P0A1D-569

P112 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P0A1D-568: Hybrid Powertrain Control Module

DTC P0A1D-568 - Hybrid Powertrain Control Module

DTC P0A1D-569 - Hybrid Powertrain Control Module

DESCRIPTION

The HV control ECU performs self-checks to detect an internal operating malfunction in the ECU.






MONITOR DESCRIPTION

The HV control ECU performs diagnostic monitoring to verify proper operation of internal and external ECU systems. In this diagnostics monitor, the HV control ECU checks the REF signal from the motor main ECU for errors.
If the HV control ECU detects an error in the REF signal, it will conclude that there is a malfunction in the motor main CPU, the REF signal or the HV control ECU. The HV control ECU illuminates the MIL and sets a DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





COMPONENT OPERATING RANGE





WIRING DIAGRAM













INSPECTION PROCEDURE
HINT: When measuring insulation resistance using a megohmmeter, set the megohmmeter to 500 V.

PROCEDURE

1. READ OUTPUT DTC (HV ECU)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch ON (IG).
(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(d) Check if DTCs are output.
Result:
DTC P0A0F (INF 243), P0A40 (INF 500) or P0A41 (INF 245) for the motor resolver is output
YES -- GO TO RELEVANT DTC CHART
NO -- Continue to next step.

2. CHECK HYBRID VEHICLE CONTROL ECU (LOOSENESS AND POOR CONTACT)




(a) Check the connection condition of all the connectors at the HV control ECU.
OK:
Connectors have been connected securely and there is no poor connection.
NG -- CONNECT SECURELY
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - MOTOR RESOLVER)




(a) Disconnect the H17 HV control ECU connector.




(b) Disconnect the M9 motor resolver connector.
(c) Turn the power switch ON (IG).
(d) Measure the voltage between the terminals of the HV control ECU connector and body ground.
Standard voltage:





(e) Turn the power switch OFF.
(f) Measure the resistance between the wire harness side connectors.
Standard resistance (Check for open):






Standard resistance (Check for short)





(g) Reconnect the motor resolver connector.
(h) Reconnect the HV control ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. INSPECT MOTOR RESOLVER
(a) Disconnect the M9 motor resolver connector.




(b) Measure the resistance between the terminals of the motor resolver.
Standard resistance:





(c) Using a megohmmeter set to 500 V, measure the insulation resistance between the terminals of the motor resolver.
NOTE: Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

Standard resistance:






NG -- REPLACE HYBRID VEHICLE MOTOR ASSEMBLY
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - GENERATOR RESOLVER)




(a) Disconnect the H17 HV control ECU connector.




(b) Disconnect the M5 generator resolver connector.
(c) Turn the power switch ON (IG).
(d) Measure the voltage between the terminals of the HV control ECU connector and body ground.
Standard voltage:





(e) Turn the power switch OFF.
(f) Measure the resistance between the wire harness side connectors.
Standard resistance (Check for open):





Standard resistance (Check for short)





(g) Reconnect the generator resolver connector.
(h) Reconnect the HV control ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

6. INSPECT GENERATOR RESOLVER
(a) Disconnect the M5 generator resolver connector.




(b) Measure the resistance between the terminals of the generator resolver.
Standard resistance:





(c) Using a megohmmeter set to 500 V, measure the insulation resistance between the terminals of the generator resolver.
NOTE: Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

Standard resistance:






NG -- REPLACE HYBRID VEHICLE GENERATOR ASSEMBLY
OK -- REPLACE HYBRID VEHICLE CONTROL ECU