DTC P2532-772: Ignition Switch Run Position Circuit High: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   The following DTC is output simultaneously. 

   DTC No.	Relevant Diagnosis
   P2532-772	Ignition Switch Run Position Circuit High

   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 → See step   12 

YES: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Check BUS CHECK.

   Result

   The screen displays the skid control ECU and A/C amplifier.

OK → See step   7 

NG: Go to next step 

1. Remove the ECU IG No. 2 and A/C No. 2 fuses from the instrument panel J/B.
   Fig 1: Identifying ECU IG No. 2 And A/C No. 2 Fuses Location

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Fuse	Tester Connection	Specified Condition
   ECU IG No. 2	1 - 2	Below 1 Ω
   A/C No. 2	1 - 2	Below 1 Ω

3. Install the fuses.

NG → REPLACE FUSES 

OK: Go to next step 

1. Remove the IG1 relay from the instrument panel J/B.
   Fig 2: Identifying IGCT Relay Schematic

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Specified Condition
   3 - 5	Below 1 Ω
   3 - 5	10 kΩ or more (Apply battery voltage between terminals 1 and 2)

3. Install the fuses.

NG → REPLACE RELAY 

OK: Go to next step 

1. Disconnect the A74 skid control ECU connector.
   Fig 3: Identifying A74 Skid Control ECU Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Remove the ECU IG No. 2 fuse from the instrument panel J/B.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Specified Condition
   IG1 (A74-7) - Instrument panel J/B ECU IG No. 2 fuse terminal 2	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the E38 A/C amplifier connector.
   Fig 4: Identifying A/C No. 2 Fuse And E38 A/C Amplifier Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Remove the A/C No. 2 fuse from the instrument panel J/B.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Specified Condition
   IG+ (E38-1) - Instrument panel J/B A/C No. 2 fuse terminal 2	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   14 

1. Turn the power switch off.
   Fig 5: Identifying A61 Hybrid Vehicle Control ECU Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the A61 hybrid vehicle control ECU connector.
3. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Specified Condition
   IGSW (A61-57) - Body ground	Below 1 V

OK → See step   13 

NG: Go to next step 

1. Disconnect the IG2 relay from the engine room R/B.
2. Measure the resistance according to the value(s) in the table below.
   Fig 6: Identifying A/F Relay Schematic

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester Connection	Specified Condition
   3 - 5	Below 1 Ω
   3 - 5	10 kΩ or more (Apply battery voltage between terminals 1 and 2)

NG → REPLACE RELAY 

OK: Go to next step 

1. Turn the power switch off.
   Fig 7: Identifying IG2 Relay Schematic

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the main body ECU connector.
3. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Specified Condition
   Engine room R/B IG2 relay terminal 2 - Body ground	Below 1 V

OK → See step   11 

NG: Go to next step 

1. Disconnect the IG2 relay from the engine room R/B.
   Fig 8: Identifying Main Body ECU Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Specified Condition
   IG2D (E6-11) - Engine room R/B IG2 relay terminal 1	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE MAIN BODY ECU 

1. Turn the power switch off.
   Fig 9: Identifying A61 Hybrid Vehicle Control ECU Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the F1 combination meter connector.
3. Disconnect the A61 hybrid vehicle control ECU connector.
4. Disconnect the E51 steering lock ECU connector.
5. Disconnect the E58 certification ECU connector.
6. Disconnect the A74 skid control ECU connector.
7. Disconnect the E38 A/C amplifier connector.
8. Disconnect the T10 or O4 occupant classification ECU connector.
9. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Specified Condition
   IGSW (A61-57) - Body ground	Below 1 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Check for intermittent problems. Refer to CHECK FOR INTERMITTENT PROBLEMS .

NG → REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

OK → See step   13