Inspection Procedure

CHECK OPERATION OF STOP LIGHT
1. Check if the stop lights go on and off normally when the brake pedal is depressed and released.
1. NG : REPAIR OR REPLACE STOP LAMP SWITCH CIRCUIT
2. OK : Go to next step.

READ VALUE OF HAND-HELD TESTER OR OBD II SCAN TOOL (STP SIGNAL)

Turn the ignition switch ON.

Select the item "DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / STOP LIGHT SW" and read its value displayed on the hand-held tester or OBD II scan tool.

Standard:

STANDARD

Brake Pedal	Specified Condition
Depressed	STP Signal ON
Released	STP Signal OFF

Fig 1: Pressing Brake Pedal

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OK : CHECK FOR INTERMITTENT PROBLEMS (See CHECK FOR INTERMITTENT PROBLEMS )
NG : Go to next step.

INSPECT STOP LAMP SWITCH ASSY

Fig 2: Inspecting Stop Lamp Switch Assy

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Measure the resistance between terminals when the switch is ON and OFF.

Standard:

STANDARD

Switch Position	Tester Connection	Specified Condition
ON (Free)	1 - 2	Below 1 Ω
OFF (Pushed In)	1 - 2	10 kΩ Or Higher

NG : REPLACE STOP LAMP SWITCH ASSY
OK : Go to next step.

CHECK HARNESS AND CONNECTOR (STOP LAMP SWITCH - ECM)

Fig 3: Checking Harness (Stop Lamp Switch - ECM)

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Disconnect the S6 stop lamp switch connector.
Disconnect the E5 ECM connector.

Measure the resistance between the wire harness side connectors.

Standard (Check for open):

STANDARD (CHECK FOR OPEN)

Tester Connection	Specified Condition
Stop Lamp Switch (S6-1) - STP (E5-19)	Below 1 Ω

Standard (Check for short):

STANDARD (CHECK FOR SHORT)

Tester Connection	Specified Condition
Stop Lamp Switch (S6-1) Or STP (E5-19) - Body Ground	10 kΩ Or Higher

Reconnect the stop lamp switch connector.

Fig 4: Checking Connector (Stop Lamp Switch - ECM)

Reconnect the ECM connector.

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR
OK : REPLACE ECM (See REPLACEMENT )