Description
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for several seconds after the ignition switch is turned ON to improve engine start ability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows that the engine is rotating, and causes the pump to operate. If the engine speed signal is not received when the ignition switch is ON, the engine stalls. The ECM stops pump operation and prevents battery discharging, thereby improving safety. The ECM does not directly drive the fuel pump. It controls the ON/OFF fuel pump relay, which in turn controls the fuel pump.
Component Function Check
1.CHECK FUEL PUMP FUNCTION
: Vehicle front (Illustration
shows
the view with intake air duct removed)
Fuel pressure pulsation should be felt on the fuel feed hose for 1 second after ignition switch is turned ON.
Diagnosis Procedure
1.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I
2.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II
Check the voltage between IPDM E/R harness connector and ground.
3.DETECT MALFUNCTIONING PART
Check the following.
4.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-III
5.DETECT MALFUNCTIONING PART
Check the following.
6.CHECK FUEL PUMP GROUND CIRCUIT
7.CHECK FUEL PUMP
8.CHECK INTERMITTENT INCIDENT
Component Inspection
1.CHECK FUEL PUMP
Chassis and body maintenance
IN-CABIN MICROFILTER
IN-CABIN MICROFILTER : Removal and Installation
REMOVAL
Disengage the filter cover tab (1) by pushing up and pull out to
remove the filter cover.
Remove the in-cabin microfilter from the blower unit.
INSTALLATION
Installation is in the reverse order of removal ...
Vacuum lines
Inspection
VISUAL INSPECTION
Check for improper assembly, damage and deterioration. Replace as necessary.
CHECK VALVE INSPECTION
Airtightness Inspection
Use a suitable tool to check the built-in check valve. Replace the
vacuum hose with the built-in check valve as an assembly if the vacuu ...
Washer switch
Description
Washer switch is integrated with combination switch (wiper and washer
switch).
Combination switch (wiper and washer switch) supplies ground and fuse #
38 from the IPEM E/R suppliespower for the front washer motor to
operate.
Component Inspection
1. CHECK WASHER SWITC ...