87150-ZW8-640 LABEL, SPECIFICATION (Honda Code 6643654). Honda
BF8D1 LHA, BF8D1 LHSA, BF8D1 LRA, BF8D1 SA, BF8D1 SHA, BF8D1 SHSA, BF8D1 SRA, BF8D2 LHA, BF8D2 LHSA, BF8D2 LRA, BF8D2 SA, BF8D2 SHA, BF8D2 SHSA, BF8D2 SRA, BF8D3 LHA, BF8D3 LHSA, BF8D3 LRA, BF8D3 SA, BF8D3 SHA, BF8D3 SHSA, BF8D3 SRA, BF8D4 LHA, BF8D4
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BF8D1 LHA
BF8D1 LHSA
BF8D1 LRA
BF8D1 SA
BF8D1 SHA
BF8D1 SHSA
BF8D1 SRA
BF8D2 LHA
BF8D2 LHSA
BF8D2 LRA
BF8D2 SA
BF8D2 SHA
BF8D2 SHSA
BF8D2 SRA
BF8D3 LHA
BF8D3 LHSA
BF8D3 LRA
BF8D3 SA
BF8D3 SHA
BF8D3 SHSA
BF8D3 SRA
BF8D4 LHA
BF8D4 LHSA
BF8D4 SHA
BF8D4 SHSA
BFP8D1 LHA
BFP8D1 LHSA
BFP8D1 LRA
BFP8D1 XHA
BFP8D1 XHSA
BFP8D1 XRA
BFP8D2 LHA
BFP8D2 LHSA
BFP8D2 LRA
BFP8D2 XHA
BFP8D2 XHSA
BFP8D2 XRA
BFP8D3 LHA
BFP8D3 LHSA
BFP8D3 LRA
BFP8D3 XHA
BFP8D3 XHSA
BFP8D3 XRA
BFP8D4 LHA
BFP8D4 XHA
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Information:
Table 1
J1939 Code and Description CDL Code and Description Comments
28-3
Accelerator Pedal Position 3 : Voltage Above Normal 774-3
Secondary Throttle Position Sensor : Voltage Above Normal The Electronic Control Module (ECM) detects signal voltage that is not in the acceptable range.
The ECM flags the throttle position as invalid data and a default value is used. The engine speed is limited to high idle.
The code is logged.
28-4
Accelerator Pedal Position 3 : Voltage Below Normal 774-4
Secondary Throttle Position Sensor : Voltage Below Normal The ECM detects signal voltage that is not in the acceptable range.
The ECM flags the throttle position as invalid data and a default value is used. The engine speed is limited to high idle.
The code is logged.
29-3
Accelerator Pedal Position 2 : Voltage Above Normal 774-3
Secondary Throttle Position Sensor : Voltage Above Normal The ECM detects signal voltage that is not in the acceptable range.
The ECM flags the throttle position as invalid data and a default value is used. The engine speed is limited to high idle.
The code is logged.
29-4
Accelerator Pedal Position 2 : Voltage Below Normal 774-4
Secondary Throttle Position Sensor : Voltage Below Normal The ECM detects signal voltage that is not in the acceptable range.
The ECM flags the throttle position as invalid data and a default value is used. The engine speed is limited to high idle.
The code is logged.
29-8
Accelerator Pedal Position 2 : Abnormal Frequency, Pulse Width, or Period 774-8
Secondary Throttle Position Sensor : Abnormal Frequency, Pulse Width, or Period The Pulse Width Modulated (PWM) signal from the sensor to the ECM is not correct.
The code is logged.
91-3
Accelerator Pedal Position 1 : Voltage Above Normal 91-3
Throttle Position Sensor : Voltage Above Normal The ECM detects signal voltage that is not in the acceptable range.
The ECM flags the throttle position as invalid data and a default value is used. The engine speed is limited to high idle.
The code is logged.
91-4
Accelerator Pedal Position 1 : Voltage Below Normal 91-4
Throttle Position Sensor : Voltage Below Normal The ECM detects signal voltage that is not in the acceptable range.
The ECM flags the throttle position as invalid data and a default value is used. The engine speed is limited to high idle.
The code is logged.
91-8
Accelerator Pedal Position 1 : Abnormal Frequency, Pulse Width, or Period 91-8
Throttle Position Sensor : Abnormal Frequency, Pulse Width, or Period The PWM signal from the sensor to the ECM is not correct.
The code is logged.
974-5
Remote Accelerator Pedal Position : Current Below Normal 1923-5
Remote Throttle Position Sensor : Current Below Normal The ECM detects signal voltage that is not in the acceptable range.
The ECM flags the throttle position as invalid data and a default value is used. The engine speed is limited to high idle.
The code is logged.
