P0AE7

P311 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P0AE7-224: Hybrid Battery Precharge Contactor Control Circuit High
P0AE7-224 - Hybrid Battery Precharge Contactor Control Circuit High

DESCRIPTION

Refer to the circuit description for DTC P0AE6-225 P0AE6.

MONITOR DESCRIPTION

The hybrid vehicle control ECU monitors the proper operation of the SMRP. If the hybrid vehicle control ECU detects an open or short in the SMRP circuit, the hybrid vehicle control ECU will illuminate the MIL and set a DTC.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

COMPONENT OPERATING RANGE

WIRING DIAGRAM

See the wiring diagram for P0AE6-225 P0AE6.

INSPECTION PROCEDURE

CAUTION:
- 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. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
HINT
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR

CAUTION:
Be sure to wear insulated gloves.

(a) Turn the power switch off and remove the service plug grip Hybrid Control System.

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.

(b) Disconnect the battery pack wire connector Components.

Standard voltage:

NOTICE:
Turning the power switch on (IG) with the battery pack wire connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

NG -- CHECK HARNESS AND CONNECTOR
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONVERTER - BATTERY PACK WIRE CONNECTOR)

CAUTION:
Be sure to wear insulated gloves.

(a) Check that the service plug grip is not installed.

(b) Disconnect the n4 hybrid vehicle converter (DC/DC converter) connector.

(c) Turn the power switch on (IG).

(d) Measure the voltage according to the value(s) in the table below.

Standard voltage:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. CHECK HYBRID VEHICLE CONTROL ECU

(a) Turn the power switch off.

(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:

NG -- REPLACE HYBRID VEHICLE CONTROL ECU Components

OK -- REPLACE HYBRID VEHICLE CONVERTER Components

4. CHECK HARNESS AND CONNECTOR

(a) Disconnect the A61 hybrid vehicle control ECU connector.

(b) Turn the power switch on (IG).

(c) Measure the voltage according to the value(s) in the table below.

Standard voltage: