Diagnostic Test
- CHECK PRIMARY SPEED SENSOR POWER CIRCUIT
- Turn ignition switch OFF.
- Disconnect primary speed sensor connector.
- Turn ignition switch ON.
- Check voltage between primary speed sensor harness connector terminal and ground.
+ - Voltage Primary speed sensor Connector Terminal F50 3 Ground 10 - 16 V
Is the inspection result normal?
YES
GO TO STEP 2 .
NO
GO TO STEP 6 .
- CHECK PRIMARY SPEED SENSOR GROUND CIRCUIT
Check continuity between primary speed sensor harness connector terminal and ground.
Primary speed sensor - Continuity Connector Terminal F50 1 Ground Existed Is the inspection result normal?
YES
GO TO STEP 3 .
NO
Repair or replace malfunctioning parts.
- CHECK CIRCUIT BETWEEN PRIMARY SPEED SENSOR AND TCM (PART 1)
- Turn ignition switch OFF.
- Disconnect TCM connector.
- Check continuity between primary speed sensor harness connector terminal and TCM harness connector terminal.
Primary speed sensor TCM Continuity Connector Terminal Connector Terminal F50 2 F44 35 Existed
Is the inspection result normal?
YES
GO TO STEP 4 .
NO
Repair or replace malfunctioning parts.
- CHECK CIRCUIT BETWEEN PRIMARY SPEED SENSOR AND TCM (PART 2)
Check continuity between primary speed sensor harness connector terminal and ground.
Primary speed sensor - Continuity Connector Terminal F50 2 Ground Not existed Is the inspection result normal?
YES
GO TO STEP 5 .
NO
Repair or replace malfunctioning parts.
- CHECK TCM INPUT SIGNALS
- Connect all of disconnected connectors.
- Lift the vehicle.
- Start the engine.
- Check frequency of primary speed sensor.
+ - Condition Frequency
(Approx.)TCM Connector Terminal F44 35 Ground - Selector lever: "L" position
- Vehicle speed: 20 km/h (12 MPH)
1, 100 Hz
Is the inspection result normal?
YES
Check intermittent incident. Refer to INTERMITTENT INCIDENT .
NO
Replace primary speed sensor. REMOVAL AND INSTALLATION .
- CHECK CIRCUIT BETWEEN IPDM E/R AND PRIMARY SPEED SENSOR
- Disconnect IPDM E/R connector.
- Check continuity between IPDM E/R harness connector terminal and primary speed sensor harness connector terminal.
IPDM E/R Primary speed sensor Continuity Connector Terminal Connector Terminal E45 21 F50 3 Existed
Is the check result normal?
YES
GO TO STEP 7 .
NO
Repair or replace malfunctioning parts.
- DETECT MALFUNCTIONING ITEMS
Check the following items:
- Open circuit or short circuit in harness between ignition switch and IPDM E/R. Refer to WIRING DIAGRAM -IGNITION POWER SUPPLY - .
- Short circuit in harness between IPDM E/R harness connector terminal 21 and primary speed sensor harness connector terminal 3.
- 10A fuse (No. 49, IPDM E/R). Refer to IPDM E/R TERMINAL ARRANGEMENT .
- IPDM E/R
Is the check result normal?
YES
Check intermittent incident. Refer to INTERMITTENT INCIDENT .
NO
Repair or replace malfunctioning parts.