DTC P1676 - '99-00 Models: FPTDR Signal Line Failure

Reset the PCM (see HOW TO RESET THE PCM ).
Start the engine, and wait 10 seconds.
Is DTC P1676 indicated?
1. YES: Go to step 3.
2. NO: Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the ABS/TCS control unit and the PCM.
Turn the ignition switch OFF.
Disconnect PCM connector E (12P) and the ABS/TCS control unit 16P connector.
Check for continuity between body ground and PCM connector terminal E1.

Fig 1: Checking For Continuity Between Body Ground & PCM Connector Terminal E1
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?
1. YES: Repair short in the wire between the ABS/TCS control unit and the PCM (E1).
2. NO: Go to step 6.
Check for continuity between ABS/TCS control unit 16P connector terminal No. 1 and PCM connector terminal E1.

Fig 2: Checking For Continuity Between ABS/TCS Control Unit 16P Connector Terminal No. 1 & PCM Connector Terminal E1
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?
1. YES: Go to step 7.
2. NO: Repair open in the wire between the ABS/TCS control unit and the PCM (E1).
Reconnect PCM connector E (12P).
Connect PCM connector terminals E1 and C28 with a jumper wire.

Fig 3: Connecting PCM Connector Terminals E1 & C28 With A Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Reset the PCM (see HOW TO RESET THE PCM ).
Start the engine, and wait 60 seconds.
Is DTC P 1676 indicated?
1. YES: Substitute a known-good ABS/TCS control unit and recheck. If the symptom/indication goes away, replace the original ABS/TCS control unit.
2. NO: Substitute a known-good PCM and recheck (see HOW TO SUBSTITUTE THE PCM FOR TESTING PURPOSE ). If the symptom/indication goes away, replace the original PCM.