Vehicle Speed Signal Circuit Troubleshooting: M/T

Troubleshoot ECM/PCM DTCs first (see GENERAL TROUBLESHOOTING INFORMATION ).
Before testing, inspect the No. 4(10A) and No. 10 (7.5A) fuses in the under-dash fuse/relay box.

Disconnect the 3P connector from the vehicle speed sensor (VSS) (A).

Fig 1: Disconnecting 3-Pin Connector From Vehicle Speed Sensor
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Connect the test harness only to the engine wire harness.
Connect the RED test harness clip (B) to the positive probe of an ohmmeter. Cover the white (C) and green (D) test harness leads with protective tape (E).
Check for continuity between the RED test harness clip and body ground.
Is there continuity?
1. YES - Go to step 5.
2. NO - Repair open in the BLK wire between the VSS and G101.
Connect the WHT test harness clip (B) to the positive probe of a voltmeter, and connect the RED test harness clip (C) to the negative probe.

Fig 2: Connecting WHT Test Harness Clip To Positive Probe Of A Voltmeter
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch ON (II).
Is there battery voltage?
1. YES - Go to step 7.
2. NO - Repair open in the BLK/YEL wire between the VSS and the under-dash fuse/relay box.
Disconnect the WHT test harness clip (B).
Connect the GRN test harness clip (D) to the positive probe of a voltmeter.

Fig 3: Connecting GRN Test Harness Clip To Positive Probe Of A Voltmeter
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there 5 V or battery voltage?
1. YES - Go to step 9.
2. NO - Repair short or open in the BLU/WHT [WHT/ GRN] wire between the VSS, the gauge assembly, the cruise control, and the ECM.
Turn the ignition switch OFF.
Connect the other test harness connector (A) to the VSS(B).

Fig 4: Connecting Other Test Harness Connector To VSS
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Raise the front of the vehicle, and make sure it is securely supported.
Put the vehicle in neutral with the ignition switch ON (II).
Slowly rotate one wheel with the other wheel blocked.
Does the voltage pulse from 0 to about 5 V or battery voltage?
1. YES - Go to step 14.
2. NO - Replace the VSS.
Disconnect the gauge assembly connector A (22P).
Touch the voltmeter positive probe to the gauge assembly A4 terminal, and connect the negative probe to body ground.

Fig 5: Connecting Negative Probe To Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Slowly rotate one wheel with the other wheel blocked.
Does the voltage pulse from 0 to about 5 V or battery voltage?
1. YES - Replace the speedometer assembly.
2. NO - Repair open in the BLU/WHT [WHT/GRN] wire between the VSS and the speedometer.