Diagnosis Procedure
- CHECK GROUND CONNECTION
- Turn ignition switch OFF.
- Check ground connection M95. Refer to Ground Inspection in
"CIRCUIT INSPECTION
".
Is the inspection result normal?
YES: GO TO 2.
NO: Repair or replace ground connection.
- CHECK BRAKE BOOSTER PRESSURE SENSOR POWER SUPPLY CIRCUIT
- Disconnect brake booster pressure sensor harness connector.
- Turn ignition switch ON.
- Check the voltage between brake booster pressure sensor harness connector and ground.
Brake booster pressure sensor Ground Voltage (V) Connector Terminal E48 1 Ground Approx. 5 Is the inspection result normal?
YES: GO TO 9.
NO: GO TO 3.
- CHECK BRAKE BOOSTER PRESSURE SENSOR POWER SUPPLY CIRCUIT-II
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between Brake booster pressure sensor harness connector and ECM harness connector.
Brake booster pressure sensor ECM Continuity Connector Terminal Connector Terminal E48 1 F101 45 Existed Is the inspection result normal?
YES: GO TO 5.
NO: GO TO 4.
- DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F40, E13
- Harness for open between ECM and brake booster pressure sensor
: Repair open circuit.
- CHECK SENSOR POWER SUPPLY CIRCUIT
Check harness for short to power and short to ground, between the following terminals.
ECM Sensor Connector Terminal Name Connector Terminal F101 45 Brake booster pressure sensor E48 1 46 CKP sensor (POS) F2 1 M107 103 APP sensor E112
(Without ICC)6 E116
(With ICC)3 107 EVAP control system pressure sensor B252 3 Refrigerant pressure sensor E77 3 Is the inspection result normal?
YES: GO TO 6.
NO: Repair short to ground or short to power in harness or connectors.
- CHECK COMPONENTS
Check the following.
- Crankshaft position sensor (POS) (Refer to "COMPONENT INSPECTION ".)
- EVAP control system pressure sensor (Refer to "COMPONENT INSPECTION ".)
- Refrigerant pressure sensor (Refer to
"COMPONENT FUNCTION CHECK
".)
Is the inspection result normal?
YES: GO TO 7.
NO: Replace malfunctioning component.
- CHECK APP SENSOR
Refer to "COMPONENT INSPECTION ".
Is the inspection result normal?
YES: GO TO 14.
NO: GO TO 8.
- REPLACE ACCELERATOR PEDAL ASSEMBLY
- Replace accelerator pedal assembly. Refer to "REMOVAL AND INSTALLATION ".
- Go to
"SPECIAL REPAIR REQUIREMENT
".
: INSPECTION END
- CHECK BRAKE BOOSTER PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between brake booster pressure sensor harness connector and ECM harness connector.
Brake booster pressure sensor ECM Continuity Connector Terminal Connector Terminal E48 3 F101 36 Existed - Also check harness for short to ground and power.
Is the inspection result normal?
YES: GO TO 11.
NO: GO TO 10.
- DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F40, E13
- Harness for open or short between brake booster pressure sensor and ECM
: Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK BRAKE BOOSTER PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
- Check the continuity between brake booster pressure sensor harness connector and ECM harness connector.
Brake booster pressure sensor ECM Continuity Connector Terminal Connector Terminal E48 2 F101 39 Existed - Also check harness for short to ground and power.
Is the inspection result normal?
YES: GO TO 13.
NO: GO TO 12.
- Check the continuity between brake booster pressure sensor harness connector and ECM harness connector.
- DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F40, E13
- Harness for open or short between brake booster pressure sensor and ECM
: Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK BRAKE BOOSTER PRESSURE SENSOR
Refer to "COMPONENT INSPECTION ".
Is the inspection result normal?
YES: GO TO 14.
NO: Replace brake booster pressure sensor. Refer to "REMOVAL AND INSTALLATION ".
- CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".
: INSPECTION END