P2532

P311 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P2532-772: Ignition Switch Run Position Circuit High

DTC P2532-772 - Ignition Switch Run Position Circuit High

DESCRIPTION

If a hybrid vehicle cannot be turned off, it will not be possible to determine this by listening or looking (high voltage cannot be shut off). In this case, checking for DTCs can help to determine the state of the vehicle.
When the hybrid vehicle control ECU detects that the vehicle cannot be turned off, the ECU will set this DTC. This DTC is set based on communication between the hybrid vehicle control ECU and ECUs that are activated by the IG1 relay and IG2 relay.

HINT: If DTC P2532-772 is detected, it will not be possible to turn the vehicle off.

WIRING DIAGRAM

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 DTC OUTPUT (HV)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.
(d) Check if DTCs are output.
Result:
The following DTC is output simultaneously.

HINT:
- Turning the power switch on (IG) with the service plug grip and inverter cover removed causes interlock switch system DTC P0A0D-350 to be output.
- P2532-772 may be output due to a malfunction which causes the DTCs in the table above to be output. In this case, first troubleshoot the output DTCs in the table above. Then, perform a reproduction test to check that no DTCs are output.

NO -- CHECK FOR INTERMITTENT PROBLEMS
YES -- Continue to next step.
2. CHECK CAN COMMUNICATION SYSTEM (BUS CHECK)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Check BUS CHECK.
Result:
The screen displays the skid control ECU and A/C amplifier.
OK -- CHECK HYBRID VEHICLE CONTROL ECU
NG -- Continue to next step.
3. CHECK FUSES (ECU IG NO. 2, A/C NO. 2)

(a) Remove the ECU IG No. 2 and A/C No. 2 fuses from the instrument panel J/B.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:

(a) Remove the IG1 relay from the instrument panel J/B.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:

(c) Install the fuses.
NG -- REPLACE RELAY
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - ECU IG NO. 1 FUSE)

(a) Disconnect the A74 skid control ECU connector.
(b) Remove the ECU IG No. 2 fuse from the instrument panel J/B.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
6. CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - A/C NO. 2 FUSE)

(a) Disconnect the E38 A/C amplifier connector.
(b) Remove the A/C No. 2 fuse from the instrument panel J/B.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- GO TO CAN COMMUNICATION SYSTEM
7. CHECK HYBRID VEHICLE CONTROL ECU

(a) Turn the power switch off.
(b) Disconnect the A61 hybrid vehicle control ECU connector.
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:

OK -- REPLACE HYBRID VEHICLE CONTROL ECU
NG -- Continue to next step.
8. CHECK RELAY (IG2 RELAY)
(a) Disconnect the IG2 relay from the engine room R/B.

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

NG -- REPLACE RELAY
OK -- Continue to next step.
9. CHECK MAIN BODY ECU

(a) Turn the power switch off.
(b) Connect the main body ECU connector.
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:

OK -- CHECK HARNESS AND CONNECTOR
NG -- Continue to next step.
10. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - IG2 RELAY)
(a) Disconnect the IG2 relay from the engine room R/B.

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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MAIN BODY ECU
11. CHECK HARNESS AND CONNECTOR

(a) Turn the power switch off.
(b) Disconnect the F1 combination meter connector.
(c) Disconnect the A61 hybrid vehicle control ECU connector.
(d) Disconnect the E51 steering lock ECU connector.
(e) Disconnect the E58 certification ECU connector.
(f) Disconnect the A74 skid control ECU connector.
(g) Disconnect the E38 A/C amplifier connector.
(h) Disconnect the T10 or O4 occupant classification ECU connector.
(i) 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.
12. CHECK FOR INTERMITTENT PROBLEMS
(a) Check for intermittent problems Hybrid Control System.
NG -- REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK -- REPLACE HYBRID VEHICLE CONTROL ECU