AUTOMATIC TRANSMISSION (4 A/T) 7B-31
DTC P0753 Shift solenoid-A (No.1) electrical
DTC P0758 Shift solenoid-B (No.2) electrical
DTC P0743 TCC (lock-up) system electrical
1. Shift solenoid-A (No.1) 4. TCM
2. Shift solenoid-B (No.2) 5. TCM couplers (viewed from harness side)
3. TCC (lock-up) solenoid
DTC DETECTING CONDITION
• Solenoid output voltage too high although TCM orders solenoid to turn OFF.
• Solenoid output voltage too low although TCM orders solenoid to turn ON.
Step Action Yes No
1 1) Turn ignition switch OFF and disconnect
solenoid coupler.
2) Measure the resistance between each sole-
noid terminal of the solenoid side coupler
and transmission ground.
Is it 11 – 15 Ω?
(See figure.)
Go to Step 2. • Solenoid lead wire
open or shorted to
ground.
• Malfunction of solenoid.
2 1) Disconnect TCM couplers.
2) Measure the resistance between terminal
“E13-10”, “E13-23” or “E13-22” of the dis-
connected harness side TCM coupler and
body ground.
Is it about 0 Ω?
(See figure.)
“B/R”, “B/O”, or “Br” wire
shorted to ground.
Go to Step 3.
3 1) Connect solenoid coupler.
2) Measure the resistance between each sole-
noid terminal of the disconnected harness
side TCM coupler and body ground.
Is it 11 – 15 Ω?
Go to Step 4. “B/R”, “B/O” or “Br” wire
open or poor connection
of shift solenoid coupler.
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