Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ECM (+B VOLTAGE)

Turn the ignition switch ON.

Measure the voltage between of the ECM connectors.

Voltage

TESTER CONNECTION SPECIFIED CONDITION

Tester connection	Specified Condition
E4-1 (+B) - E8-3 (E1)	9 to 14 V

Fig 1: Checking ECM (+B Voltage)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE

NG: GO TO NEXT STEP

CHECK WIRE HARNESS (ECM - BODY GROUND)

Disconnect the E8 ECM connector.

Fig 2: Disconnecting E8 ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance of the wire harness side connectors.

Resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester connection	Specified Condition
E8-3 (E1) - Body ground	Below 1

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: GO TO NEXT STEP

CHECK ECM (IGSW VOLTAGE)

Turn the ignition switch ON.

Measure the voltage of the E4 and E8 ECM connectors.

Voltage

TESTER CONNECTION SPECIFIED CONDITION

Tester connection	Specified Condition
E4-9 (IGSW) - E8-3 (E1)	9 to 14 V

Fig 3: Measuring Voltage Of E4 And E8 ECM Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to step 6

NG: GO TO NEXT STEP

INSPECT IGN FUSE
1. Remove the IGN fuse from the engine room J/B.
2. Measure the resistance of the IGN fuse.
  Resistance: Below 1
NG: REPLACE IGN FUSE

OK: GO TO NEXT STEP

INSPECT IGNITION OR STARTER SWITCH ASSEMBLY

Measure the resistance of the ignition switch terminals.

Resistance

TESTER CONDITION SPECIFIED CONDITION CHART

Tester Condition	Switch Condition	Specified Condition
6 (IG2) - 7 (AM2)	LOCK	10 k or higher
6 (IG2) - 7 (AM2)	ON	Below 1

Fig 5: Identifying Ignition Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE IGNITION OR STARTER SWITCH ASSEMBLY

OK: CHECK AND REPAIR HARNESS AND CONNECTOR (BATTERY - IGNITION SWITCH, IGNITION SWITCH - ECM)

CHECK ECM (MREL VOLTAGE)

Turn the ignition switch ON.

Measure the voltage of the ECM connectors.

Voltage

TESTER CONNECTION SPECIFIED CONDITION

Tester connection	Specified Condition
E4-8 (MREL) - E8-3 (E1)	9 to 14 V

Fig 6: Checking ECM (MREL Voltage)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE ECM

OK: GO TO NEXT STEP

INSPECT EFI FUSE
1. Remove the EFI fuse from the engine room J/B.
2. Measure the resistance of the EFI fuse.
  Resistance: Below 1
NG: INSPECT EFI FUSE

OK: GO TO NEXT STEP

INSPECT EFI RELAY

Remove the EFI relay from the engine room J/B.

Measure the resistance of the EFI relay.

Resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester connection	Specified Condition
3 - 5	10 k or higher
3 - 5	Below 1 (when battery voltage is applied to terminals 1 and 2)

Fig 8: Identifying Relay Test Terminals

NG: REPLACE EFI RELAY

OK: GO TO NEXT STEP

CHECK WIRE HARNESS (EFI RELAY - ECM, EFI RELAY - BODY GROUND)

Check the wire harness between the EFI relay and ECM.

Remove the EFI relay from the engine room J/B.
Disconnect the E4 ECM connector.

Measure the resistance of the wire harness side connectors.

Resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester connection	Specified Condition
J/B EFI relay terminal 1 - E4-8 (MREL)	Below 1
J/B EFI relay terminal 1 or E4-8 (MREL) - Body ground	10 k or higher

Fig 9: Checking Wire Harness (EFI Relay - ECM, EFI Relay - Body Ground)

Check the wire harness between the EFI relay and body ground.

Remove the EFI relay from the engine room J/B.

Measure the resistance of the wire harness side connector.

Resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester connection	Specified Condition
J/B EFI relay terminal 2 - Body ground	Below 1

OK: REPAIR OR REPLACE HARNESS AND CONNECTOR

NG: CHECK AND REPAIR HARNESS AND CONNECTOR (TERMINAL +B OF ECM - BATTERY POSITIVE TERMINAL)