Checking Program - Vacuum Circuit QWS
The following test steps describe the checking of the vacuum circuit of the quick warming - up system. In these test steps is assumed that the electrical circuit of the quick warming - up system is in order. See section 8.2.2 for check of electrical circuit.
| Checking Program - Vacuum Circuit QWS | ||
|---|---|---|
| Test | Work Order Description | Nominal Value |
| T01 | Check: Vehicle Configuration | |
| · Is the following information correct for the actual vehicle? | Monterey | |
| Yes: T12 | No: T02 | |
| T01 | Check: Vacuum Circuit VSV1 | |
| · Ignition OFF |
· Disconnect wiring harness plug from:
Ambient temperature switch
· Connect fused jumper wire to:
Ambient temperature switch
Wiring harness plug terminal 1
Ambient temperature switch
Wiring harness plug terminal 2
· Disconnect wiring harness plug from:
Coolant temperature switch
· Connect fused jumper wire to:
Coolant temperature switch
Wiring harness plug terminal 1
Coolant temperature switch
Wiring harness plug terminal 2
· Engine running at idle speed
· All consumers turned off
| · QWS switch depressed (QWS activated) | Both intake throttle valve and exhaust throttle valve close smoothly | |
|---|---|---|
| Yes: T03 | No: T08 | |
| T03 | Check: Vacuum Circuit FICD | |
| · Engine running at idle speed |
· All consumers turned off
| · QWS switch depressed (QWS activated) | Fast Idle Control Device activated (engine speed increases) | |
|---|---|---|
| Yes: T04 | No: E01 | |
| T04 | Check: Vacuum Circuit VSV2 | |
| · Engine running at idle speed |
· All consumers turned off
· QWS switch depressed (QWS activated)
| · Accelerator pedal depressed for a few millimetres | Exhaust throttle valve is opened halfway | |
|---|---|---|
| Yes: T05 | No: E02 | |
| T05 | Check: Vacuum Circuit VSV1 | |
| · Engine running at idle speed |
· All consumers turned off
| · QWS switch released (QWS deactivated) | Both intake throttle valve and exhaust throttle valve open smoothly (QWS is cancelled) | |
|---|---|---|
| Yes: - | No: T06 | |
| T06 | Check: Vacuum Circuit VSV1 | |
| · Engine running at idle speed |
· All consumers turned off
| · QWS switch released (QWS deactivated) | Both intake throttle valve and exhaust throttle valve do not open smoothly | |
|---|---|---|
| Yes: E03 | No: T07 | |
| T07 | Check: Vacuum components | |
| · Engine running at idle speed |
· All consumers turned off
| · QWS switch released (QWS deactivated) | Exhaust throttle valve opens smoothly | |
|---|---|---|
| Yes: E04 | No: E05 | |
| T08 | Check: Vacuum Circuit VSV1 | |
| · Engine running at idle speed |
· All consumers turned off
| · QWS switch depressed (QWS activated) | Both intake throttle valve and exhaust throttle valve do not close smoothly | |
|---|---|---|
| Yes: T09 | No: T11 | |
| T09 | Check: Vacuum Circuit VSV1 | |
| · Disconnect vacuum hose from port Z of VSV1 |
· Apply vacuum with vacuum pump to hose:
| VSV1 port Z | Vacuum remains | |
|---|---|---|
| Yes: E06 | No: T10 | |
| T10 | Check: Vacuum Circuit VSV1 | |
| · Disconnect and plug vacuum hose from port S of VSV2 |
· Apply vacuum with vacuum pump to hose:
VSV1 port Z
· Disconnect and plug each of the following hoses consecutively and repeat the measurement each time:
Vacuum Regulating Valve port S
Vacuum Control Valve port Z
One way valve port coloured side
| Vacuum remains | Vacuum remains | |
|---|---|---|
| Yes: E07 | No: E08 | |
| T11 | Check: Vacuum Components | |
| · Engine running at idle speed |
· All consumers turned off
| · QWS switch depressed (QWS activated) | Exhaust throttle valve closes smoothly | |
|---|---|---|
| Yes: E09 | No: E10 | |
| T12 | Check: Vacuum Circuit VSV1 | |
| · Ignition OFF |
· Disconnect wiring harness plug from:
Ambient temperature switch
· Connect fused jumper wire to:
Ambient temperature switch
Wiring harness plug terminal 1
Ambient temperature switch
Wiring harness plug terminal 2
· Disconnect wiring harness plug from:
Coolant temperature switch
· Connect fused jumper wire to:
Coolant temperature switch
Wiring harness plug terminal 1
Coolant temperature switch
Wiring harness plug terminal 2
· Engine running at idle speed
· All consumers turned off
| · QWS switch depressed (QWS activated) | Both intake throttle valve and exhaust throttle valve close smoothly | |
|---|---|---|
| Yes: ^T13 | No: T17 | |
| T13 | Check: Vacuum Circuit FICD | |
| · Engine running at idle speed |
· All consumers turned off
| · QWS switch depressed (QWS activated) | Fast Idle Control Device activated (engine speed increases) | |
|---|---|---|
| Yes: T14 | No: E11 | |
| T14 | Check: Vacuum Circuit VSV1 | |
| · Engine running at idle speed |
· All consumers turned off
| · QWS switch released (QWS deactivated) | Both intake throttle valve and exhaust throttle valve open smoothly (QWS is cancelled) | |
|---|---|---|
| Yes: - | No: T15 | |
