5A-50 Automatic Transmission/Transaxle:
DTC P0712 Transmission Fluid Temperature Sensor “A” Circuit Low
S5JB0A5104029
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories by using scan tool.
3) Start engine.
4) Keep engine running at idle speed for 1 minute or more.
5) Check DTC, pending DTC and freeze-frame data.
DTC Troubleshooting
5V
E92-11
E92-12
YEL/BLK
ORN
2
1
3
65
16 15 14 13 12 11
43
24 23 2122
10 9 8 7
21
1920 18 17
E92
17 16
26 25
15 14
65 342
13 12
23 2224
11 10 9
21 20 19
87
18
1
E93
I5JB0A510021-02
1. Transmission fluid temperature sensor 3. Terminal arrangement of TCM connector (viewed from harness side)
2. TCM
DTC Detecting Condition Trouble Area
Transmission temperature sensor terminal voltage is less than
0.05 V for 10 seconds or more after ignition switch ON.
(1 driving cycle detection logic)
• Transmission fluid temperature sensor or its
circuit.
•TCM
Step Action Yes No
1 Was “A/T System Check” performed? Go to Step 2. Go to “A/T System
Check: ”.
2 Check transmission fluid temperature sensor A circuit
for ground short
1) Turn ignition switch OFF.
2) Disconnect TCM connectors from TCM.
3) Check for proper connection to transmission fluid
temperature sensor at terminal “E92-11” and “E92-12”.
4) If OK, check continuity between terminal “E92-11” of
disconnected harness side TCM connector and ground.
Is continuity indicated?
Transmission fluid
temperature sensor
circuit is shorted to
ground. If circuit is OK,
go to Step 3.
Go to Step 3.
3 Inspection transmission fluid temperature sensor
1) Inspection transmission fluid temperature sensor
referring to “Transmission Fluid Temperature Sensor
Inspection: ”.
Is result satisfactory?
Intermittent trouble or
faulty TCM. Check for
intermittent trouble
referring to “Intermittent
and Poor Connection
Inspection: in Section
00”. If OK, substitute a
known-good TCM and
recheck.
Replace valve body
harness including
transmission fluid
temperature sensor
referring to
“Transmission Fluid
Temperature Sensor
Removal and
Installation: ”.
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