DTC P24BA: EVAP System Leak Detection Pump Pressure Sensor Circuit Low [11/2021 - ]: Procedure

1. Turn the ignition switch to ON.
2. Using GTS, read the value in [Atmosphere Pressure].

   Powertrain > Engine Control System > Data List 

   Tester Display
   Atmosphere Pressure

   Is the value in [Atmosphere Pressure] 34 kPa (255 mmHg, 10 inHg) or less?

   Result	Proceed to
   Yes	A
   No (Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.) HINT:  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.	B

Result: 

B 

PERFORM SIMULATION TEST 

Result: 

A 

See step  2

1. Turn the ignition switch to OFF.
2. Disconnect the connector from the canister pump module.
3. Turn the ignition switch to ON.
4. Measure the voltage between the canister pump module connector and chassis ground.

   Connector & terminal

   M23-6 - Chassis ground

   Is the voltage 4.5 V or higher?

   Result	Proceed to
   Yes	A
   No (Repair the following item.) Open circuit in harness between ECM connector and the canister pump module connector Poor contact of ECM connector Poor contact of J/C Poor contact of coupling connector	B

Result: 

B 

REPAIR RELATED PARTS 

Result: 

A 

See step  3

1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Measure the resistance between the ECM connector and engine ground.

   Connector & terminal

   A5-62 (PPMP) - Engine ground

   Is the resistance 1 MΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair the short circuit to ground in harness between ECM connector and canister pump module connector.)	B

Result: 

B 

REPAIR HARNESS OR CONNECTOR 

Result: 

A 

See step  4

1. Check for poor contact of canister pump module connector.

   Is there poor contact in the canister pump module connector?

   Result	Proceed to
   Yes (Repair the poor contact in the canister pump module connector.)	A
   No (Replace the canister pump module.)	B

Result: 

A 

REPAIR CONNECTOR 

Result: 

B 

REPLACE CANISTER PUMP MODULE 

Refer to PROCEDURE - Step 5