TOYOTA ECHO 1.3L (2NZ-FE Engine) 1999-04 Engine & Transmission Management System TOYOTA ECHO 1.5L (1NZ-FE Engine) 1999-04 Engine & Transmission Management System Index ABS ECM Fuel Pump Relay Air Conditioner Amplifier Fuse Locations Air Conditioner Single Pressure Switch Idle Air Control Valve Automatic Transmission Idle Speed (Base) Auto Trans Fluid Temperature Sensor 6 Ignition Coils Auto Trans Inhibitor Switch Ignition System Auto Trans Range Switch Ignition Timing (Base) Auto Trans Solenoids Intake Air Temperature Sensor Auto Trans Turbine Speed Sensor Kickdown Switch (If Fitted) Brake Lamp Switch 7 Knock Sensor 1 Camshaft Position Sensor Main (EFI) Relay 2 Camshaft Timing Oil Control Valve 8 Mass Air Flow Meter Canister Purge Solenoid Overdrive Off Lamp Check Engine Lamp Overdrive Off Switch 3 Crankshaft Position Sensor Overview Diagnostic Connector Oxygen Sensor 4 Engine Coolant Temperature Sensor PCM Engine Coolant Temperature Switch PCM Voltage Table Engine Cooling Fan 9 Power Steering Pressure Sensor Engine Cooling Fan Relays Power Steering Test Connector Engine Cooling Fan Resistor - Low Security Indicator LED Fault Codes SRS ECM Fault Code Erasure Starter Relay Fault Code Extraction Throttle Body Fault Code Table 10 Throttle Position Sensor Firing Order Transponder Key Amplifier 5 Fuel Injectors Unlock Warning Switch Fuel Pressure Variable Valve Timing System Fuel Pressure Regulator Vehicle Speed Sensor Fuel Pump Assembly Wiring Diagram 1nzfe TOYOTA ECHO 1.3L (2NZ-FE Engine) 1999-04 Engine & Transmission Management System TOYOTA ECHO 1.5L (1NZ-FE Engine) 1999-04 Engine & Transmission Management System ABS ECM The ABS ECM is located with the ABS unit in the engine compartment. Modules communicate with each other through serial data. To Test Voltage: See PCM Pin #B15 and PCM Pin #D16. Air Conditioner Amplifier The Air Conditioner Amplifier is located under the dash behind the glove compartment. The PCM communicates with the A/C Amplifier to control operation of the air conditioner. To Test Voltage: See PCM Pin #D10 and D21. Air Conditioner Single Pressure Switch The Air Conditioner Single Pressure Switch is located in the air conditioner pressure lines. Should the air conditioner pressure exceed specifications, this switch closes to ground. This brings the Engine Cooling Fan onto high speed. Automatic Transmission The 4 speed Automatic Transmission is PCM controlled. The PCM controls the transmission through: Automatic Transmission Fluid Temperature Sensor. Automatic Transmission Solenoids. Automatic Transmission Turbine Speed Sensor. Automatic Transmission Fluid Temperature (TFT) Sensor The TFT Sensor is located within the Automatic Transmission. The PCM monitors this sensor to determine transmission fluid temperature. To Test Voltage: See PCM Pin #B9 and PCM Pin #C10. Automatic Transmission Inhibitor Switch The Inhibitor Switch is incorporated with the Automatic Transmission Range Switch. To Test Voltage: See PCM Pin #D11 and D22. Automatic Transmission Range Switch The Automatic Transmission Range Switch incorporates the Inhibitor Switch. The PCM monitors this switch for driver demand. It monitors Park and Neutral positions through the Inhibitor Switch. If it sees no voltage on any of the monitored lines, it assumes Drive is selected. To Test Voltage: See PCM Pin #A5 and PCM Pin #D11, D17, D18, D19 and D22. TOYOTA ECHO 1.3L (2NZ-FE Engine) 1999-04 Engine & Transmission Management System TOYOTA ECHO 1.5L (1NZ-FE Engine) 1999-04 Engine & Transmission Management System Automatic Transmission Solenoids The Automatic Transmission Solenoids are located within the Automatic Transmission. They are: • Shift Solenoid #1 (cid:127) Shift Solenoid #2 (cid:127) Solenoid ST (cid:127) Line Pressure Solenoid (cid:127) Lock Up Solenoid To Test Voltage: See PCM Pin #C1, C2, C3, C6, C7 and C9. Automatic Transmission Turbine Speed Sensor The Automatic Transmission Turbine Speed Sensor is located in the Automatic Transmission. The PCM monitors this sensor for transmission speed. To Test Voltage: See PCM Pin #C5 and C11. Brake Lamp Switch The Brake Lamp Switch is located at the brake pedal cluster. The PCM monitors this switch to determine when the brakes are applied. To Test Voltage: See PCM Pin #A6. 1 Camshaft Position Sensor The Camshaft Position Sensor is located at the left end of the camshaft. It incorporates a single tooth plate on the camshaft and a pickup coil. The PCM monitors this sensor for engine position. It also uses this signal to monitor operation of the Camshaft Timing Oil Control Valve. To Test Voltage: See PCM Pin #A16 and A18. 2 Camshaft Timing Oil Control Valve The Camshaft Timing Oil Control Valve is located at the right end of the camshaft. The PCM actuates this valve to vary the opening of the intake valves. To Test Voltage: See PCM Pin #A10 and A23. To Test: With the engine idling at operating temperature disconnect the Oil Control Valve connector. Apply battery voltage to the valve. If the engine runs rough or stalls, the valve is operating. If there is no change, the valve is faulty and should be replaced. TOYOTA ECHO 1.3L (2NZ-FE Engine) 1999-04 Engine & Transmission Management System TOYOTA ECHO 1.5L (1NZ-FE Engine) 1999-04 Engine & Transmission Management System Canister Purge Solenoid The Canister Purge Solenoid is located at the left rear of the cylinder head. The PCM actuates this solenoid to purge the carbon canister of gaseous hydrocarbons. It will do this when it has the least effect on driveability. To Test Voltage: See PCM Pin #A9. Check Engine Lamp The Check Engine Lamp is located in the instrument panel. Should the PCM detect a fault it will illuminate this lamp. Manual 2 digit Fault Codes can also be read through this lamp. To Test Voltage: See PCM Pin #D5. 3 Crankshaft Position Sensor The Crankshaft Position Sensor is located at the right end of the crankshaft. It incorporates a signal plate with 34 teeth and a pick up coil. The PCM monitors this sensor for crankshaft angle and engine speed. To Test Voltage: See PCM Pin #A16 and A17. Diagnostic Connector The 16 pin OBDII type Diagnostic Connector is located under the drivers side dash. To Test Voltage: See PCM Pin #B15 and PCM Pin #D16. 4 Engine Coolant Temperature Sensor The Engine Coolant Temperature Sensor is located at the right end of the cylinder head. It is to the rear of the Camshaft Position Sensor. The PCM monitors this sensor to determine engine coolant temperature. To Test Voltage: See PCM Pin #B4 and B9. TOYOTA ECHO 1.3L (2NZ-FE Engine) 1999-04 Engine & Transmission Management System TOYOTA ECHO 1.5L (1NZ-FE Engine) 1999-04 Engine & Transmission Management System Engine Coolant Temperature Switch (Models with A/C) The Engine Coolant Temperature Switch is located at the radiator. When the engine coolant temperature exceeds specifications, this switch closes. This brings the Engine Cooling Fan on to high speed. Engine Cooling Fan The Engine Cooling Fan is located at the radiator. It is actuated by Engine Cooling Fan Relay #1. Operation: In models without air conditioning; The fan is actuated on a single speed by the PCM. To Test Voltage: See PCM Pin #A8. In models with air conditioning: The fan is actuated on low speed by the Air Conditioner Amplifier. It is actuated on high speed by: PCM. Air Conditioner Single Pressure Switch or Engine Coolant Temperature Switch. To Test Voltage: See PCM Pin #A8, and PCM Pin #D10 and D21. Engine Cooling Fan Relays The Engine Cooling Fan Relays are in the main fuse relay box in the engine compartment. Models without air conditioning use Fan Relay #1 only. Models with air conditioning use both Fan Relay #1 and Fan Relay #2. (See Engine Cooling Fan) To Test Voltage: See PCM Pin #A8. Engine Cooling Fan Resistor - Low Speed (A/C) The Engine Cooling Fan Low Speed Resistor is located behind the left headlamp. It is used through Engine Cooling Fan Relay #2 to operate the fan on low speed. Firing Order 1, 3, 4, 2. TOYOTA ECHO 1.3L (2NZ-FE Engine) 1999-04 Engine & Transmission Management System TOYOTA ECHO 1.5L (1NZ-FE Engine) 1999-04 Engine & Transmission Management System 5 Fuel Injectors The Fuel Injectors are located in the intake ports of the cylinder head. To Test Voltage: See PCM Pin #A11, A12, A24 and A25. To Test Resistance @ 20°C: Disconnect connectors and test individually - should be 13.4 to 14.2 Ohms. Fuel Pressure Engine idling 304 to 343 kPa. Fuel Pressure Regulator The Fuel Pressure Regulator is incorporated within the Fuel Pump Assembly in the fuel tank. This negates the need for a fuel return line and keeps the fuel in the tank cooler. Fuel Pump Assembly The Fuel Pump Assembly is located in the fuel tank. It incorporates the Fuel Pressure Regulator, Fuel Pump and the Fuel Gauge Sender. Fuel Pump Relay The Fuel Pump Relay is in the instrument panel junction box in the passenger compartment. To Test Voltage: See PCM Pin #D14. Fuse Locations The following Fuses are in the Fusible Link Block in the engine compartment. Fuse Alt - 100 Amp. Fuse Main - 60 Amp. The following Fuses are in the main fuse relay box in the engine compartment. Fuse AM2 - 15 Amp. Fuse EFI - 15 Amp. Fuse RDI - 30 Amp Fuse ST - 30 Amp. The following Fuses are in the instrument panel junction box in the passenger compartment. Fuse AM1 - 50 Amp. Fuse ECU-IG - 7.5 Amp. Fuse Gauge - 10 Amp. Fuse OBD - 7.5 Amp. Fuse Stop - 10 Amp. TOYOTA ECHO 1.3L (2NZ-FE Engine) 1999-04 Engine & Transmission Management System TOYOTA ECHO 1.5L (1NZ-FE Engine) 1999-04 Engine & Transmission Management System Idle Air Control Valve The rotary solenoid type Idle Air Control Valve is located at the Throttle Body. The PCM actuates this valve to alter the air bypassing the throttle plate. To Test Voltage: See PCM Pin #A2. Idle Speed (Base) Idle speed is PCM controlled. It can be checked as follows: Ensure that: Engine is @ operating temperature All accessories including air conditioner are off. Transmission is in neutral or park. Connect suitable tachometer to terminal 9 of the Diagnostic Connector. Start engine and check idle speed is as follows: 100 to 700 RPM (Manual) 650 to 750 RPM (Auto) 6 Ignition Coils There are 4 Ignition Coils located at the spark plugs. Each coil incorporates its own Igniter. To Test Voltage: See PCM Pin #A3, A19, A20, A21 and A22. Ignition System The Ignition System used is an Electronic Distributorless Ignition System. It has a single Ignition Coil / Igniter for each spark plug. The PCM determines ignition timing and outputs a signal for each cylinder (IGT). Simultaneously, the Igniter also sends a confirmation signal back to the PCM (IGF). This acts as a failsafe for misfire detection. Ignition Timing (Base) Ignition timing is ECM controlled and cannot be adjusted. It can be checked as follows: Ensure that: Engine is @ operating temperature All accessories including air conditioner are off. Transmission is in neutral or park. Bridge terminal 13 of the Diagnostic Connector to ground. Connect timing light to cylinder #1. Start engine and check ignition timing is 8° to 12° BTDC. TOYOTA ECHO 1.3L (2NZ-FE Engine) 1999-04 Engine & Transmission Management System TOYOTA ECHO 1.5L (1NZ-FE Engine) 1999-04 Engine & Transmission Management System Intake Air Temperature Sensor The Intake Air Temperature Sensor is incorporated within the Mass Air Flow Meter. The PCM monitors this sensor to determine the temperature of the incoming air. To Test Voltage: See PCM Pin #B3 and B9. Kickdown Switch (If Fitted) These vehicles may be fitted with a Kickdown Switch. To Test Voltage: See PCM Pin #C12. 7 Knock Sensor The piezoelectric Knock Sensor is located on the front of the engine block. When the PCM detects a knocking condition it retards the ignition timing to alleviate the knock. To Test Voltage: See PCM Pin #B13. Main (EFI) Relay The Main (EFI) Relay is located in the main fuse relay box in the engine compartment. To Test Voltage: See PCM Pin #D12. 8 Mass Air Flow Meter The hot wire Mass Air Flow Meter is located in the intake duct. It incorporates the Intake Air Temperature Sensor. To Test Voltage: See PCM Pin #B2, B3, B9 and B10. Overdrive Off Lamp The Overdrive Off Lamp is located in the instrument panel. It is actuated by the Overdrive Off Switch. The PCM monitors this lamp to determine when the Overdrive Off Switch has been activated. To Test Voltage: See PCM Pin #C4. Overdrive Off Switch The Overdrive Off Switch is located in the gear selector lever. The driver activates this switch to prevent actuation of the overdrive gear. To Test Voltage: See PCM Pin #C4. TOYOTA ECHO 1.3L (2NZ-FE Engine) 1999-04 Engine & Transmission Management System TOYOTA ECHO 1.5L (1NZ-FE Engine) 1999-04 Engine & Transmission Management System Overview These vehicles are fitted with the 1.3 Litre 2NZ-FE and the 1.5 Litre 1NZ-FE VVTi engines. The system manages both engine and automatic transmission control. Battery voltage as well as air conditioning and engine cooling fans are PCM controlled. Air Mass calculations are by a hot wire Mass Air Flow Meter. Close monitoring of stoichiometric air fuel ratio is through a heated Oxygen Sensor. Exhaust gases are cleaned using a 3 way catalytic converter. Oxygen Sensor The heated zirconium dioxide Oxygen Sensor is in the exhaust before the catalytic converter. To Test Voltage: See PCM Pin #B6 and B8. 9 Power Steering Oil Pressure Sensor The Power Steering Oil Pressure Sensor is located at the power steering pump. The PCM monitors this sensor for power steering load. It will adjust idle speed to the most appropriate dependant upon this signal. To Test Voltage: See PCM Pin #B1, B9 and B12. Power Steering Pressure Test Connector The Power Steering Pressure Test Connector is located under the passenger side dash. To Test Voltage: See PCM Pin #A7. Security Indicator LED The Security Indicator LED is located in the instrument panel. It indicates the state of the security system. To Test Voltage: See PCM Pin #D6. SRS ECM The SRS ECM is located behind the centre console. Modules communicate with each other through serial data. To Test Voltage: See PCM Pin #B15 and PCM Pin #D16. Starter Relay The Starter Relay is located in the main fuse relay box in the engine compartment.