×: Available

DTC No.

Condition

MIL

AT warning light illuminated

DC

Monitor item

Memory function

P0705
Transmission range (TR) switch circuit malfunction (short to power supply)
ON
YES
2
CCM
×
P0706
Transmission range (TR) switch circuit malfunction (open circuit/short to ground)
ON
YES
2
CCM
×
P0707
M range switch, up switch or down switch circuit malfunction (open circuit/short to ground)
OFF
YES
1
CCM
×
P0708
Steering shift switch circuit malfunction (open circuit/short to ground)
OFF
YES
1
CCM
×
P0712
Transmission fluid temperature (TFT) sensor circuit malfunction (short to ground)
ON
YES
1
CCM
×
P0713
Transmission fluid temperature (TFT) sensor circuit malfunction (open circuit/short to power supply)
ON
YES
1
CCM
×
P0715
Turbine sensor circuit malfunction
ON
YES
1
CCM
×
P0720
Vehicle speed sensor (VSS) malfunction (open circuit/short to ground)
ON
YES
1
CCM
×
P0731
Gear 1 incorrect (incorrect gear ratio detected)
OFF
NO
1
CCM
×
P0732
Gear 2 incorrect (incorrect gear ratio detected)
OFF
NO
1
CCM
×
P0733
Gear 3 incorrect (incorrect gear ratio detected)
OFF
NO
1
CCM
×
P0734
Gear 4 incorrect (incorrect gear ratio detected)
OFF
NO
1
CCM
×
P0743
Torque converter clutch (TCC) solenoid valve circuit malfunction (open circuit/short to ground or power supply)
ON
YES
1
CCM
×
P0748
Pressure control solenoid circuit malfunction (open circuit/short to ground or power supply)
OFF
YES
1
CCM
×
P0753
Shift solenoid A circuit malfunction (open circuit/short to ground or power supply)
ON
YES
1
CCM
×
P0758
Shift solenoid F circuit malfunction (open circuit/short to ground or power supply)
ON
YES
1
CCM
×
P0763
Shift solenoid B circuit malfunction (open circuit/short to ground or power supply)
ON
YES
1
CCM
×
P0768
Shift solenoid C circuit malfunction (open circuit/short to ground or power supply)
ON
YES
1
CCM
×
P0841
Oil pressure switch B circuit malfunction
OFF
YES
2
CCM
×
P0846
Oil pressure switch C circuit malfunction
OFF
YES
2
CCM
×
P0871
Oil pressure switch F circuit malfunction
OFF
YES
2
CCM
×
P0960
GND return circuit malfunction
ON
YES
1
CCM
×
P1759
2-4 brake fail-safe valve malfunction
OFF
YES
2
CCM
×
P1764
Low and reverse brake fail-safe valve malfunction
OFF
YES
2
CCM
×
U0073
CAN bus off
OFF
NO
1
CCM
×
U0100
TCM cannot receive any signals from PCM
ON
YES
1
CCM
×