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Diagnosis Procedure
1.CHECK STARTER CUT RELAY INPUT SIGNAL
Check voltage between BCM harness connector and ground.
(+)(-)ConditionVoltage
(Approx.)
BCM
ConnectorTerminal
E29123GroundOther than following9 - 16 V
At engine cranking0 V
Is the inspection result normal?
.
.
 
2.CHECK STARTER CUT RELAY INPUT SIGNAL CIRCUIT
  1. Turn the power supply mode of the electric motor switch to OFF.
  2. Disconnect BCM connector and starter cut relay connector.
  3. Check continuity between BCM harness connector and starter cut relay harness connector.
    BCMStarter cut relayContinuity
    ConnectorTerminalConnectorTerminal
    E29123F559Existed
  4. Check continuity between BCM harness connector and ground.
    BCM—Continuity
    ConnectorTerminal
    E29123GroundNot existed
Is the inspection result normal?
.
Repair or replace harness.
 
3.CHECK FUSIBLE LINK
Check that the following fusible link is not blown (open).
Signal nameFusible link
Battery power supplyW (30 A)
Is the fusible link blown (open)?
Replace the blown (open) fusible link after repairing the affected circuit if a fusible link is blown (open).
.
 
4.CHECK STARTER CUT RELAY OUTPUT SIGNAL
Check voltage between IPDM E/R harness connector and ground.
(+)(-)ConditionVoltage
(Approx.)
IPDM E/R
ConnectorTerminal
F4186GroundOther than at engine crankingLess than 4 V (IPDM E/R always outputs the voltage to detect the ON/ OFF state of starter cut relay)
At engine cranking6 - 16 V
Is the inspection result normal?
INSPECTION END
.
 
5.CHECK STARTER CUT RELAY OUTPUT SIGNAL CIRCUIT
  1. Turn the power supply mode of the electric motor switch to OFF.
  2. Disconnect IPDM E/R connector and starter cut relay connector.
  3. Check continuity between IPDM E/R harness connector and starter cut relay harness connector.
    IPDM E/RStarter cut relayContinuity
    ConnectorTerminalConnectorTerminal
    F4186F557Existed
  4. Check continuity between IPDM E/R harness connector and ground.
    IPDM E/R—Continuity
    ConnectorTerminal
    F4186GroundNot existed
Is the inspection result normal?
.
Repair or replace harness.
 
6.CHECK STARTER CUT RELAY
Check starter cut relay. Refer to Component Inspection.
Is the inspection result normal?
INSPECTION END
Replace starter cut relay.