Suzuki Wagon R RB310, Supplementary Service Manual

Page: 116 / 254

AUTOMATIC TRANSMISSION (4 A/T) 7B-43
DTC P0710 Transmission fluid temperature sensor circuit malfunction
1. Transmission fluid temperature sensor 3. TCM
2. Coupler 4. TCM couplers (viewed from harness side)
DTC DETECTING CONDITION
• A/T fluid temperature signal input voltage too low.
• A/T fluid temperature signal input voltage does not go down although standard value of engine revolution
signal input.
Step Action Yes No
1 1) Turn ignition switch OFF and disconnect
sensor wire harness coupler.
2) Measure resistance between “Bl” wire and
“G” wire terminal of sensor side coupler.
Is it infinity or 0
Ω
?
Faulty transmission fluid
temperature sensor.
Replace transmission
temperature sensor. Go to Step 2.
2 1) Turn ignition switch OFF and disconnect
TCM couplers.
2) Check continuity between terminal “E13-3”
of disconnected harness side TCM coupler
and ground.
Is continuity indicated?
“Bl” wire shorted to
ground. Go to Step 3.
3 1) Connect sensor wire harness coupler.
2) Measure resistance between terminals
“E13-3” and “E13-16” of disconnected har-
ness side coupler.
Is it about 0
Ω
or infinity?
“Bl” or “G” wire open,
shorted each other or
poor connection of sole-
noid wire harness coupler. Go to Step 4.