P0AE7

L110F 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 description for DTC P0AE6-225 P0AE6.

MONITOR DESCRIPTION

The hybrid vehicle control ECU monitors the operation of 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.

WIRING DIAGRAM

Refer to the wiring diagram for DTC 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

(a) Turn the power switch off.

(b) Disconnect the No. 2 battery pack wire connector Removal.

HINT
Turning the power switch on (IG) with the service plug grip removed causes an interlock switch system DTC (P0A0D-350) to be set.

Standard voltage:

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

2. CHECK HARNESS AND CONNECTOR (NO. 2 BATTERY PACK WIRE CONNECTOR - HYBRID VEHICLE CONVERTER)

CAUTION:
Be sure to wear insulated gloves.

(a) Turn the power switch off.

(b) 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.

(c) Disconnect the low voltage connector from the hybrid vehicle converter.

HINT

For the removal and installation procedures related to the low voltage connector of the hybrid vehicle converter, Components.

(d) Connect the 2 floor wires to the luggage room junction block assembly.

(e) Insulate the AMD terminal of the removed wire with insulating tape to prevent a short to body ground.

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

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

HINT
Turning the power switch on (IG) with the service plug grip removed causes an interlock switch system DTC (P0A0D-350) to be set.

Standard voltage:

(h) Turn the power switch off.

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

Standard resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE HYBRID VEHICLE CONVERTER Components

3. CHECK HARNESS AND CONNECTOR

(a) Turn the power switch off.

(b) Disconnect connector A74 from the hybrid vehicle control ECU.

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

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

HINT
Turning the power switch on (IG) with the service plug grip removed causes an interlock switch system DTC (P0A0D-350) to be set.

Standard voltage:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE HYBRID VEHICLE CONTROL ECU Components