| T15 | Check: Vacuum Circuit VSV1 | |
| · Engine running at idle speed |
· All consumers turned off
| · QWS switch released (QWS deactivated) | Both intake throttle valve and exhaust throttle valve do not open smoothly | |
|---|---|---|
| Yes: E12 | No: T16 | |
| T16 | Check: Vacuum Components | |
| · Engine running at idle speed |
· All consumers turned off
| · QWS switch released (QWS deactivated) | Exhaust throttle valve opens smoothly | |
|---|---|---|
| Yes: E13 | No: E14 | |
| T17 | Check: Vacuum Circuit VSV1 | |
| · Engine running at idle speed |
· All consumers turned off
| · QWS switch depressed (QWS activated) | Both intake throttle valve and exhaust throttle valve do not close smoothly | |
|---|---|---|
| Yes: T18 | No: T20 | |
| T18 | Check: Vacuum Circuit VSV1 | |
| · Disconnect vacuum hose from port Z of VSV1 |
· Apply vacuum with vacuum pump to hose:
| VSV1 port Z | Vacuum remains | |
|---|---|---|
| Yes: E15 | No: T19 | |
| T19 | Check: Vacuum Circuit VSV1 | |
| · Disconnect and plug vacuum hose from port Z of the Vacuum Control Valve |
· Apply vacuum with vacuum pump to hose:
VSV1 port Z
· Disconnect and plug each of the following hoses consecutively and repeat the measurement each time:
| One way valve port coloured side | Vacuum remains | |
|---|---|---|
| Yes: E16 | No: E17 | |
| T20 | Check: Vacuum Components | |
| · Engine running at idle speed |
· All consumers turned off
| · QWS switch depressed (QWS activated) | Exhaust throttle valve closes smoothly | |
|---|---|---|
| Yes: E18 | No: E19 | |
| Checking Program - Vacuum Circuit QWS | ||
| Result | Cause of fault | |
| E01 | · Defective component: |
VSV - FICD
or
FICD Actuator
or
· FICD Actuator obstructed
or
· Vacuum hose leaking or blocked between:
VSV - FICD
| FICD Actuator | |
|---|---|
| E02 | · Defective component: |
VSV2
or
Vacuum Regulating Valve
or
· Vacuum hose leaking or blocked between:
VSV2
Vacuum Regulating Valve
or
· Vacuum hose blocked between:
VSV1
| Vacuum Regulating Valve | |
|---|---|
| E03 | · Defective component: |
VSV1
or
| · Outside air connection of VSV1 blocked | |
|---|---|
| E04 | · Defective component: |
Vacuum Regulating Valve
or
Delay Valve
or
Intake Throttle Valve Actuator
or
| · Intake Throttle Valve mechanism is obstructed | |
|---|---|
| E05 | · Defective component: |
Delay Valve
or
Exhaust Throttle Valve Actuator
or
| · Exhaust Throttle Valve mechanism is obstructed | |
|---|---|
| E06 | · Defective component: |
VSV1
or
· Vacuum hose leaking or blocked between:
Vacuum Pump
| VSV1 | |
|---|---|
| E07 | · If the nominal value is reached during one of the measurements the component that has been disconnected immediately before that measurement is defective |
| E08 | · Vacuum hose leaking between: |
VSV1
VSV2
Vacuum Regulating Valve
Vacuum Control Valve
| & Delay Valve | |
|---|---|
| E09 | · Defective component: |
Vacuum Control Valve
or
Intake Throttle Valve Actuator
or
Delay Valve
or
· Intake Throttle Valve mechanism is obstructed
or
· Vacuum hose blocked between:
VSV1
Vacuum Regulating Valve
or
Vacuum Regulating Valve
| Intake throttle valve Actuator | |
|---|---|
| E10 | · Defective component: |
VSV2
or
Exhaust Throttle Valve Actuator
or
Delay Valve
or
· Exhaust Throttle Valve mechanism is obstructed
or
· Vacuum blocked between:
VSV1
VSV2
or
VSV2
| Exhaust Throttle Valve Actuator | |
|---|---|
| E11 | · Defective component: |
VSV - FICD
or
FICD Actuator
or
· FICD Actuator mechanism is obstructed
or
· Vacuum hose leaking or blocked between:
VSV - FICD
| FICD Actuator | |
|---|---|
| E12 | · Defective component: |
VSV1
or
| · Outside air connection of VSV1 is blocked | |
|---|---|
| E13 | · Defective component: |
Vacuum Regulating Valve
or
Delay Valve
or
Intake Throttle Valve Actuator
or
| · Intake Throttle Valve mechanism is obstructed | |
|---|---|
| E14 | · Defective component: |
One way valve
or
Exhaust Throttle Valve Actuator
or
| · Exhaust Throttle Valve mechanism is obstructed | |
|---|---|
| E15 | · Defective component: |
VSV1
or
· Vacuum hose leaking or blocked between:
Vacuum pump
| VSV1 | |
|---|---|
| E16 | · If the nominal value is reached during one of the measurements the component that has been disconnected immediately before hat measurement is defective |
| E17 | · Vacuum hose leaking between: |
VSV1
Vacuum Control Valve
| Delay Valve | |
|---|---|
| E18 | · Defective component: |
Vacuum Control Valve
or
Intake Throttle Valve Actuator
or
· Intake Throttle Valve mechanism is obstructed
or
· Vacuum hose blocked between:
VSV1
Vacuum Control Valve
or
· Vacuum hose leaking or blocked between:
Vacuum Control Valve
| Intake Throttle Valve Actuator | |
|---|---|
| E19 | · Defective component: |
Vacuum Control Valve
or
Exhaust Throttle Valve Actuator
or
· Exhaust Throttle Valve mechanism is obstructed
or
· Vacuum hose blocked between:
VSV1
| Exhaust Throttle Valve Actuator |