Nissan Altima HL32 Hybrid. Manual - part 609
P0A1D-144, P0A1D-145
HBC-185
< COMPONENT DIAGNOSIS >
D
E
F
G
H
I
J
K
L
M
A
B
HBC
N
O
P
P0A1D-144, P0A1D-145
Description
INFOID:0000000004211840
The hybrid vehicle control ECU monitors its internal operation and detects malfunctions.
DTC Logic
INFOID:0000000004211841
DTC DETECTION LOGIC
The hybrid vehicle control ECU performs many diagnostic tests to verify proper operation of internal ECU sys-
tems. In one of these diagnostics, the hybrid vehicle control ECU performs a self-test. If the hybrid vehicle con-
trol ECU detects an internal problem during this self-test, it will conclude that there is an internal malfunction.
The hybrid vehicle control ECU will illuminate the MIL and set a DTC.
Diagnosis Procedure
INFOID:0000000004211842
1.
PRECONDITIONING
• Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with
converter assembly, take safety precautions such as wearing insulated gloves and removing the service
plug grip to prevent electrical shocks. 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.
• Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with
converter assembly.
>> GO TO 2.
2.
REPLACE HYBRID VEHICLE CONTROL ECU
HBC-644, "Removal and Installation"
>> COMPLETED
DTC No.
INF code
Trouble diagnosis name
DTC detecting condition
Possible cause
P0A1D
144
Hybrid Powertrain Control Module ECU internal error
Hybrid vehicle control ECU
145