974-6
Remote Accelerator Pedal Position : Current Above Normal 1923-6
Remote Throttle Position Sensor : Current Above Normal The ECM detects signal voltage that is not in the acceptable range.
The ECM flags the throttle position as invalid data and a default value is used. The engine speed is limited to high idle.
The code is logged. Note: Performing steps within this procedure requires the use of a multimeter capable of measuring a PWM duty cycle and frequency. Refer to Table 2 for the tools recommended for the procedure.
Table 2
Recommended Tools
146-4080 Digital Multimeter Gp
7X-1710 Multimeter Probe
326-4904 Adapter Cable As
Table 3
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector.
B. Determine if a code is active or logged.
Codes
Result: A 28-3, 974-5, or 1923-5 code is active or logged.
Proceed to Test Step 4.
Result: A 28-4, 974-6, or 1923-6 code is active or logged.
Proceed to Test Step 5.
Result: A 29 or 91 code is active or logged.
Proceed to Test Step 2.
2. Check the Signal Frequency and the Duty Cycle at the Sensor
A. Remove electrical power from the engine.
B. Remove the wire from terminal location C (Throttle position) on the wiring harness side of the connector for the throttle position sensor.
C. Install a 326-4904 Adapter Cable As (3-PIN BREAKOUT) at the connector for the throttle position sensor.
D. Connect the connector for the throttle position sensor.
E. Apply electrical power to the engine.
F. Measure the frequency and the duty cycle at the 326-4904 Adapter Cable As (3-PIN BREAKOUT) between the following terminals:
- B (Digital return) and C (Throttle position)
G. Operate the throttle pedal while making the measurements.
H. Remove electrical power from the engine.
J. Remove the breakout harness.
K. Restore the wiring harness connector to the original configuration.
Frequency
Duty cycle
Result: The ECM detects an incorrect frequency on the throttle signal or an incorrect duty cycle on the throttle signal. The frequency is below 150 Hz or the frequency is above 1000 Hz. The duty cycle is less than 5 percent or the duty cycle is greater than 95 percent.
Proceed to Test Step 3.
Result: The frequency and the duty cycle are within specifications for the entire range of the pedal.
Repair: Repair or replace the wiring harness.
If the problem is not resolved, proceed to Test Step 3.
3. Check the Supply Voltage to the Sensor
A. Remove electrical power from the engine.
B. Disconnect the wiring harness connector for the throttle position sensor.
C. Measure the voltage across the following wiring harness connector terminals:
- Terminal A (8 V supply) and Terminal B (Digital return)
7.5 VDC
Result: The supply voltage is above 7.5 VDC at the sensor connector.
Repair: The wiring is OK. Replace the sensor.
Verify that the repair eliminated the problem.
Result: The supply voltage is not above 7.5 VDC at the sensor connector.
The supply voltage is not reaching the speed control.
Repair: Repair or replace the wiring harness.
Verify that the repair eliminated the problem.
4. Create a Short at the Throttle Connector
A. Remove electrical power from the engine.
B. Install a jumper wire between the appropriate signal and return wire at the sensor connector to create a short.
- Signal terminal and Return terminal
C. Connect Cat ET.
D. Use Cat ET to monitor the following codes:
- -4 code
E. Remove electrical power from the engine.
Create a Short
Result: A -4 or -6 code becomes active.
Repair: The wiring is OK. Replace the failed throttle.
Verify that the repair eliminated the
Parts label Honda:
87535-ZV5-620
87535-ZV5-620 LABEL, STORING CAUTION (Honda Code 3705480). (ENGLISH)
BF15A1 LA, BF15A1 LAS, BF15A1 SA, BF15A1 SAS, BF15A1 XAS, BF15A2 LA, BF15A2 LAS, BF15A2 SA, BF15A2 SAS, BF15A2 XAS, BF15AM LA, BF15AM LAS, BF15AM SA, BF15AM SAS, BF15AM XAS, BF15AW LA, BF15AW LAS, BF15AW SA, BF15AW SAS, BF15AW XAS, BF15AX LA, BF15AX
87531-ZW9-640
87531-ZW9-640 LABEL, OIL CAUTION (ENGLISH) (Honda Code 6643688).
BF15D3 LGA, BF15D3 LHA, BF15D3 LHGA, BF15D3 LHSA, BF15D3 LHTA, BF15D3 LRA, BF15D3 LRTA, BF15D3 SHA, BF15D3 SHGA, BF15D3 SHSA, BF15D3 SHTA, BF15D3 SRTA, BF15D3 XHA, BF15D3 XHGA, BF15D4 LGA, BF15D4 LHA, BF15D4 LHGA, BF15D4 LHSA, BF15D4 LHTA, BF15D4 LRA