INSPECTION
| INSPECTION |
| SYMPTOM CHART |
| Symptom | Repair order | Reference | |||||||
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None of the functions of the keyless entry system operate.
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1.
Check the keyless transmitter battery and function.
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2.
Check the fuse.
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3.
Check the keyless entry control unit power supply and ground circuit.
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4.
Replace the keyless entry control unit.
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The keyless transmitter cannot be registered.
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1.
Check the keyless transmitter battery and function.
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2.
Check the ignition switch circuit.
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3.
Check the door switch.
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4.
Replace the keyless entry control unit.
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The door lock or unlock does not operate.
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1.
Check the keyless transmitter battery and function.
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2.
Check the key warning switch.
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3.
Check the door switch.
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4.
Check the output signal to body integrated unit.
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5.
Replace the keyless entry control unit.
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The panic alarm does not operate.
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1.
Check the keyless transmitter battery and function.
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2.
Check the horn operation.
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3.
Replace the keyless entry control unit.
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The buzzer chirp and hazard light do not operate.
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1.
Check the buzzer chirp function.
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2. Check the buzzer and hazard light operation.
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Buzzer
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Hazard light
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3.
Replace the keyless entry control unit.
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The room light operation do not activate.
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1.
Check the room light operation.
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2.
Replace the keyless entry control unit.
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The door warning does not operate.
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1.
Check the door switch.
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2.
Check the buzzer operation.
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3.
Replace the keyless entry control unit.
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| CHECK KEYLESS TRANSMITTER BATTERY AND FUNCTION |
CHECK KEYLESS TRANSMITTER BATTERY.
Remove the battery from the keyless transmitter.
Check the battery voltage.
Is the voltage more than 2.5 V?
| Yes |
| No |
Replace the keyless transmitter battery.
CHECK LED OF KEYLESS TRANSMITTER.
Press the LOCK/ARM or UNLOCK/DISARM button six times to synchronize with the keyless entry control unit.Press the LOCK/ARM button.
Does the LED blink one time?
| Yes |
| No |
Replace the keyless transmitter.
CHECK LED OF KEYLESS TRANSMITTER.
Keep the LOCK/ARM button pressed.Does the LED blink one time, and then turn on?
| Yes |
| No |
Replace the keyless transmitter.
CHECK LED OF KEYLESS TRANSMITTER.
Press the UNLOCK/DISARM button.Does the LED blink one time?
| Yes |
| No |
Replace the keyless transmitter.
CHECK LED OF KEYLESS TRANSMITTER.
Keep the UNLOCK/DISARM button pressed.Does the LED blink two times?
| Yes |
Keyless transmitter is OK.
| No |
Replace the keyless transmitter.
| CHECK BUZZER CHIRP SETTING |
CHECK BUZZER CHIRP SETTING.
Check the current setting of the buzzer chirp.Remove the key from the ignition switch.
Close all doors and the rear gate.
Press the LOCK/ARM or UNLOCK/DISARM button.
Does the buzzer signal chirp?
| Yes |
Buzzer chirp function is OK.
| No |
CHECK BUZZER CHIRP SETTING.
Press the UNLOCK/DISARM button once.Press both the LOCK/ARM and UNLOCK/DISARM buttons for more than 2 seconds.
Press the LOCK/ARM or UNLOCK/DISARM button.
Does the buzzer signal chirp?
| Yes |
Buzzer chirp function is OK.
| No |
Check the keyless transmitter function.
| CHECK FUSE |
CHECK FUSE.
Remove and visually check the fuse No. 6 (in the main fuse box) and No. 3 (in the fuse and relay box).Is the fuse blown out?
| Yes |
Replace the fuse with a new one.
| No |
Check the power supply and ground circuit.
| CHECK POWER SUPPLY AND GROUND CIRCUIT |
CHECK POWER SUPPLY.
Disconnect the keyless entry control unit harness connector.Measure the voltage between the harness connector terminal and chassis ground.
Connector & terminal
(B176) No. 14, No. 15 (+) — Chassis ground (−):
Is the voltage more than 10 V?
| Yes |
| No |
Check the harness for open circuits and shorts between the keyless entry control unit and fuse.
CHECK GROUND CIRCUIT.
Measure the resistance between the harness connector terminal and chassis ground.Connector & terminal
(B176) No. 11 — Chassis ground:
Is the resistance less than 10 Ω?
| Yes |
The power supply and ground circuit are OK.
| No |
Repair the harness.
| CHECK IGNITION SWITCH CIRCUIT |
CHECK IGNITION SWITCH SIGNAL.
Disconnect the keyless entry control unit harness connector.Turn the ignition switch to ON.
Measure the voltage between harness connector terminal and chassis ground.
Connector & terminal
(B176) No. 6 (+) — Chassis ground (−):
Is the voltage more than 10 V?
| Yes |
Ignition switch circuit is OK.
| No |
Check the harness for open circuits and shorts between the keyless entry control unit and ignition relay.
| CHECK DOOR SWITCH |
CHECK DOOR SWITCH CIRCUIT.
Measure the voltage between the keyless entry control unit harness connector terminal and chassis ground.Connector & terminal
Front and rear side door:
(B176) No. 10 (+) — Chassis ground (−):Rear gate:
(B176) No. 9 (+) — Chassis ground (−):Is the voltage 0 V when each door or rear gate is opened?
| Yes |
| No |
CHECK DOOR SWITCH CIRCUIT.
Measure the voltage between the keyless entry control unit harness connector terminal and chassis ground.Connector & terminal
Front and rear side door:
(B176) No. 10 (+) — Chassis ground (−):Rear gate:
(B176) No. 9 (+) — Chassis ground (−):Is the voltage more than 10 V when each door or rear gate is closed?
| Yes |
The door switch is OK.
| No |
CHECK DOOR SWITCH.
Disconnect the door switch harness connector.Measure the resistance between the door switch terminals.
Terminals
Door switch No. 1 — No. 3:
Rear gate latch switch No. 1 — No. 2:
Is the resistance more than 1 MΩ when the door switch is depressed?
| Yes |
| No |
Replace the door switch.
CHECK DOOR SWITCH.
Measure the resistance between the door switch terminals.Terminals
Door switch No. 1 — No. 3:
Rear gate latch switch No. 1 — No. 2:
Is the resistance less than 1 Ω when the door switch is released?
| Yes |
Check the harness for open circuits and shorts between the body integrated unit and door switch.
| No |
Replace the door switch.
| CHECK KEY WARNING SWITCH |
CHECK FUSE.
Remove and visually check the fuse No. 6 (in the main fuse box).Is the fuse blown out?
| Yes |
Replace the fuse with a new one.
| No |
CHECK KEY WARNING SWITCH CIRCUIT.
Disconnect the keyless entry control unit harness connector.Insert the key into the ignition switch. (LOCK position)
Measure the voltage between the harness connector terminal and chassis ground.
Connector & terminal
(B176) No. 7 (+) — Chassis ground (−):
Is the voltage more than 10 V?
| Yes |
| No |
CHECK KEY WARNING SWITCH CIRCUIT.
Remove the key from the ignition switch.Measure the voltage between the harness connector terminal and chassis ground.
Connector & terminal
(B176) No. 7 (+) — Chassis ground (−):
Is the voltage 0 V?
| Yes |
Key warning switch is OK.
| No |
CHECK KEY WARNING SWITCH.
Disconnect the key warning switch harness connector.Insert the key into the ignition switch. (LOCK position)
Measure the resistance between the key warning switch terminals.
Terminals
No. 1 — No. 2:
Is the resistance less than 1 Ω?
| Yes |
| No |
Replace the key warning switch.
CHECK KEY WARNING SWITCH.
Remove the key from the ignition switch.Measure the resistance between the key warning switch terminals.
Terminals
No. 1 — No. 2:
Is the resistance more than 1 MΩ?
| Yes |
| • |
Check the following:
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Harness
for open circuits and shorts between the key warning switch and
fuse
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| • |
Harness for open circuits and shorts between the keyless
entry control unit and key warning switch
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| No |
Replace the key warning switch.
| CHECK ROOM LIGHT OPERATION |
CHECK ROOM LIGHT OPERATION.
Make sure the room light illuminates when the room light switch is turned ON.Does the room light illuminate?
| Yes |
| No |
Check the room light circuit.
CHECK HARNESS BETWEEN ROOM LIGHT AND BODY INTEGRATED UNIT.
Disconnect the body integrated unit harness connector and room light harness connector.Measure the resistance between the body integrated unit harness connector terminal and the room light harness connector terminal.
Connector & terminal
(B280) No. 5 — (R52) No. 2:
Is the resistance less than 10 Ω?
| Yes |
The room light operation circuit is OK.
| No |
Check the harness for open circuits and/or shorts between the body integrated unit and room light.
| CHECK OUTPUT SIGNAL TO BODY INTEGRATED UNIT |
CHECK OUTPUT SIGNAL.
Measure the voltage between the keyless entry control unit harness connector terminal and chassis ground when UNLOCK/DISARM button of keyless transmitter is pressed.Connector & terminal
(B176) No. 2 (+) — Chassis ground (−):
Is the voltage more than 10 V?
| Yes |
| No |
Replace the keyless entry control unit.
CHECK OUTPUT SIGNAL.
Measure the voltage between the keyless entry control unit harness connector terminal and chassis ground when LOCK/ARM button of keyless transmitter is pressed.Connector & terminal
(B176) No. 1 (+) — Chassis ground (−):
Is the voltage more than 10 V?
| Yes |
| No |
Replace the keyless entry control unit.
CHECK HARNESS BETWEEN KEYLESS entry CONTROL UNIT AND BODY integrated UNIT.
Disconnect the keyless entry control unit harness connector and body integrated unit harness connector.Measure the resistance between the keyless entry control unit harness connector terminal and body integrated unit harness connector terminal.
Connector & terminal
(B176) No. 2 — (B281) No. 14:
(B176) No. 1 — (B281) No. 13:
Is the resistance less than 10 Ω?
| Yes |
Replace the body integrated unit.
| No |
Check the harness for open circuit or shorts between the keyless entry control unit and body integrated unit.
| CHECK HORN OPERATION |
CHECK HORN OPERATION.
Make sure the horn sounds when the horn switch is pushed.Does the horn sound?
| Yes |
| No |
Check the horn circuit.
CHECK HORN OPERATION.
Disconnect the keyless entry control unit harness connector.Ground the harness connector terminal with a suitable wire.
Connector & terminal
(B176) No. 13 — Chassis ground:
Does the horn sound?
| Yes |
Replace the keyless entry control unit.
| No |
Check the harness for open circuits and/or shorts between the keyless entry control unit and horn relay.
| CHECK HAZARD LIGHT OPERATION |
CHECK HAZARD LIGHT OPERATION.
Make sure the hazard light blinks when hazard switch is turned ON.Does the hazard light blink?
| Yes |
| No |
Check the hazard light circuit.
CHECK OUTPUT SIGNAL.
Remove the key from ignition switch.Close all doors and rear gate.
Measure the voltage between keyless entry control unit harness connector terminal and chassis ground when LOCK/ARM button of keyless transmitter is pressed.
Connector & terminal
(B176) No. 12, 18 (+) — Chassis ground (−):
Is the voltage more than 10 V?
| Yes |
Check the harness for open or short between keyless entry control unit and turn signal lights.
| No |
Replace the keyless entry control unit.
| CHECK KEYLESS BUZZER |
CHECK FUSE.
Remove and check the fuse No. 2 (located in main fuse box).Is the fuse blown out?
| Yes |
Replace the fuse with a new one.
| No |
CHECK KEYLESS POWER SUPPLY.
Disconnect the connector from keyless buzzer.Measure the voltage between keyless buzzer harness connector and chassis ground.
Connector & terminal
(F102) No. 2 (+) — Chassis ground (−):
Is the voltage more than 10 V?
| Yes |
| No |
Check the harness for open or short between fuse and keyless buzzer.
CHECK HARNESS BETWEEN KEYLESS BUZZER AND KEYLESS ENTRY CONTROL UNIT.
Disconnect the connector from keyless entry control unit.Measure the resistance between keyless buzzer and keyless entry control unit.
Connector & terminal
(F102) No. 1 — (B176) No. 16:
Is the resistance more than 10 Ω?
| Yes |
| No |
Repair the harness between keyless buzzer and keyless entry control unit.
CHECK KEYLESS BUZZER.
Make sure that the buzzer sounds when connecting battery positive terminal to No. 2 terminal of keyless buzzer connector and battery ground terminal to No. 1 terminal of keyless buzzer connector.Does the buzzer sound?
| Yes |
Replace the keyless entry control unit.
| No |
Replace the keyless buzzer.
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