1997 Dodge Caravan ABS Light on

TEST 15A: SYSTEM OVERVOLTAGE 1. If a battery charger is not connected to vehicle, go to next step. If a battery charger is connected to vehicle, charge battery to proper level. Disconnect charger. Using scan tool, clear DTCs. Perform TEST VER-1A: VERIFICATION TEST . 2. Start engine. Raise engine speed to more than 1800 RPM and hold. Using a voltmeter, check battery voltage. If battery voltage is 15.5 volts or less, go to next step. If battery voltage is more than 15.5 volts, repair charging system as necessary. Perform TEST VER-1A: VERIFICATION TEST . 3. Using scan tool, select SENSORS. Read ignition voltage. If scan tool displays 16 volts or less, go to next step. If scan tool displays more than 16 volts, replace CAB. Perform TEST VER- 1A: VERIFICATION TEST . 4. Conditions required to set DTC are not present at this time. SYSTEM OVERVOLTAGE DTC sets if voltage is more than 19 volts at CAB terminal No. 23 (White/Pink wire). Possible cause is: charging system output too high. Perform TEST VER-1A: VERIFICATION TEST . NOTE: Perform TEST 1A: CHECKING SYSTEM FOR FAULTS before proceeding.

What does the CAB look like and where is the CAB located?

Sorry I cant find a diagram of it, but it's on the right side of the engine bay, follow wheel speed sensor wire from right front wheel, takes you right to it!

Have attached a picture of what I think is the CAB off the right side of the engine bay. Please confirm. My check of the alternator output at 2000 RPM is 15.45 volts and does not go above that. However, the DTS plug in my Caravan does not look like your diagram. It only has 16 pin bays and of the 16, only 8 are used. Correction, the alternator voltage is 14.45 volts, not 15.45.

I think you found the TCM, Transmission control module... Cab is on the right side too!

When you find it match up the wires to this...