STEP
|
INSPECTION
|
ACTION
|
1
|
INSPECT TRANSMITTER BATTERY INSTALLATION AND TYPE
• Visually inspect the transmitter battery.
• Are the below items correct?
-
– Transmitter battery installation (correct polarity)
-
– Battery type (CR2025)
|
Yes
|
Go to the next step.
|
No
|
Install the transmitter battery properly or replace with the specified transmitter battery (CR2025), then go to Step 13.
|
2
|
INSPECT TRANSMITTER BATTERY TERMINALS FOR RUST AND POOR CONNECTION
• Visually inspect the transmitter.
-
– Is there rust on the transmitter battery terminals (positive or negative)?
-
– Is there poor connection between the terminals and battery?
|
Yes
|
Replace the transmitter battery or repair the transmitter battery terminal, then go to Step 13.
|
No
|
Go to the next step.
|
3
|
INSPECT TRANSMITTER BATTERY
• Inspect the transmitter battery.
• Is the battery voltage normal?
|
Yes
|
Go to the next step.
|
No
|
Replace the transmitter battery, then go to Step 13.
|
4
|
INSPECT KEYLESS RECEIVE BRACKET INSTALLATION
• Is the keyless receive bracket installed securely?
|
Yes
|
Go to the next step.
|
No
|
Install bracket securely, then go back to Step 6 of KEYLESS ENTRY SYSTEM PRELIMINARY inspection.
|
5
|
INSPECT GROUND SCREW INSTALLATION BETWEEN KEYLESS RECEIVE AND KEYLESS RECEIVE BRACKET
• Are the keyless receive and keyless receive bracket connected securely to the ground screw?
|
Yes
|
Go to the next step.
|
No
|
Install the screw securely, then go back to Step 6 of KEYLESS ENTRY SYSTEM PRELIMINARY inspection.
|
6
|
INSPECT IF MALFUNCTION IS IN TRANSMITTER BATTERY OR ELSEWHERE
• Replace with a transmitter battery known to be good.
• Does the keyless entry system operate properly?
|
Yes
|
Replace the transmitter battery, then go to Step 13.
|
No
|
Go to the next step.
|
7
|
INSPECT IF MALFUNCTION IS IN TRANSMITTER OR KEYLESS UNIT
• Reprogram the keyless unit ID code using another known good transmitter.
• Does the keyless entry system operate properly?
|
Yes
|
Replace the transmitter and reprogram the transmitter ID code, then go to Step 13.
|
No
|
Go to the next step.
|
8
|
INSPECT POWER SUPPLY FUSE
• Is the keyless receiver power supply fuse normal?
|
Yes
|
Go to the next step.
|
No
|
Inspect for a short to ground in circuit of blown fuse. Repair or replace if necessary.
Install an appropriate amperage fuse, then go to Step 13.
|
9
|
INSPECT IF MALFUNCTION IS IN WIRING HARNESS (NO CONTINUITY BETWEEN FUSE BLOCK AND KEYLESS RECEIVER) OR ELSEWHERE
• Measure the voltage at the following keyless receiver terminal:
-
– Power supply signal (terminal 1A)
• Is the voltage B+?
|
Yes
|
Go to the next step.
|
No
|
Repair the wiring harness between the fuse block and keyless receiver, then go to Step 13.
|
10
|
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?
|
Yes
|
Go to the next step.
|
No
|
Repair the wiring harness between the keyless receiver and ground, then go to Step 13.
|
11
|
INSPECT IF MALFUNCTION IS IN WIRING HARNESS (NO CONTINUITY BETWEEN KEYLESS RECEIVER AND KEYLESS UNIT) OR ELSEWHERE
• Disconnect the keyless receiver connector and keyless unit.
• Is there continuity between the following terminals?
-
– Terminal 1B-terminal 2N
-
– Terminal 1C-terminal 2P
|
Yes
|
Go to the next step.
|
No
|
Repair the wiring harness between the keyless receiver and keyless unit, then go to Step 13.
|
12
|
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
-
• Key is in steering lock (key reminder switch on): 5 V
• Is the voltage normal?
|
Yes
|
Replace the keyless unit, then go to the next step.
|
No
|
Replace the keyless receiver, then go to the next step.
|
13
|
REINSPECT MALFUNCTION SYMPTOM AFTER REPAIR
• Does the keyless entry system operate properly?
|
Yes
|
Troubleshooting completed.
Explain repairs to the customer.
|
No
|
Reinspect the malfunction symptoms, then repeat from Step 1 if the malfunction recurs.
|