Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1861
7A2-60 DIAGNOSIS
Reference:
When the low clutch duty solenoid is operated, following signal is outputs.
Measurement terminal: B9 (C95) and B22 (C95)
-AC range by circuit tester: Approximately 6.8V
Low Clutch Duty Solenoid Reference Wave Form
Measurement Terminal: B9 (+)
B22 (-)
Measurement Scale: 5V/div
20ms/div
Measurement Condition: D range 4th gear
Measurement Terminal: B9 (+)
B22 (-)
Measurement Scale: 5V/div
20ms/div
Measurement Condition: P, N range in idle
DIAGNOSIS 7A2-61
DTC P0748 (Flash Code 35) Line Pressure Solenoid Failure
Control Valve
TCM
B17
B23
BLK
Lock-up Solenoid
Terminal
Assembly
VIO
Line Pressure Solenoid
E54
(4)
(6)
H23
(14)
(6)
C95
(17)
(23)
BLK
VIO
Setting Condition:
•
The line pressure solenoid signal is open circuit or short circuit.
(The voltage different from the output ON/OFF signals was detected while the TCM monitors the solenoid output
voltage.)
Fail Safe:
•
The operation of the line pressure solenoid is stopped (OFF).
Possible Cause:
•
Line pressure solenoid malfunction.
•
Line pressure solenoid harness open (Off) circuit or short (On) circuit.
7A2-62 DIAGNOSIS
•
Open circuit, short circuit to battery or short circuit to ground between line pressure solenoid terminal 6 and TCM
terminal B23 (C95).
•
Insufficient ground condition of the line pressure solenoid.
•
Poor connection of each connector.
Reference:
When the line pressure solenoid is operated, following signal is outputted.
Measurement terminal: B23 (C95) and B22 (C95)
-At N rage: Battery voltage
-At D range: Less than 1V
DIAGNOSIS 7A2-63
DTC P1860 (Flash Code 36) Lock-up Duty Solenoid Failure
Control Valve
TCM
B17
B23
B
Lock-up Solenoid
Terminal
Assembly
V
Line Pressure Solenoid
E54
(4)
(6)
H23
(14)
(6)
C95
(17)
(23)
B
V
Setting Condition:
•
The lock-up duty solenoid signal is open circuit or short circuit.
(The voltage different from the output ON/OFF signals was detected while the TCM monitors the solenoid output
voltage.)
Fail Safe:
•
The lock-up is inhibited.
Possible Cause:
•
Lock-up duty solenoid malfunction.
•
Open (Off) circuit or short (On) circuit of the lock-up duty solenoid.
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