Up to 08/2009
HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM: P0AD3-123: Hybrid Battery Pack Cooling Fan 3 Control Circuit High
P0AD3-123 - Hybrid Battery Pack Cooling Fan 3 Control Circuit High
DESCRIPTION
- The speed of the battery blower assembly is controlled by the power management control ECU. Battery blower assembly power is supplied from the FCTL terminal of the power management control ECU by the battery blower relay when it is turned on. The power management control ECU sends command signals (S0, S1 and S2) to each battery blower assembly to get the fan speed corresponding to the HV battery temperature. Information of the voltage applied to each battery blower assembly (VM0, VM1 and VM2) is sent to the power management control ECU as a monitor signal via serial communication by the battery smart unit.
WIRING DIAGRAM
INSPECTION PROCEDURE
CAUTION:
- Before inspecting the high-voltage system, take safety precautions to prevent electrical shocks, such as wearing insulated gloves and removing the service plug grip. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals.
HINT
At least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
NOTICE:
After the power switch is turned off, the display and navigation module display (HDD navigation system) records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 60 seconds before disconnecting the cable from the negative (-) battery terminal.
PROCEDURE
1. CHECK DTC OUTPUT (DTC P0AFC-123 IS OUTPUT) P0A7F
B -- GO TO DTC CHART
A -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (VM2 VOLTAGE)
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Check that the service plug grip is not installed.
NOTICE:
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
(c) Remove the battery cover Removal.
(d) Remove the battery smart unit.
HINT
Do not disconnect the battery smart unit connector.
(e) Connect the cable to the negative (-) battery terminal.
(f) Connect the Techstream to the DLC3.
(g) Turn the power switch on (IG) and the Techstream on.
(h) Enter the following menus: Powertrain / Hybrid Control / Active Test / Driving the Battery Cooling Fan.
(i) Select each air volume mode (1 to 6) in the "Driving the Battery Cooling Fan" active test to operate the battery cooling blower assembly.
(j) Measure the voltage according to the value(s) in the table below while the cooling fan is operating.
Standard Voltage:
Text in Illustration
NOTICE:
If the power switch is turned on (IG) with the service plug grip removed, DTC P0A0D-350 for the interlock switch system will be stored. If this DTC is output, clear the DTC using the Techstream Hybrid Battery System.
HINT
Compare the values in each air volume mode (1 to 6).
(k) Install the battery smart unit Installation.
(l) Install the battery cover.
(m) Connect the cable to the negative (-) battery terminal.
NG -- CHECK BATTERY COOLING BLOWER ASSEMBLY (NO. 2)
OK -- Continue to next step.
3. CHECK HV BATTERY ASSEMBLY P0A85
NG -- CHECK HARNESS AND CONNECTOR (BATTERY TEMPERATURE SENSOR)
OK -- Continue to next step.
4. CHECK BATTERY SMART UNIT P0A85
NG -- REPLACE BATTERY SMART UNIT Components
OK -- Continue to next step.
5. CHECK HYBRID BATTERY JUNCTION BLOCK ASSEMBLY P0A85
NG -- CHECK HARNESS AND CONNECTOR (BATTERY SMART UNIT - HYBRID BATTERY JUNCTION BLOCK ASSEMBLY)
OK -- REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY Components
6. CHECK BATTERY COOLING BLOWER ASSEMBLY (NO. 2) P0AD0
B -- REPLACE BATTERY COOLING BLOWER ASSEMBLY (NO. 2) Components
A -- Continue to next step.
7. CHECK HARNESS AND CONNECTOR (BATTERY SMART UNIT - BATTERY COOLING BLOWER ASSEMBLY (NO. 2))
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Check that the service plug grip is not installed.
NOTICE:
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
(c) Remove the battery cover Removal.
(d) Remove the battery smart unit.
HINT
Disconnect only the z29 connector of the battery smart unit.
(e) Disconnect the P50 connector from the battery cooling blower (No. 2).
(f) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
Standard Resistance (Check for Short):
Text in Illustration
(g) Connect the P50 connector to the battery cooling blower (No. 2).
(h) Install the battery smart unit Installation.
(i) Install the battery cover.
(j) Connect the cable to the negative (-) battery terminal.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE BATTERY SMART UNIT Components
8. CHECK HARNESS AND CONNECTOR (BATTERY SMART UNIT - HYBRID BATTERY JUNCTION BLOCK ASSEMBLY) P0A85
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE BATTERY SMART UNIT Components
9. CHECK HARNESS AND CONNECTOR (BATTERY TEMPERATURE SENSOR) P0A85
NG -- REPAIR HARNESS OR CONNECTOR
OK -- REPLACE HV BATTERY ASSEMBLY Components