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 detects the battery temperature. The battery current sensor assembly has a built-in thermistor with a resistance that changes in response to changes in the battery temperature. When the battery temperature is low the thermistor resistance increases, and when the temperature is high the resistance decreases. The battery temperature sensor is connected to the power management control ECU. A 5 V power supply voltage is supplied to the battery temperature sensor from terminal THB of the power management control ECU via resistor R. As resistor R and the battery temperature sensor are connected in series, when the resistance changes in response to changes in the battery temperature, the electric potential at terminal THB also changes. Based on this signal, the power management control ECU protects the battery by reducing the charge current when the battery temperature is high.
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
P0516 |
When the ignition switch is ON, the battery temperature sensor output is 0.2 V or less for 0.5 seconds or more (1 trip detection logic). |
|
P0517 |
When the ignition switch is ON, the battery temperature sensor output is 4.8 V or higher for 0.5 seconds or more (1 trip detection logic). |
|
WIRING DIAGRAM
PROCEDURE
INSPECT BATTERY CURRENT SENSOR ASSEMBLY
Inspect the battery current sensor assembly (Click here).
Table 1. Result Result
Proceed to
OK
w/ Entry and Start System
A
w/o Entry and Start System
B
NG
C
CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BATTERY CURRENT SENSOR)Click here
CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BATTERY CURRENT SENSOR)
Disconnect the H70 power management control ECU connector.
Disconnect the D6 battery current sensor assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
H70-23 (VC) - D6-2 (VC5)
Always
Below 1 Ω
H70-25 (E2) - D6-4 (E2)
H70-28 (THB) - D6-1 (THB)
H70-23 (VC) or D6-2 (VC5) - Body ground
Always
10 kΩ or higher
H70-25 (E2) or D6-4 (E2) - Body ground
H70-28 (THB) or D6-1 (THB) - Body ground
Table 2. Result Result
Proceed to
OK
for LHD
A
for RHD
B
NG
C
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BATTERY CURRENT SENSOR)
CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BATTERY CURRENT SENSOR)
Disconnect the H73 power management control ECU connector.
Disconnect the D6 battery current sensor assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
H73-12 (VC) - D6-2 (VC5)
Always
Below 1 Ω
H73-18 (E2) - D6-4 (E2)
H73-15 (THB) - D6-1 (THB)
H73-12 (VC) or D6-2 (VC5) - Body ground
Always
10 kΩ or higher
H73-18 (E2) or D6-4 (E2) - Body ground
H73-15 (THB) or D6-1 (THB) - Body ground
Table 3. Result Result
Proceed to
OK
for LHD
A
for RHD
B
NG
C
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BATTERY CURRENT SENSOR)