Dtc P1705/Dtc No.51 Engine Coolant Temperature Signal Circuit - Suzuki Baleno Manual

7B1-62 AUTOMATIC TRANSMISSION

DTC P1705/DTC NO.51 ENGINE COOLANT TEMPERATURE SIGNAL CIRCUIT

WIRING DIAGRAM
TROUBLESHOOTING
STEP
1 Was "A / T DIAGNOSTIC FLOW TABLE" performed?
2 Is there DTC related to ECT sensor (DTC P0115/DTC NO.14
or 15)?
3 Check Engine Coolant Temp. Signal.
When using SUZUKI scan tool:
1) Connect SUZUKI scan tool to DLC with ignition switch OFF.
2) Start cold engine.
3) Check "COOLANT TEMP SIGNAL" displayed on scan tool.
Coolant temp.
Below 50_C, 122_F : LOW
Over 50_C, 122_F
Is check result satisfactory?
When not using SUZUKI scan tool:
1) Start cold engine.
2) Check duty, high voltage rate of duty cycle, (voltage) be-
tween terminal E25-7 of TCM and ground.
Coolant temp.
–5 – 50_C, 23 – 122_F : 30 – 40% (2.6 – 4.6 V)
Over 50_C, 122_F
Is check result satisfactory?
4 Check Engine Coolant Temp. Signal Circuit for Open or Short.
1) Turn ignition switch OFF and disconnect ECM
connectors.
2) Check for proper connection to ECM at terminal C20-5
(G16), E92-22 (G16), E92-11(J18) or E92-17 (J18).
3) If OK, then turn ignition switch ON and check
voltage between terminal C20-5 (G16), E92-22(G16),
E92-11 (J18) or E92-17 (J18) of disconnected ECM connec-
tor and ground.
Is it 9 – 14 V?
ACTION
: HIGH
: 60 – 70% (5.1 – 9.3 V).
1. TCM
2. ECM
3. Terminal arrangement of TCM coupler
(Viewed from harness side)
NOTE:
*1: Vehicle with WU-TWC
*2: Vehicle without WU-TWC
YES
Go to Step 2. Go to "A / T DIAG-
NOSTIC FLOW
TABLE".
Go to applicable Go to Step 3.
DTC table in
Section 6E1,
6E3, 6-1 or 6-2.
Intermittent Go to Step 4.
trouble or faulty
TCM. Check for
intermittent
referring to "IN-
TERMITTENT
AND POOR
CONNECTION"
in Section 0A.
Substitute a "Gr / B" circuit open
know-good ECM or shorted to
and recheck. ground, poor E25-7
connection.
If wire and connec-
tions are OK, sub-
stitute a known-
good TCM and
recheck.
NO