Dtc P0115 (Dtc P0115) Engine Coolant Temp. Sensor Circuit Malfunction - Suzuki Grand Vitara XL-7 Service Manual

DTC P0115 (DTC P0115) ENGINE COOLANT TEMP. SENSOR CIRCUIT MALFUNCTION

WIRING DIAGRAM
DTC CONFIRMATION PROCEDURE
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool and run engine
at idle speed for 10 sec. or more.
3) Check DTC and pending DTC by using scan tool.
TROUBLESHOOTING
STEP
1 Was "ENGINE DIAG. FLOW TABLE" performed?
2 Check Wire Harness.
1) Remove intercooler referring to
"INTERCOOLER" in Section 6E3.
2) Disconnect ECT sensor connector with ignition
switch OFF.
3) Check for proper connection to ECT sensor at
"PPL/BLK" and "BRN/WHT" wire terminals.
4) If OK, check voltage between "PPL/BLK" and
"BRN/WHT" wire terminals of harness side with
ignition switch ON.
Is voltage about 5 V?
3 Check ECT Sensor and Its Circuit
1) Connect ECT sensor to its connector.
2) Connect scan tool to DLC with ignition switch
OFF and run engine.
Does coolant temp. on scan tool vary?
ENGINE DIAGNOSIS (RHZ ENGINE WITH TRIPLE-CONNECTOR ECM) 6-1-15
ACTION
1. Engine coolant temperature sensor
2. ECM
YES
Go to Step 2.
Go to Step 3.
Substitute a known-
good ECM and
recheck.
NO
Go to "ENGINE DIAG.
FLOW TABLE".
"PPL/BLK" wire open
or shorted to
power /ground.
"BRN/WHT" wire
open.
Poor E228-8 or
E228-9 connection.
Faulty ECT sensor.