NO.3 TRANSMITTER ID CODE CANNOT BE REPROGRAMMED


BHE090369000W06

3

Transmitter ID code cannot be reprogrammed

DESCRIPTION

• Malfunction in transmitter battery, transmitter, keyless receive bracket, keyless receive bracket ground screw, or keyless unit circuit. keyless receive circuit.

POSSIBLE CAUSE

• Malfunction in transmitter battery, transmitter, keyless receive bracket, keyless receive bracket ground screw, or keyless unit, or keyless receive.

Diagnostic procedure

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 V1.0 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.