VERACRUZ(EN) >2009 > G 3.8 DOHC > Automatic Transaxle System > Automatic Transaxle System > Troubleshooting>P0882 Battery Voltage Low Supply  
Component Location

General Description
TCU check the Battery voltage, in order to maintain optimum condition of each sensors and solenoid-valve.
DTC Description
TCU set this code, when input lower voltage than specified value.
DTC Detecting Condition
Item
 Detecting Condition
 Possible cause
DTC Strategy
•
Check the voltage range
•
Battery
•
Alternator
•
TCU
•
Wiring harness
Enable Conditions
•
IG "ON"
•
Input speed > 800rpm
Threshold Value
•
Battery voltage > 9V
Diagnostic Time
•
more than 20 times × more than1 sec
Fail Safe
•
Self learning control is inhibited
•
Adaptive control is inhibited

Schematic Diagram

Monitor Scantool Data
1.
Connect scantool to data link connector(DLC).
2.
Engine "ON".
3.
Monitor the "A/T RELAY VOLTAGE" parameter on the scan tool.
Specification : Battery voltage (Approx. 10~14V)

4.
Is "A/T RELAY VOLT" within specification?

 ▶ Go to "IG Power inspection" procedure.

 ▶ Repair "Fuse and Battery and relation part" as necessary and Go to "Verification of Vehicle Repair" procedure.

1. IG Power Inspection
1.
Engine "OFF" IG KEY "ON".
2.
Remove the TCU.
3.
Measure the voltage between terminal of "IG power" and chassis ground.
Specification : Battery voltage (Approx. 10~14V)
4.
Is "VOLTAGE" within specification?

 ▶ Go to "IG ground inspection" procedure.

 ▶ Repair "Fuse and Battery and relation part" as necessary and Go to "Verification of Vehicle Repair" procedure.

IG Ground Inspection
1.
Engine "OFF" IG KEY "ON".
2.
Remove the TCU.
3.
Perform the continuity test between "IG power" terminal and chassis ground.
Specification : Not continuity
4.
Is resistance within specifications?

 ▶ Go to "Battery power Inspection" procedure.

 ▶ Repair "Fuse and Battery and relation part" as necessary and Go to "Verification of Vehicle Repair" procedure.

2. Battery Power Inspection
1.
Engine "OFF" IG KEY "ON".
2.
Remove the TCU.
3.
Measure the voltage between Battery power(B+) terminal of wiring harness and ground terminal.
Specification : Battery voltage (Approx. 10~14V)
4.
Is "VOLTAGE " within specification?

 ▶ Go to "Battery ground inspection1" procedure.

 ▶ Repair "Fuse and Battery and relation part" as necessary and Go to "Verification of Vehicle Repair" procedure.

Battery Ground Inspection 1
1.
Engine "OFF" IG KEY "ON".
2.
Remove the TCU.
3.
Measure the voltage between Battery power(B+) terminal of wiring harness and chassis ground.
Specification : Battery voltage (Approx. 10~14V)
4.
Is "VOLTAGE" within specification?

 ▶ Go to "Battery ground inspection 2" procedure.

 ▶ Repair "Fuse and Battery and relation part" as necessary and Go to "Verification of Vehicle Repair" procedure.

Battery Ground Inspection 2
1.
Engine "OFF" IG KEY "ON".
2.
Remove the TCU.
3.
Perform the continuity test between "Ground" terminal of wiring harness side and chassis ground.
Specification : Continuity
4.
Is resistance within specifications?

 ▶ Fault is intermittent caused by poor contact in the sensor's and/or TCM(PCM)'s connector or was repaired and TCM(PCM) memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.

 ▶ Repair "Fuse and Battery and relation part" as necessary and Go to "Verification of Vehicle Repair" procedure.

Verification of Vehicle Repair
After a repair, it is essential to verify that the fault has been corrected.
1.
Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode
2.
Using a scantool, Clear DTC.
3.
Operate the vehicle within DTC Enable conditions in General information.
4.
Are you DTCs present?

 ▶ Go to the applicable troubleshooting procedure.

 ▶ System performing to specification at this time.