Test Harness 07LAJ-PT3020A
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).
- Connect the test harness only to the engine wire harness.
- Connect the RED test harness clip (B) to the positive prove of an ohmmeter. Cover the white (C) and green (D) test harness with protective tape (E).
- Check for continuity between the RED test harness clip and body ground.
Is there continuity?
YES – Go to step 5.
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.
- Turn the ignition switch ON (II).
Is there battery voltage?
YES – Go to step 7.
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.
Is there 5 V or more?
YES – Go to step 9.
NO – Repair short in the BLU/WHT wire between the VSS and the cruise control unit, or the ECM/PCM.
