SELF-DIAGNOSIS FUNCTION

F-87spec table

CODE NO.26 SOLENOID VALVE (PURGE CONTROL)

STEP	INSPECTION	Result	ACTION
1	Are there any poor connections in solenoid valve circuit?	Yes	Repair or replace connector
1	Are there any poor connections in solenoid valve circuit?	No	Go to next step
2	Is resistance of solenoid valve OK? Resistance: 25 ± 2Ω	Yes	Go to next step
2	Is resistance of solenoid valve OK? Resistance: 25 ± 2Ω	No	Replace solenoid valve (Refer to page F-119)
3	Is there battery voltage at terminal wire (W/R) of solenoid valve circuit?	Yes	Go to next step
3	Is there battery voltage at terminal wire (W/R) of solenoid valve circuit?	No	Check for open circuit in wiring from solenoid valve to main relay
4	Is there continuity between solenoid valve and ECU? Solenoid valve B (Y/R) — ECU 2X	Yes	Go to next step
4	Is there continuity between solenoid valve and ECU? Solenoid valve B (Y/R) — ECU 2X	No	Check for open circuit in wiring from solenoid valve to ECU
5	Is ECU terminal (2X) voltage OK? (Refer to page F-130)	Yes	Replace ECU (Refer to page F-127)
5	Is ECU terminal (2X) voltage OK? (Refer to page F-130)	No	Check for short circuit in wiring from solenoid valve to ECU

INSPECTIONAre there any poor connections in solenoid valve circuit?

ResultYes

ACTIONRepair or replace connector

INSPECTIONAre there any poor connections in solenoid valve circuit?

ResultNo

ACTIONGo to next step

INSPECTIONIs resistance of solenoid valve OK? Resistance: 25 ± 2Ω

ResultYes

ACTIONGo to next step

INSPECTIONIs resistance of solenoid valve OK? Resistance: 25 ± 2Ω

ResultNo

ACTIONReplace solenoid valve (Refer to page F-119)

INSPECTIONIs there battery voltage at terminal wire (W/R) of solenoid valve circuit?

ResultYes

ACTIONGo to next step

INSPECTIONIs there battery voltage at terminal wire (W/R) of solenoid valve circuit?

ResultNo

ACTIONCheck for open circuit in wiring from solenoid valve to main relay

INSPECTIONIs there continuity between solenoid valve and ECU? Solenoid valve B (Y/R) — ECU 2X

ResultYes

ACTIONGo to next step

INSPECTIONIs there continuity between solenoid valve and ECU? Solenoid valve B (Y/R) — ECU 2X

ResultNo

ACTIONCheck for open circuit in wiring from solenoid valve to ECU

INSPECTIONIs ECU terminal (2X) voltage OK? (Refer to page F-130)

ResultYes

ACTIONReplace ECU (Refer to page F-127)

INSPECTIONIs ECU terminal (2X) voltage OK? (Refer to page F-130)

ResultNo

ACTIONCheck for short circuit in wiring from solenoid valve to ECU

05U0FX-089

CODE NO.34 ISC VALVE

STEP	INSPECTION	Result	ACTION
1	Are there any poor connections in ISC valve circuit?	Yes	Repair or replace connector
1	Are there any poor connections in ISC valve circuit?	No	Go to next step
2	Is resistance of ISC valve OK? Resistance: 12 ± 1Ω	Yes	Go to next step
2	Is resistance of ISC valve OK? Resistance: 12 ± 1Ω	No	Replace ISC valve (Refer to page F-99)
3	Is there battery voltage at terminal-wire (W/R) of ISC valve circuit?	Yes	Go to next step
3	Is there battery voltage at terminal-wire (W/R) of ISC valve circuit?	No	Check for open circuit in wiring from solenoid valve to main relay
4	Is there continuity between ISC valve and ECU? ISC valve B (L/O) — ECU 2W	Yes	Go to next step
4	Is there continuity between ISC valve and ECU? ISC valve B (L/O) — ECU 2W	No	Check for open circuit in wiring from ISC valve to ECU
5	Is ECU terminal 2W voltage OK? (Refer to page F-130)	Yes	Replace ECU (Refer to page F-127)
5	Is ECU terminal 2W voltage OK? (Refer to page F-130)	No	Check for short circuit in wiring from ISC valve to ECU

INSPECTIONAre there any poor connections in ISC valve circuit?

ResultYes

ACTIONRepair or replace connector

INSPECTIONAre there any poor connections in ISC valve circuit?

ResultNo

ACTIONGo to next step

INSPECTIONIs resistance of ISC valve OK? Resistance: 12 ± 1Ω

ResultYes

ACTIONGo to next step

INSPECTIONIs resistance of ISC valve OK? Resistance: 12 ± 1Ω

ResultNo

ACTIONReplace ISC valve (Refer to page F-99)

INSPECTIONIs there battery voltage at terminal-wire (W/R) of ISC valve circuit?

ResultYes

ACTIONGo to next step

INSPECTIONIs there battery voltage at terminal-wire (W/R) of ISC valve circuit?

ResultNo

ACTIONCheck for open circuit in wiring from solenoid valve to main relay

INSPECTIONIs there continuity between ISC valve and ECU? ISC valve B (L/O) — ECU 2W

ResultYes

ACTIONGo to next step

INSPECTIONIs there continuity between ISC valve and ECU? ISC valve B (L/O) — ECU 2W

ResultNo

ACTIONCheck for open circuit in wiring from ISC valve to ECU

INSPECTIONIs ECU terminal 2W voltage OK? (Refer to page F-130)

ResultYes

ACTIONReplace ECU (Refer to page F-127)

INSPECTIONIs ECU terminal 2W voltage OK? (Refer to page F-130)

ResultNo

ACTIONCheck for short circuit in wiring from ISC valve to ECU

Circuit Diagram

Solenoid Valve (Purge Control) and ISC Valve Circuit

Components (8)

BatteryIgnition Switch30A FuseMain RelaySolenoid Valve (Purge Control)ISC ValveECUground

Connections (9)

Battery

Battery30A Fuse??

30A Fuse

30A FuseMain RelayW/G

Ignition Switch

Ignition SwitchMain RelayL

Main Relay

Main RelaySolenoid Valve (Purge Control)W/R

Main RelayISC ValveW/R

Main RelaygroundB

Solenoid Valve (Purge Control)

Solenoid Valve (Purge Control)ECU:2XY/R

ISC Valve

ISC ValveECU:2WL/O

ISC ValvegroundB

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SELF-DIAGNOSIS FUNCTION

CODE NO.26 SOLENOID VALVE (PURGE CONTROL)

CODE NO.34 ISC VALVE

Circuit Diagram

Components (8)

Connections (9)

See also

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