CHARGING SYSTEM, Diagnostic DTC:P0516 and P0517
| DTC Code | DTC Name |
|---|---|
| P0516 | Battery Temperature Sensor Circuit Low |
| P0517 | Battery Temperature Sensor Circuit High |
DESCRIPTION
The battery temperature sensor built into the battery current sensor assembly detects battery temperature.
A thermistor is integrated into the battery temperature sensor, and the resistance in the battery temperature sensor changes according to the battery temperature.
The resistance of the thermistor in the battery temperature sensor decreases as the battery temperature increases. The resistance increases as the temperature decreases.
The battery temperature sensor is connected to the ECM. The ECM supplies 5 V from the THB terminal to the battery temperature sensor through resistor R.
The battery temperature sensor and resistor R are connected in series. This results in fluctuations in the voltage supplied from the THB terminal when the resistance changes according to the battery temperature.
The ECM determines the battery temperature according to fluctuations in voltage. When the battery temperature is high, the ECM determines to reduce the amount of current supplied from the generator in order to protect the battery.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Memory |
Note |
|---|---|---|---|---|---|---|
P0516 |
Battery Temperature Sensor Circuit Low |
Battery temperature sensor output value is less than 0.2 V for 0.5 seconds or more with the ignition switch ON (1 trip detection logic) |
|
Charge warning light does not come on |
DTC stored |
w/ Battery Current Sensor |
P0517 |
Battery Temperature Sensor Circuit High |
Battery temperature sensor output value is higher than 4.8 V for 0.5 seconds or more with the ignition switch ON (1 trip detection logic) |
|
Charge warning light does not come on |
DTC stored |
w/ Battery Current Sensor |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Before replacing the ECM, refer to Service Bulletin.
PROCEDURE
INSPECT BATTERY CURRENT SENSOR ASSEMBLY
Inspect the battery current sensor assembly.
Result
Result
Proceed to
OK (for Sedan)
A
OK (except Sedan)
B
NG
C
B CHECK HARNESS AND CONNECTOR (ECM - BATTERY CURRENT SENSOR ASSEMBLY)Click here
CHECK HARNESS AND CONNECTOR (ECM - BATTERY CURRENT SENSOR ASSEMBLY)
Disconnect the B186 ECM connector.
Disconnect the B232 battery current sensor assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open)
Tester Connection
Condition
Specified Condition
B186-87 (THB) - B232-1 (THB)
Always
Below 1 Ω
B186-118 (EIB) - B232-4 (E2)
Always
Below 1 Ω
B186-117 (VCIB) - B232-2 (VC5)
Always
Below 1 Ω
Standard Resistance (Check for Short)
Tester Connection
Condition
Specified Condition
B186-87 (THB) or B232-1 (THB) - Body ground
Always
10 kΩ or higher
B186-118 (EIB) or B232-4 (E2) - Body ground
Always
10 kΩ or higher
B186-117 (VCIB) or B232-2 (VC5) - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK HARNESS AND CONNECTOR (ECM - BATTERY CURRENT SENSOR ASSEMBLY)
Disconnect the B186 ECM connector.
Disconnect the A164 battery current sensor assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open)
Tester Connection
Condition
Specified Condition
B186-87 (THB) - A164-1 (THB)
Always
Below 1 Ω
B186-118 (EIB) - A164-4 (E2)
Always
Below 1 Ω
B186-117 (VCIB) - A164-2 (VC5)
Always
Below 1 Ω
Standard Resistance (Check for Short)
Tester Connection
Condition
Specified Condition
B186-87 (THB) or A164-1 (THB) - Body ground
Always
10 kΩ or higher
B186-118 (EIB) or A164-4 (E2) - Body ground
Always
10 kΩ or higher
B186-117 (VCIB) or A164-2 (VC5) - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR