STEP
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INSPECTION
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ACTION
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1
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INSPECT KEYLESS UNIT POWER SUPPLY FUSES
• Are the keyless unit power supply fuses normal?
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Yes
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Go to the next step.
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No
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Inspect for a short to ground in circuit of blown fuse. Repair or replace if necessary.
Install an appropriate amperage fuse.
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2
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INSPECT DOOR SWITCH INSTALLATION
• Are the door switches installed securely?
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Yes
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Go to the next step.
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No
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Install the door switches securely, then go back to Step 5 of KEYLESS ENTRY SYSTEM PRELIMINARY INSPECTION.
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*3
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INSPECT IF MALFUNCTION IS IN WIRING HARNESS (NO CONTINUITY BETWEEN FUSE BLOCK AND KEYLESS UNIT) OR ELSEWHERE
• Turn the ignition switch to the ON position.
• Measure the voltage at the following keyless unit terminals:
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– IG1 signal (terminal 2B)
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– B+ signal (terminal 2A)
• Is the voltage B+?
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Yes
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Go to the next step.
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No
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Repair the wiring harness between the fuse block and keyless unit, then go to Step 13.
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*4
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INSPECT IF MALFUNCTION IS IN WIRING HARNESS (SHORT TO B+ BETWEEN FUSE BLOCK AND KEYLESS UNIT, OR BETWEEN KEYLESS UNIT AND GROUND) OR ELSEWHERE
• Turn the ignition switch to the LOCK position.
• Disconnect the keyless unit connector.
• Measure the voltage at the following keyless unit connector terminal:
-
– IG1 signal (terminal 2B)
• Is the voltage B+?
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Yes
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Repair the malfunctioning wiring harness, then go to Step 13.
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No
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Go to the next step.
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*5
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INSPECT IF MALFUNCTION IS IN WIRING HARNESS (NO CONTINUITY BETWEEN KEYLESS UNIT AND GROUND) OR ELSEWHERE
• Is there continuity between keyless unit connector terminal 2W and ground?
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Yes
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Go to the next step.
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No
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Repair the wiring harness between the keyless unit and ground, then go to Step 13.
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6
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INSPECT FOR CHECK CODE 04 IN INSTRUMENT CLUSTER
• Inspect the door switch using the instrument cluster input/output check mode.
• Is DTC 04 displayed?
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Yes
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Go to the next step.
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No
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Repair the door switch system using the DTC 04 inspection procedure, then go to Step 13.
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7
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INSPECT KEYLESS UNIT OR WIRING HARNESS (BETWEEN KEYLESS UNIT AND DOOR SWITCHES, TRUNK LID COMPARTMENT LIGHT SWITCH FOR CONTINUITY)
• Open the driver-side door.
• Is there continuity between keyless unit connector terminal 2K, 2G and ground?
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Yes
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Replace the keyless unit and reprogram the keyless unit ID code, then go to the next step.
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No
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Repair the wiring harness between the keyless unit, door switches, and trunk lid compartment light switch, then go to the next step.
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8
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INSPECT POWER SUPPLY FUSE
• Is the keyless receiver power supply fuse normal?
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Yes
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Go to the next step.
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No
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Inspect for a short to ground in circuit of blown fuse. Repair or replace if necessary.
Install an appropriate amperage fuse.
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9
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INSPECT IF MALFUNCTION IS IN WIRING HARNESS (NO CONTINUITY BETWEEN FUSE BLOCK AND KEYLESS RECEIVER) OR ELSEWHERE
• Turn the ignition switch to the ON position.
• Measure the voltage at the following keyless receiver terminal:
-
– IG1 signal (terminal 1A)
• Is the voltage B+?
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Yes
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Go to the next step.
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No
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Repair the wiring harness between the fuse block and keyless receiver, then go to Step 13.
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10
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INSPECT IF MALFUNCTION IS IN WIRING HARNESS (NO CONTINUITY BETWEEN KEYLESS RECEIVER AND GROUND) OR ELSEWHERE
• Is there continuity between keyless receiver connector terminal 1E and ground?
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Yes
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Go to the next step.
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No
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Repair the wiring harness between the keyless receiver and ground, then go to Step 13.
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11
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INSPECT IF MALFUNCTION IS IN WIRING HARNESS (NO CONTINUITY BETWEEN KEYLESS RECEIVER AND KEYLESS UNIT) OR ELSEWHERE
• Turn the ignition switch to the ON position.
• Disconnect the keyless receiver connector and keyless unit.
• Is there continuity between the following terminals?
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– Terminal 1B-terminal 2N
-
– Terminal 1C-terminal 2P
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Yes
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Go to the next step.
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No
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Repair the wiring harness between the keyless receiver and keyless unit, then go to Step 13.
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12
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INSPECT IF MALFUNCTION IS IN WIRING HARNESS (NO CONTINUITY BETWEEN KEYLESS RECEIVER AND KEYLESS UNIT) OR KEYLESS UNIT
• Measure the voltage at keyless unit terminal 2N.
-
– When transmitter operated:
-
• Any transmitter button is operated without key in steering lock (key reminder switch off): 5 V→1.0 V or less
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• Key is in steering lock (key reminder switch on):5 V
• Is the voltage normal?
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Yes
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Replace the keyless unit, then go to the next step.
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No
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Replace the keyless receiver, then go to the next step.
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13
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REINSPECT MALFUNCTION SYMPTOM AFTER REPAIR
• Does the keyless entry system operate properly?
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Yes
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Troubleshooting completed.
Explain repairs to the customer.
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No
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Reinspect the malfunction symptoms, then repeat from Step 1 if the malfunction recurs.
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